{"title":"TLS Flasks","description":"\u003cdiv class=\"collection-description\"\u003e\n\u003cdiv class=\"category-intro\"\u003e\n\u003cp\u003eLaboratory flasks are vessels with narrow necks and wider bodies, each designed for a specific function — mixing, heating, measuring, filtering, distilling, or containing reactions. From the Erlenmeyer flasks used in every titration to the precision volumetric flasks that define exact concentrations, flasks are central to chemistry, biology, and research at every level. The Lab Stockroom carries laboratory flasks in borosilicate glass and lab-grade plastic, spanning every type from general-purpose to specialty analytical designs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/FAQPage\" itemscope=\"\" class=\"category-faq\"\u003e\n\u003c!-- Q1 --\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Question\" itemprop=\"mainEntity\" itemscope=\"\" class=\"faq-item\"\u003e\n\u003ch3 itemprop=\"name\"\u003eWhat are laboratory flasks?\u003c\/h3\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Answer\" itemprop=\"acceptedAnswer\" itemscope=\"\"\u003e\n\u003cdiv itemprop=\"text\"\u003e\n\u003cp\u003eLaboratory flasks are vessels with a narrow neck and wider body, designed for mixing, heating, measuring, storing, and containing chemical reactions. Unlike beakers (which have a wide open top), flasks use their narrow neck to reduce evaporation, control splashing, and allow stoppering or connection to other apparatus. Common types include Erlenmeyer flasks, boiling flasks, volumetric flasks, filtering flasks, and distillation flasks.\u003c\/p\u003e\n\u003cp\u003eFlasks are available in borosilicate glass for heating and chemical resistance, and in polypropylene or polymethylpentene plastic for shatter resistance and fieldwork. The type of flask you need depends on the procedure — each design is optimized for a specific function.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Q2 --\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Question\" itemprop=\"mainEntity\" itemscope=\"\" class=\"faq-item\"\u003e\n\u003ch3 itemprop=\"name\"\u003eWhat are the different types of laboratory flasks?\u003c\/h3\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Answer\" itemprop=\"acceptedAnswer\" itemscope=\"\"\u003e\n\u003cdiv itemprop=\"text\"\u003e\n\u003cp\u003eLaboratory flasks include \u003cstrong\u003eErlenmeyer flasks\u003c\/strong\u003e (conical shape for mixing and titration), \u003cstrong\u003eboiling flasks\u003c\/strong\u003e (round bottom for uniform heating and distillation), \u003cstrong\u003evolumetric flasks\u003c\/strong\u003e (precision calibrated for preparing exact solution concentrations), \u003cstrong\u003efiltering flasks\u003c\/strong\u003e (thick-walled with a side arm for vacuum filtration), \u003cstrong\u003edistillation flasks\u003c\/strong\u003e (with a side arm for directing vapors to a condenser), \u003cstrong\u003eKjeldahl flasks\u003c\/strong\u003e (long-necked for nitrogen determination), \u003cstrong\u003eevaporating flasks\u003c\/strong\u003e (for rotary evaporation), and \u003cstrong\u003eiodine flasks\u003c\/strong\u003e (with a liquid-seal stopper for iodometric titrations).\u003c\/p\u003e\n\u003cp\u003eErlenmeyer and volumetric flasks are available in both glass and plastic. Boiling, distillation, Kjeldahl, evaporating, and iodine flasks are glass only due to their heating and chemical requirements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Q3 --\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Question\" itemprop=\"mainEntity\" itemscope=\"\" class=\"faq-item\"\u003e\n\u003ch3 itemprop=\"name\"\u003eWhat is the difference between an Erlenmeyer flask and a boiling flask?\u003c\/h3\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Answer\" itemprop=\"acceptedAnswer\" itemscope=\"\"\u003e\n\u003cdiv itemprop=\"text\"\u003e\n\u003cp\u003eAn Erlenmeyer flask has a flat bottom, conical body, and narrow neck — designed for mixing, swirling, and titration. It can sit on a bench or hot plate without support. A boiling flask has a round or spherical bottom designed for uniform heat distribution during distillation and reflux. Round-bottom boiling flasks require a clamp, heating mantle, or ring for support since they cannot stand on their own.\u003c\/p\u003e\n\u003cp\u003eUse Erlenmeyer flasks for mixing and reactions at the bench. Use boiling flasks when uniform heating is critical, particularly in distillation and reflux setups. Florence flasks (flat-bottom boiling flasks) offer a middle ground — they can stand independently while still providing better heat distribution than an Erlenmeyer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Q4 --\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Question\" itemprop=\"mainEntity\" itemscope=\"\" class=\"faq-item\"\u003e\n\u003ch3 itemprop=\"name\"\u003eWhen should I use a glass flask vs. a plastic flask?