A Class B Glass Burette with a PTFE Stopcock is the standard choice for general laboratory titrations where high precision is required but formal certification is not necessary. It combines the chemical resistance of borosilicate glass with the convenience of a maintenance-free valve.
Key Features
- PTFE Stopcock (Key): Unlike glass keys, PTFE is self-lubricating and grease-free. This prevents "frozen" valves and ensures your samples aren't contaminated by stopcock grease.
- Class B Accuracy: Offers a standard tolerance (e.g., ±0.10 mL for a 50mL unit), which is twice that of Class A but perfectly suitable for most educational and routine industrial tests.
- Material: Built from Borosilicate 3.3 glass, making it highly resistant to acids, alkalis, and thermal shock.
- Graduations: Usually features permanent, easy-to-read blue or white enamel markings.
Standard Capacities & Tolerances (Class B)
| Capacity | Graduation | Tolerance (±) |
|---|---|---|
| 10 mL | 0.05 mL | 0.05 mL |
| 25 mL | 0.10 mL | 0.10 mL |
| 50 mL | 0.10 mL | 0.10 mL |
| 100 mL | 0.20 mL | 0.20 mL |
Specifications
- Compliance: Conforms to ISO 385 Class B standards.
- Accuracy: Class B
- Certificate: NONE
- Material: High-grade Borosilicate 3.3 Glass, providing superior resistance to chemical corrosion and thermal shock.
- Graduations: Durable Blue (amber on request) enamel graduations.
- Stopcock Type: Straight Bore with a PTFE (Polytetrafluoroethylene)
- Volume: 10ml or 100ml
- Brand: OMSONS
- Product of India
Tolerance
| Product Code | Capacity mL (±mL) | Tolerance mL |
| BTRSPT10ML-CLB | 10mL | 0,05 |
| BTRSPT25ML-CLB | 25mL | 0,1 |
| BTRSPT50ML-CLB | 50mL | 0,1 |
| BTRSPT100ML-CLB | 100mL | 0,2 |