• Compliance with DIN/ISO 385 standard
• PTFE Needle valve stopcock
• Printed in Amber colour
| PART No. | Capacity (ml) | Division (ml) | ±Tol. (ml) | PACK Qty. |
| 4420-10 | 10 | 0.05 | 0.03 | 12 |
| 4420-25 | 25 | 0.10 | 0.05 | 12 |
| 4420-50 | 50 | 0.10 | 0.05 | 12 |
| 4420-100 | 100 | 0.20 | 0.1 | 12 |
Here are some common uses for Class B burettes with PTFE needle valve stopcocks:
- Titration Procedures:
- Burettes with PTFE needle valve stopcocks are ideal for titration experiments, providing precise and fine control over the titrant flow. The needle valve allows for gradual and accurate addition of titrant to the analyte solution.
- Analytical Chemistry:
- These burettes are well-suited for analytical chemistry applications where accurate but not extremely precise volumetric measurements are required. The PTFE needle valve enhances control during analytical procedures.
- Quality Control Checks:
- Laboratories performing routine quality control checks, especially in industries where a moderate level of precision is acceptable, may utilize Class B burettes with PTFE needle valve stopcocks.
- Standardization of Solutions:
- Burettes with PTFE needle valve stopcocks are suitable for the preparation and standardization of solutions, offering precise control over the volume dispensed.
- Education and Training:
- These burettes are commonly used in educational laboratories to teach students about titration techniques, volumetric measurements, and the use of PTFE for chemical resistance in the needle valve.
- Routine Laboratory Procedures:
- In routine laboratory work where precise volume measurements are required, but the highest level of accuracy is not critical, Class B burettes with PTFE needle valve stopcocks may be used.
- Non-Critical Research Applications:
- In research settings where a moderate level of accuracy is sufficient, Class B burettes with PTFE needle valve stopcocks can be used for dispensing and measuring volumes.
- Chemically Reactive Solutions:
- PTFE is chemically inert, making these burettes suitable for applications involving chemically reactive solutions or substances.
- Versatile Liquid Dispensing:
- Class B burettes with PTFE needle valve stopcocks offer versatility in dispensing liquids with a high degree of accuracy, making them useful in different laboratory procedures.
- Resistance to Corrosive Substances:
- PTFE needle valve stopcocks provide resistance to corrosion, ensuring compatibility with a wide range of corrosive reagents.