\u003c\/h3\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Answer\" itemprop=\"acceptedAnswer\" itemscope=\"\"\u003e\n\u003cdiv itemprop=\"text\"\u003e\n\u003cp\u003eUse glass flasks when you need to heat the vessel, when working with organic solvents, when optical clarity matters, or when you need the highest volumetric accuracy (Class A glass). Use plastic flasks when breakage is a safety concern, when working with hydrofluoric acid or strong alkalis that attack glass, when weight matters for transport or fieldwork, or when equipping a classroom with high breakage rates.\u003c\/p\u003e\n\u003cp\u003eBorosilicate glass handles temperatures up to 500°C, resists thermal shock, and is compatible with virtually all lab chemicals except HF. Polypropylene plastic is autoclavable to 135°C, shatter-resistant, and suitable for most aqueous solutions — but it melts on hot plates and degrades in contact with many organic solvents. In most labs, glass and plastic flasks work side by side — glass for heating and reactions, plastic for storage, culturing, and student-handled tasks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Q5 --\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Question\" itemprop=\"mainEntity\" itemscope=\"\" class=\"faq-item\"\u003e\n\u003ch3 itemprop=\"name\"\u003eWhat is a volumetric flask and when do I need one?\u003c\/h3\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Answer\" itemprop=\"acceptedAnswer\" itemscope=\"\"\u003e\n\u003cdiv itemprop=\"text\"\u003e\n\u003cp\u003eA volumetric flask is a precision vessel calibrated to contain one exact volume, marked by a single graduation line on its long narrow neck. It is used exclusively for preparing solutions of known, precise concentration — you dissolve a measured solute, then add solvent to exactly the calibration mark. Volumetric flasks should never be heated, used for mixing, or used for storage.\u003c\/p\u003e\n\u003cp\u003eChoose Class A glass volumetric flasks for analytical chemistry and quantitative work where accuracy directly affects results. Class B glass flasks are suitable for general teaching and routine preparation. Plastic volumetric flasks work for fieldwork and settings where breakage risk outweighs precision requirements, though they have wider tolerances than glass.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Q6 --\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Question\" itemprop=\"mainEntity\" itemscope=\"\" class=\"faq-item\"\u003e\n\u003ch3 itemprop=\"name\"\u003eWhat is a filtering flask and how does it work?\u003c\/h3\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Answer\" itemprop=\"acceptedAnswer\" itemscope=\"\"\u003e\n\u003cdiv itemprop=\"text\"\u003e\n\u003cp\u003eA filtering flask (vacuum flask, side-arm flask) is a thick-walled Erlenmeyer-shaped vessel with a side arm that connects to a vacuum source. It is used in vacuum filtration — a Buchner funnel sits on top of the flask, and vacuum suction pulls liquid through the filter paper much faster than gravity alone. The thick walls withstand the pressure differential created by the vacuum.\u003c\/p\u003e\n\u003cp\u003eA complete vacuum filtration setup requires the filtering flask, a Buchner funnel, a rubber adapter, filter paper, rubber tubing, and a vacuum source (water aspirator or vacuum pump). Filtering flasks should never be heated due to their uneven wall thickness. They are available in glass for most lab applications and in plastic for settings where breakage is a concern.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Q7 --\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Question\" itemprop=\"mainEntity\" itemscope=\"\" class=\"faq-item\"\u003e\n\u003ch3 itemprop=\"name\"\u003eWhat flask do I need for distillation?\u003c\/h3\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Answer\" itemprop=\"acceptedAnswer\" itemscope=\"\"\u003e\n\u003cdiv itemprop=\"text\"\u003e\n\u003cp\u003eFor simple distillation, use a distillation flask — a round-bottom flask with an angled side arm that directs vapors toward a condenser. For fractional distillation, use a standard round-bottom boiling flask connected to a fractionating column (such as a Vigreux column) and then to a condenser. In both cases, the flask should be no more than two-thirds full to allow room for vapor formation.