Eisco Labs
| SKU
CH0424F
Erlenmeyer Flask, 250mL - Narrow Neck - Borosilicate Glass
⚠️ WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
Regular price
$16.59
Sale price
Regular price
In Stock (520)
- Free US Shipping $100+ 30 Day Free Returns
Product Description
Product Description
This 250mL Erlenmeyer flask is manufactured from heavy-duty borosilicate 3.3 glass and features white enamel graduations marked every 50mL. The narrow-neck design conforms to DIN ISO 1773 standards for conical flasks, with an inner neck diameter of 28.8mm and an outer neck diameter of 33.7mm.
Uniform wall thickness makes the flask well suited for even heating, and the reinforced rim offers added protection against accidental impacts. The flask is autoclavable and microwave-safe, with strong chemical durability and low thermal expansion. Borosilicate 3.3 glass heat tolerances are as follows: strain point 515°C, annealing point 565°C, softening point 820°C.
Specifications
Specifications
- Material: 3.3 Borocilicate Glass
- Capacity: 250 ml
- Graduations: 50 ml
- Thermal Properties
Coefficient of Linear Expansion: 32.5 x 10⁻⁷ / C°
- Strain Point: 515°C
- Annealing Point: 565°C
- Softening Point: 820°C
- Specific Heat: 0.2
- Thermal Conductivity (Cal/cm3°C/Sec): 0.0027
- Chemical Durability
Contact Chemical: Duration (hours)
Loss in weight (mg/m²)
- Water distilled at 100°C: 6
10
- Water vapour steam at 121°C: 1
75
- Acid HCl: 6
100
- 80% H₂SO₄ at 130°C: 12
140
- Alkali -1N solution of Na₂CO₃ boiling: 6
4000
- Isotonic infusion Fluids
NaCl (0.85%) at 121°C: 2.5
70
Glucose (5%) at 121°C
2.5
50
- Dimensions (L × W × H): 4.00" × 6.00" × 6.00" (10.2cm × 15.2cm × 15.2cm)
- Weight: 0.70 lbs (318g)
Shipping & Returns
Shipping & Returns
SHIPPING
Ships from Rochester, NY. Orders received by 1:00 PM EST M-F typically ship same business day. Free US shipping on orders over $100. Expedited options available.
RETURNS
30-day return window. Unused items receive a full refund; used items are eligible for store credit or exchange. Return shipping is paid by the customer. Clearance items are final sale. Defective products? Contact us directly.
Payment & Security
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