- 10 ml borosilicate ASTM burette
- Glass key stopcock
- Single straight bore
- Class B
- 0.05 ml blue ceramic graduations
- Tolerance ±0.05 ml
- Made from high quality 3.3 borosilicate glass
- Superior chemical durability*
- Complies with DIN ISO 385 and ASTM E1272
Material | 3.3 Borosilicate Glass | |
Class | Class B | |
Capacity | 10 ml | |
Graduation | 0.05 ml | |
Tolerance | ±0.05 ml | |
Stopcock | Glass Key | |
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 |