\u003c\/p\u003e\n\u003cp\u003eChoose a flask approximately twice the volume of the liquid being distilled. Common sizes for teaching labs are 100ml, 250ml, and 500ml. Pear-shaped distilling flasks concentrate small volumes at the bottom for efficient micro-scale distillation. All distillation flasks are borosilicate glass — plastic cannot withstand the temperatures involved.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Q8 --\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Question\" itemprop=\"mainEntity\" itemscope=\"\" class=\"faq-item\"\u003e\n\u003ch3 itemprop=\"name\"\u003eWhat are Kjeldahl flasks, evaporating flasks, and iodine flasks used for?\u003c\/h3\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Answer\" itemprop=\"acceptedAnswer\" itemscope=\"\"\u003e\n\u003cdiv itemprop=\"text\"\u003e\n\u003cp\u003eThese are specialty flasks designed for specific analytical procedures. \u003cstrong\u003eKjeldahl flasks\u003c\/strong\u003e are long-necked round-bottom flasks used in the Kjeldahl method for determining nitrogen (and protein) content in food, soil, and other organic materials — the long neck prevents sample loss during acid digestion. \u003cstrong\u003eEvaporating flasks\u003c\/strong\u003e are round-bottom vessels used with rotary evaporators to remove solvents under reduced pressure — standard equipment in organic chemistry research. \u003cstrong\u003eIodine flasks\u003c\/strong\u003e have a ground glass stopper surrounded by a moat that holds a liquid seal, preventing volatile iodine from escaping during iodometric titrations.\u003c\/p\u003e\n\u003cp\u003eThese flasks serve narrow but important functions in analytical and organic chemistry labs. General teaching labs rarely need them, but university analytical and organic chemistry programs consider them standard equipment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Q9 --\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Question\" itemprop=\"mainEntity\" itemscope=\"\" class=\"faq-item\"\u003e\n\u003ch3 itemprop=\"name\"\u003eWhat sizes of laboratory flasks are available?\u003c\/h3\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Answer\" itemprop=\"acceptedAnswer\" itemscope=\"\"\u003e\n\u003cdiv itemprop=\"text\"\u003e\n\u003cp\u003eLaboratory flasks are available in sizes from 5ml to 10,000ml depending on the type. Erlenmeyer flasks range from 25ml to 5,000ml, with 125ml, 250ml, and 500ml being the most common for teaching. Boiling flasks range from 50ml to 5,000ml, with 250ml and 500ml standard for distillation. Volumetric flasks range from 5ml to 2,000ml in precise calibrated sizes. Filtering flasks range from 125ml to 2,000ml.\u003c\/p\u003e\n\u003cp\u003eFor classrooms, stocking Erlenmeyer flasks in 3–4 sizes (125ml, 250ml, 500ml) and volumetric flasks in the volumes your curriculum requires covers most needs. As a general rule, never fill any flask more than two-thirds full — the remaining headspace is needed for mixing, vapor expansion, and safe handling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Q10 --\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Question\" itemprop=\"mainEntity\" itemscope=\"\" class=\"faq-item\"\u003e\n\u003ch3 itemprop=\"name\"\u003eWhere can I buy laboratory flasks?\u003c\/h3\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Answer\" itemprop=\"acceptedAnswer\" itemscope=\"\"\u003e\n\u003cdiv itemprop=\"text\"\u003e\n\u003cp\u003eThe Lab Stockroom carries the full range of laboratory flasks in borosilicate glass and laboratory-grade plastic — Erlenmeyer flasks, boiling flasks, volumetric flasks, filtering flasks, distillation flasks, Kjeldahl flasks, evaporating flasks, and iodine flasks — with detailed specifications, transparent pricing, and fast shipping from New York.\u003c\/p\u003e\n\u003cp\u003eIndividual flasks and class-set quantities are available. Educators, lab managers, and procurement teams can purchase online, request a formal quote, or submit a purchase order. If you need help determining which flask types and sizes fit your curriculum, contact the team for recommendations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","products":[{"product_id":"ch0410i","title":"Flat Bottom Narrow Neck Boiling Flask, Autoclavable, 3000mL, Borosilicate Glass","description":"Flat-bottom narrow-neck boiling flask in autoclavable borosilicate glass holds 3000mL for large-volume heating, distillation, and chemistry procedures.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":45050830880960,"sku":"CH0410I","price":47.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/hesn9ejtq0ahy13ls0i3.jpg?v=1776557211"},{"product_id":"ch0880","title":"9-Piece Organic Chemistry and Distillation Glassware Set, Borosilicate Glass","description":"9-piece organic chemistry and distillation glassware set provides comprehensive apparatus for laboratory synthesis and separation procedures.