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Six clear glass burettes with PTFE stopcocks in a row

Lab Safety Supply Inc

Lab Safety Supply Inc 25 mL PTFE Burette Grade B PK6

SKU CH-5087-PYT35

Pack of six 25 mL glass burettes with PTFE stopcocks, Grade B tolerance ±0.1 mL and 560 mm height

  • PTFE stopcock resists chemical attack during titrations
  • 25 mL capacity handles standard volumetric procedures
  • Grade B tolerance of ±0.1 mL meets routine accuracy needs
  • 560 mm overall height fits common burette stands
  • Pack of six supplies multiple workstations at once

25 mL PTFE Burette Pack of Six

This pack contains six straight-bore glass burettes each calibrated to 25 mL with 0.1 mL graduation increments. The Class B tolerance is ±0.1 mL. A PTFE stopcock and closure are included on every unit.

Capacity and Grade B headroom

Each burette delivers a usable range from 0 mL to 25 mL, suitable for routine titrations where Class B accuracy is accepted. The ±0.1 mL tolerance sets the limit for analytical precision, so work requiring tighter error bounds will need Class A glassware.

Integration into a lab setup

The 560 mm overall height demands a stand and clamp with sufficient vertical reach. PTFE components resist most common reagents and eliminate the need for separate lubrication. Clear glass allows direct meniscus reading without additional illumination.

How it compares

Measured against everything we stock in Lab Equipment & Supplies, at today’s prices. Recalculated every night.

Price $73.99
Typical for this category: the median of 734 items is $60.99.

Specifications

Product
Brand nameZORO SELECT

Questions about this item

Will the 25 mL capacity and 0.1 mL graduations on these burettes match the glassware I already use for titrations?

Each burette holds 25 mL with 0.1 mL graduation increments and a +/-0.1 mL tolerance, matching standard Class B volumetric work.

How can I verify the PTFE stopcock is sealing correctly after I assemble the six burettes?

Close the PTFE stopcock, fill to the 25 mL mark, and watch the meniscus; it should hold without drift at the 0.1 mL graduation lines.

Does the pack of six include the PTFE closures or do I need to order them separately?

The PK6 pack includes PTFE closures and PTFE stopcocks already fitted to each 560 mm straight-bore glass burette.

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