Class B Graduated Burettes (TD), PTFE Detachable Stopcock
Manufacturer: United Scientific
The Class B PTFE Detachable Stopcock Burettes from United Scientific are engineered for reliability and long-term durability in educational and industrial laboratories. Manufactured from high-quality, accurate-bore borosilicate glass tubing, these burettes ensure consistent volumetric delivery for various titration procedures. The standout feature of this series is the detachable PTFE stopcock and tip. Unlike traditional one-piece burettes, the modular design allows the tip and valve assembly to be removed from the glass body. This facilitates thorough cleaning of the bore and allows for the cost-effective replacement of damaged tips without having to discard the entire glass burette.
Description
In Stock!
Lead Times May Vary.
Features:
- Grease-Free Operation: The PTFE (Teflon) stopcock does not require joint grease, preventing sample contamination and ensuring the valve will not "freeze" or seize over time.
- Cost-Efficient Maintenance: Broken tips are the most common point of failure in glassware; the detachable design allows you to replace just the tip, significantly extending the life of your equipment.
- Accurate Bore Tubing: Precision-calibrated glass ensures that liquid delivery is linear and meets Class B volumetric tolerances.
- Easy Cleaning: Removing the stopcock allows for unobstructed access to the burette tube for use with specialized cleaning brushes or soaking in detergent.
Best Practices for Titration:
- IMPORTANT! Air Bubble Removal: Before beginning a titration, open the stopcock fully to "flush" the tip. Ensure no air bubbles remain in the detachable tip, as these will cause significant volumetric errors.
- Storage: If the burette is to be stored for a long period, loosen the PTFE nut slightly to prevent the stopcock plug from deforming.
- Rinsing: Always rinse the burette with a small amount of your titrant (the solution in the burette) before filling it to ensure any residual cleaning water does not dilute your standard.
| SKU | Calibration | Includes | Material | Tolerance | Type | Graduated |
|---|---|---|---|---|---|---|
| BR2116-10 | To Deliver | PTFE Detachable Stopcock | Glass | ± 0.04 mL | Class B | Yes |
| BR2116-25 | To Deliver | PTFE Detachable Stopcock | Glass | ± 0.06 mL | Class B | Yes |
| BR2116-50 | To Deliver | PTFE Detachable Stopcock | Glass | ± 0.10 mL | Class B | Yes |
| SKU | Length | Width | Height |
|---|---|---|---|
| BR2116-10 | 24.1 in | 24.1 in | 4 in |
| BR2116-25 | 24.1 in | 24.1 in | 4 in |
| BR2116-50 | 32.8 in | 32.8 in | 4 in |
The Class B PTFE Detachable Stopcock Burettes from United Scientific are engineered for reliability and long-term durability in educational and industrial laboratories. Manufactured from high-quality, accurate-bore borosilicate glass tubing, these burettes ensure consistent volumetric delivery for various titration procedures. The standout feature of this series is the detachable PTFE stopcock and tip. Unlike traditional one-piece burettes, the modular design allows the tip and valve assembly to be removed from the glass body. This facilitates thorough cleaning of the bore and allows for the cost-effective replacement of damaged tips without having to discard the entire glass burette.
Starting at $74.00
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