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":1287926328,"sku":"CH0880","price":208.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/products\/i3pyb7nsu7zqcxocjwoi.jpg?v=1748556971"},{"product_id":"fl0708","title":"2-Pack Narrow Neck Erlenmeyer Flasks, 1000mL, Borosilicate Glass","description":"Pack of 2 narrow-neck Erlenmeyer flasks in borosilicate glass holds 1000mL for chemistry, biology, and laboratory procedures.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":1298845336,"sku":"FL0708","price":51.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/products\/msxbjdftsonaw45oyytb.jpg?v=1776557324"},{"product_id":"ch0448a","title":"Class B Volumetric Flask with 10\/19 Polyethylene Stopper, 5mL, White Graduations, Borosilicate Glass","description":"Class B volumetric flask in borosilicate 3.3 glass holds 5mL with 10\/19 polyethylene stopper for small-volume volumetric measurement procedures.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":1298857808,"sku":"CH0448A","price":14.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/qwsbav3s734fqtt1ttip.jpg?v=1776557344"},{"product_id":"ch0449h","title":"Class A Volumetric Flask with Beaded Rim, 500mL, Borosilicate Glass","description":"Class A volumetric flask in borosilicate glass holds 500mL with beaded rim for precision volumetric measurement and laboratory procedures.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":1298859672,"sku":"CH0449H","price":21.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/4501af7bb5adf2ab4ab008cef1e7095aa8078fbd.jpg?v=1776557434"},{"product_id":"ch0450a","title":"Class B Beaded Rim Volumetric Flask, 5mL, White Graduations and Blue Specifications, Borosilicate 3.3 Glass","description":"Class B volumetric flask in heavy-duty borosilicate glass holds 5mL with beaded rim and white graduations for small-volume volumetric measurement.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":1298860024,"sku":"CH0450A","price":17.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/products\/q6ctdxalwcak9c40nxw1.jpg?v=1776557435"},{"product_id":"ch0450c","title":"Class B Beaded Rim Volumetric Flask, 25mL, Single Graduation, Borosilicate Glass","description":"Class B volumetric flask in borosilicate 3.3 glass holds 25mL with beaded rim and single graduation for general-purpose volumetric measurement.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":1298860200,"sku":"CH0450C","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/products\/lbbj9qb6ygs2vk1gfprm.jpg?v=1776557435"},{"product_id":"ch0420a","title":"Filtering Flask with Integral Side Arm, 100mL, White Graduations, Borosilicate Glass","description":"Buchner filtering flask in borosilicate 3.3 glass holds 100mL with integral side arm and white graduations for vacuum filtration procedures.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":1299156716,"sku":"CH0420A","price":19.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/92c519360df5a41ed18d866f682f7bbf70b717e3.jpg?v=1776557340"},{"product_id":"ch0420b","title":"Conical Filtering Flask with Integral Side Arm, 250mL, White Graduations, Borosilicate Glass","description":"Conical filtering flask in heavy-duty borosilicate 3.3 glass holds 250mL with integral side arm for vacuum filtration and chemistry procedures.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":1299156776,"sku":"CH0420B","price":22.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/e46b297af7f99ce4a6f9cd36197e2dff359b9be2.jpg?v=1776557213"},{"product_id":"ch0420c","title":"Conical Filtering Flask with Integral Side Arm, 500mL, White Graduations, Borosilicate Glass","description":"Conical filtering flask in borosilicate glass holds 500mL with integral side arm for vacuum filtration and chemistry separation procedures.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":1299156956,"sku":"CH0420C","price":29.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/6ba0ccb87ead19807c3823b6214004dc22dea179.jpg?v=1776557340"},{"product_id":"ch0420d","title":"Conical Filtering Flask with Integral Side Arm, 1000mL, White Graduations, Borosilicate Glass","description":"Conical filtering flask in borosilicate glass holds 1000mL with integral side arm for vacuum filtration and chemistry separation procedures.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":1299157076,"sku":"CH0420D","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/f40adba519ebc8b474132fdc61510bc5dbb98598.jpg?v=1776557213"},{"product_id":"ch0420e","title":"Conical Filtering Flask with Integral Side Arm, 2000mL, White Graduations, Borosilicate Glass","description":"Conical filtering flask in borosilicate 3.3 glass holds 2000mL with integral side arm for large-volume vacuum filtration procedures.