Automatic Class A Burettes

Features:

• Self-Zeroing Convenience: The automatic design allows the user to fill the burette beyond the zero mark; the excess liquid automatically drains back into the reservoir, providing a perfect zero every time.
• Superior Drop Control: The PTFE needle valve allows for significantly more precise delivery than standard stopcocks, which is critical when approaching a sensitive titration endpoint.
• Contamination Shield: Since the titrant remains in a closed system between the reservoir and the burette, the risk of airborne contamination or evaporation is greatly reduced.
• Grease-Free Maintenance: The PTFE components require no lubrication, making the system compatible with a wide range of organic and inorganic reagents.

Laboratory Operation Tips:

• System Priming: When first filling the reservoir, ensure all air is purged from the delivery tip. Use the rubber bellows to pump the liquid into the burette and dispense a small amount to ensure a continuous, bubble-free column of liquid.
• Storage: If the burette will not be used for an extended period, drain the titrant back into the reservoir or a storage bottle to prevent crystallization within the needle valve.
• Cleaning: The modular design allows for the disassembly of the bellows and valves for thorough rinsing with deionized water or specialized glass cleaners.