Class A Borosilicate Glass Volumetric Flask Set, 3-Piece, 10-50mL

• Material: 3.3 Borosilicate Glass
• Class: Class A
• Capacity: 10 ml, 25 ml, 50 ml
• Stopper: Solid glass, No. 9, No. 9, No. 13
• Tolerance: ±0.020 ml, ±0.030 ml, ±0.050 ml
• Graduation: yes
• 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): 6.50" × 7.50" × 3.00" (16.5cm × 19.1cm × 7.62cm)
• Weight: 0.50 lbs (227g)