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":1299157220,"sku":"CH0420E","price":83.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/8cba2d0779e776872c9ad922640906db496f92e7.jpg?v=1776557213"},{"product_id":"ch0424smset","title":"3-Piece Narrow Neck Erlenmeyer Flask Set, 50\/100\/250mL, White Graduations, Borosilicate Glass","description":"3-piece Erlenmeyer flask set includes narrow-neck borosilicate glass flasks in 50mL, 100mL, and 250mL capacities for chemistry procedures.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":25199544968,"sku":"CH0424SMSET","price":22.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/pwvlgjtax9ff1ivo1cki.jpg?v=1776557214"},{"product_id":"fl2403-1","title":"Filtering Flask, 500mL, Borosilicate Glass","description":"Filter flask in borosilicate glass holds 500mL for vacuum filtration and chemistry separation procedures with side arm connection.","brand":"Economy Glass","offers":[{"title":"Default Title","offer_id":25199606088,"sku":"FL2403-1","price":22.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/jfk1gb9qton2ontjt5ir.jpg?v=1776557082"},{"product_id":"ch0420cpst","title":"Conical Filtering Flask with Integral Plastic Side Arm, 500mL, White Graduations, Borosilicate Glass","description":"Conical filtering flask in borosilicate glass holds 500mL with integral plastic side arm for vacuum filtration and chemistry separation.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":8677884952686,"sku":"CH0420CPST","price":29.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/t0yrx4z6qwmsi0lzhduj.jpg?v=1776557213"},{"product_id":"ch0402cset15","title":"Round Bottom Narrow Neck Boiling Flask Set with Stopper and Glass Tubing, 100mL, Borosilicate Glass","description":"Round-bottom narrow-neck boiling flask set includes 100mL borosilicate glass flask with stopper and tubing for distillation and heating procedures.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28114037047380,"sku":"CH0402CSET15","price":20.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/mjywd4uhbkoi8h3s4ljf.jpg?v=1776557208"},{"product_id":"ch0420apst","title":"Conical Heavy-Wall Filtering Flask with Plastic Side Arm, 100mL, Borosilicate Glass","description":"Conical heavy-wall filtering flask in borosilicate glass holds 100mL with plastic side arm for vacuum filtration and chemistry separation.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28114039898196,"sku":"CH0420APST","price":22.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/ochhokx4blieynujmzal.jpg?v=1776557266"},{"product_id":"ch0420bpst","title":"Conical Filtering Flask with Integral Plastic Side Arm, 250mL, White Graduations, Borosilicate Glass","description":"Conical filtering flask in borosilicate glass holds 250mL with integral plastic side arm for vacuum filtration and chemistry separation.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28114039996500,"sku":"CH0420BPST","price":28.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/puacnehycefsxv348xld.jpg?v=1776557267"},{"product_id":"ch0420dpst","title":"Conical Filtering Flask with Integral Plastic Side Arm, 1000mL, White Graduations, Borosilicate Glass","description":"Conical filtering flask in borosilicate 3.3 glass holds 1000mL with integral plastic side arm for vacuum filtration and chemistry separation.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28114040324180,"sku":"CH0420DPST","price":59.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/products\/mlhmdyd4uev542qm3hxl.jpg?v=1776557267"},{"product_id":"ch0420epst","title":"Conical Filtering Flask with Integral Plastic Side Arm, 2000mL, White Graduations, Borosilicate Glass","description":"Heavy-duty conical filtering flask in borosilicate glass holds 2000mL with integral plastic side arm for vacuum filtration procedures.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28114040717396,"sku":"CH0420EPST","price":81.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/ni311zlzzgzoaxq3whun.jpg?v=1776557289"},{"product_id":"ch0420fpst","title":"Conical Filtering Flask with Integral Plastic Side Arm, 5000mL, White Graduations, Borosilicate Glass","description":"Conical filtering flask in borosilicate glass holds 5000mL with integral plastic side arm for large-volume vacuum filtration and separation procedures.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28114040815700,"sku":"CH0420FPST","price":226.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/vny4c3lhpbou3y9grldw.jpg?v=1776557267"},{"product_id":"ch0442lset","title":"Class B Borosilicate Glass Volumetric Flask Set, 3-Piece, 250-1000mL","description":"\u003cp\u003eCovering the three most common analytical volumes, this Class B borosilicate volumetric flask set ships with glass stoppers and ASTM-E288-compliant calibration marks.\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28114045927508,"sku":"CH0442LSET","price":62.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/hs404wkvh5cszb2ohhqf.jpg?v=1776723325"},{"product_id":"ch0442set","title":"ASTM Class B 3-Piece Volumetric Flask Set with Glass Stoppers, 25\/50\/100mL, Blue Graduations, Borosilicate Glass","description":"ASTM Class B 3-piece volumetric flask set includes 25mL, 50mL, and additional sizes in borosilicate glass with glass stoppers.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28114046222420,"sku":"CH0442SET","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/hliakivpr1n67shxwnkh.jpg?v=1776557219"},{"product_id":"ch0443g","title":"ASTM Class A Volumetric Flask with Blue Snap Cap, 2000mL, White Graduations and Blue Specifications, Borosilicate 3.3 Glass","description":"ASTM Class A volumetric flask in borosilicate glass holds 2000mL with blue snap cap for large-volume precision volumetric measurement.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28114047729748,"sku":"CH0443G","price":61.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/omciftt1qu8s8yfgnv0j.jpg?v=1776557296"},{"product_id":"hbflaskcjpk6","title":"6-Pack Boiling Flasks with Cork Stoppers, 50mL, Borosilicate Glass","description":"Pack of 6 narrow-neck Erlenmeyer flasks in borosilicate glass holds 50mL with cork stoppers for chemistry and laboratory procedures.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28114076958804,"sku":"HBFLASKCJPK6","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/t52xieiwxd2tomtvv6q3.jpg?v=1776557093"},{"product_id":"hbflaskdmpk6","title":"6-Pack Erlenmeyer Flasks with Cork Stoppers, 100mL, Borosilicate Glass","description":"Pack of 6 narrow-neck Erlenmeyer flasks in borosilicate glass holds 100mL with cork stoppers for chemistry and laboratory procedures.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28114077122644,"sku":"HBFLASKDMPK6","price":86.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/ragbtkxebxwbq3yqu69g.jpg?v=1776557093"},{"product_id":"ch0441d","title":"ASTM Class A Volumetric Flask with Glass Stopper, 200mL, White Graduations and Blue Specifications, Borosilicate Glass","description":"ASTM Class A volumetric flask in heavy-duty borosilicate glass holds 200mL with glass stopper for precision volumetric measurement procedures.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28234055417940,"sku":"CH0441D","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/0eda92f24e0023e5c7916431862bb7b0c0b4ca1f.jpg?v=1776557341"},{"product_id":"ch0443a01","title":"ASTM E288 Class A Volumetric Flask with Snap Cap, 5mL, Borosilicate Glass","description":"ASTM E288 Class A volumetric flask in borosilicate glass holds 5mL with snap cap and graduations for precision volumetric measurement.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28234056368212,"sku":"CH0443A01","price":18.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/whs4spaxjmfb6i4aqxm7.jpg?v=1776557341"},{"product_id":"ch0443gwt","title":"ASTM Class A Volumetric Flask with Snap Cap, 2000mL, Borosilicate 3.3 Glass","description":"ASTM Class A volumetric flask in borosilicate glass holds 2000mL with snap cap and white graduations for precision volumetric measurement.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28234057187412,"sku":"CH0443GWT","price":42.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/products\/vetyugdoad4uasjt3zfj.jpg?v=1776557342"},{"product_id":"ch0444a","title":"ASTM Class B Volumetric Flask with Blue Snap Cap, 50mL, White Graduations, Borosilicate Glass","description":"ASTM Class B volumetric flask in heavy-duty borosilicate 3.3 glass holds 50mL with blue snap cap for general-purpose volumetric measurement.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28234057482324,"sku":"CH0444A","price":20.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/iue4xr92gk6bdkqb6tqx.jpg?v=1776557342"},{"product_id":"ch0444a01","title":"ASTM E288 Class B Volumetric Flask with Snap Cap, 5mL, Borosilicate Glass","description":"ASTM E288 Class B volumetric flask in borosilicate glass holds 5mL with snap cap and graduations for small-volume volumetric measurement.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28234057580628,"sku":"CH0444A01","price":10.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/ka9uketkamculdifn4ng.jpg?v=1776557342"},{"product_id":"ch0444b","title":"ASTM Class B Volumetric Flask with Snap Cap, 100mL, White Graduations, Borosilicate Glass","description":"ASTM Class B volumetric flask in heavy-duty borosilicate 3.3 glass holds 100mL with snap cap for general-purpose volumetric measurement procedures.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28234057711700,"sku":"CH0444B","price":14.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/vdfqzmsigcpjaxx9ukx3.jpg?v=1776557342"},{"product_id":"ch0444c","title":"ASTM Class B Volumetric Flask with Blue Snap Cap, 200mL, White Graduations, Borosilicate Glass","description":"ASTM Class B volumetric flask in borosilicate 3.3 glass holds 200mL with blue snap cap for general-purpose volumetric measurement procedures.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28234058498132,"sku":"CH0444C","price":13.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/6b0ced08c84fc573442b6bf7c81525b2605ad190.jpg?v=1776557343"},{"product_id":"ch0444a01wt","title":"ASTM Class B Volumetric Flask with Snap Cap, 5mL, White Markings, Borosilicate Glass","description":"ASTM Class B volumetric flask in borosilicate glass holds 5mL with snap cap and white graduations for small-volume volumetric measurement.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28234060169300,"sku":"CH0444A01WT","price":10.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/products\/zr33oj1kle2vjcjyntgg.jpg?v=1776557349"},{"product_id":"ch0424lgset","title":"3-Piece Narrow Neck Erlenmeyer Flask Set, 500\/1000\/2000mL, White Graduations, Borosilicate Glass","description":"Erlenmeyer flask set includes three borosilicate 3.3 glass narrow-neck flasks in 500mL, 1000mL, and 2000mL capacities for chemistry procedures.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28234064953428,"sku":"CH0424LGSET","price":67.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/df5c77f0ca42bfa5982099ebd4e918e9a06acf1e.jpg?v=1776557350"},{"product_id":"ch0431g","title":"Autoclavable Chemical-Resistant Translucent Polypropylene Narrow Neck Erlenmeyer Flask, 250mL","description":"Translucent polypropylene Erlenmeyer flask holds 250mL with a narrow neck for autoclavable chemical-resistant conical-flask workflows.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28234183442516,"sku":"CH0431G","price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/products\/wgvdci5sznrgur6immmt.jpg?v=1776557431"},{"product_id":"ch0439l","title":"Class A Volumetric Flask with Hexagonal Hollow Glass Stopper, 5000mL, Blue Graduations, Borosilicate Glass","description":"Class A volumetric flask in heavy-duty borosilicate glass holds 5000mL with hexagonal hollow glass stopper for large-volume precision measurement.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28234186457172,"sku":"CH0439L","price":92.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/awuzlenqewj6nowc3itk.jpg?v=1776557432"},{"product_id":"ch0444g","title":"ASTM Class B Volumetric Flask with Blue Snap Cap, 2000mL, White Graduations and Blue Specifications, Borosilicate 3.3 Glass","description":"ASTM Class B volumetric flask in borosilicate 3.3 glass holds 2000mL with blue snap cap for large-volume volumetric measurement procedures.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28234186522708,"sku":"CH0444G","price":43.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/5008347bcae7191b9e514800ffea2608ca5c4e8b.jpg?v=1776557432"},{"product_id":"ch0444gwt","title":"ASTM Class B Volumetric Flask with Blue Snap Cap, 2000mL, White Graduations and White Specifications, Borosilicate 3.3 Glass","description":"ASTM Class B volumetric flask in borosilicate 3.3 glass holds 2000mL with blue snap cap and white graduations for large-volume measurement.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28234186784852,"sku":"CH0444GWT","price":44.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/products\/lhbtl3b9jcuevwcmqicp.jpg?v=1776557432"},{"product_id":"ch0445h","title":"Class A Borosilicate Glass Volumetric Flask with Polypropylene Stopper, 2000mL","description":"\u003cp\u003eClass A and ASTM E288-compliant in borosilicate 3.3 glass, this large-volume volumetric flask seals with a polypropylene stopper for precise bulk solution preparation.\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28234189832276,"sku":"CH0445H","price":42.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/98453970469adf815e56d96cdedaf0afccde9497.jpg?v=1776723328"},{"product_id":"ch0424set","title":"5-Piece Narrow Neck Erlenmeyer Flask Set, 50\/150\/250\/500\/1000mL, White Graduations, Borosilicate Glass","description":"5-piece Erlenmeyer flask set includes narrow-neck flasks in 50mL, 150mL, 250mL, and additional sizes for comprehensive chemistry applications.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":28539478343764,"sku":"CH0424SET","price":78.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/ngklthbgruhoujclo9vd.jpg?v=1776557636"},{"product_id":"ch0441cwt","title":"ASTM Class A Autoclavable Volumetric Flask with No.13 Glass Stopper, 100mL, White Graduations, Borosilicate 3.3 Glass","description":"ASTM Class A autoclavable volumetric flask in borosilicate glass holds 100mL with no stopper for sterilization and precision measurement.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":30107419836500,"sku":"CH0441CWT","price":22.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/products\/brhp2owwrq9bat4m6mv6.jpg?v=1776557348"},{"product_id":"ch1952d","title":"Class A Volumetric Flask with 10\/19 Polypropylene Stopper, 25mL, Blue Graduations, Borosilicate Glass","description":"Class A volumetric flask in borosilicate glass holds 25mL with 10\/19 polypropylene stopper and ±0.04mL tolerance for precision measurement.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":30675604897876,"sku":"CH1952D","price":17.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/products\/wzzjw8yddmsrhm9iocla.jpg?v=1776557633"},{"product_id":"ch1960d","title":"Class A Volumetric Flask with 10\/19 Polypropylene Stopper and Eisco Labs Branding, 25mL, Blue Graduations, Borosilicate Glass","description":"Class A volumetric flask in borosilicate glass holds 25mL with 10\/19 polypropylene stopper and ±0.04mL tolerance for precision measurement.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":30675606143060,"sku":"CH1960D","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/icgjaw573hao1yqlbz6l.jpg?v=1776557657"},{"product_id":"fl0707","title":"6-Pack Narrow Neck Erlenmeyer Flasks, 500mL, Borosilicate Glass","description":"Pack of 6 narrow-neck Erlenmeyer flasks in borosilicate glass holds 500mL for chemistry, biology, and laboratory procedures.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":43516785656000,"sku":"FL0707","price":73.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/8f0b9d3c36efdcafd46f198de978a828a07cafa9.jpg?v=1776557081"},{"product_id":"ch196031","title":"3-Piece Premium Narrow Neck Erlenmeyer Flask Set, 50\/100\/250mL, White Graduations, Borosilicate 3.3 Glass","description":"Premium Erlenmeyer flask set includes three narrow-neck borosilicate glass flasks in 50mL, 100mL, and 250mL capacities for chemistry procedures.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":32003344957524,"sku":"CH196031","price":20.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/products\/sbwlfykzatpgwcrcrjn4.jpg?v=1776557682"},{"product_id":"ch196033","title":"3-Piece Premium Narrow Neck Erlenmeyer Flask Set, 500\/1000\/2000mL, White Graduations, Borosilicate 3.3 Glass","description":"Premium Erlenmeyer flask set includes three narrow-neck borosilicate 3.3 glass flasks in 500mL, 1000mL, and 2000mL capacities for chemistry.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":32003345023060,"sku":"CH196033","price":83.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/products\/g382ybooh1mthnwb5hkb.jpg?v=1776557683"},{"product_id":"ch196034","title":"5-Piece Premium Narrow Neck Erlenmeyer Flask Set, 50\/150\/250\/500\/1000mL, White Graduations, Borosilicate 3.3 Glass","description":"Premium Erlenmeyer flask set includes five narrow-neck borosilicate 3.3 glass flasks in 50mL, 150mL, 250mL, and additional sizes for chemistry.","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":32003345088596,"sku":"CH196034","price":57.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/products\/d71coxlneukv7qamxpiz.jpg?v=1776557683"},{"product_id":"ch196041","title":"Class A Borosilicate Glass Volumetric Flask Set, 3-Piece, 10-50mL","description":"\u003cp\u003eShipped as the three smallest analytical sizes, this Class A borosilicate volumetric flask set carries glass penny stoppers and ASTM E288 single-mark calibration.\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":32003345154132,"sku":"CH196041","price":26.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/f401219613a77a6187bfc0e47a56585178d2544d.jpg?v=1776723330"},{"product_id":"premium-volumetric-flask-set-50ml-100ml-250ml","title":"Class A Borosilicate Glass Volumetric Flask Set, 3-Piece, 50-250mL","description":"\u003cp\u003eCalibrated to ASTM E288 Class A across the three mid-range analytical volumes, this borosilicate volumetric flask set ships with glass penny stoppers for precision dilution work.\u003c\/p\u003e","brand":"Eisco Labs","offers":[{"title":"Default Title","offer_id":32003345285204,"sku":"CH196042","price":38.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/0623\/files\/4572c81b0565c3bcf51ff92e35ae29c7bf88f235.jpg?v=1776723330"}],"url":"https:\/\/www.thelabstockroom.com\/collections\/tls-flasks.oembed","provider":"The Lab Stockroom","version":"1.0","type":"link"}