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White circular glass microfiber filter membrane 3.7 cm diameter pack of 100

Lab Safety Supply Inc

Lab Safety Supply Inc 12K954 Filter Membrane 0.7 µm 3.7 cm PK100

SKU CH-3NCF-VY5DM

Binderless borosilicate glass microfiber filter, 3.7 cm diameter, 0.7 µm pore size, 0.4 mm thick, rated to 500 °C for liquids or air, pack of 100

  • Product typeGround Fault and Current Leakage Testers
  • Binderless borosilicate microfiber resists shedding
  • 7 µm pore size captures fine particles
  • 7 cm diameter fits standard holders
  • Withstands 500 °C for high-temp use
  • Pack of 100 supports high-volume testing

Filter Membrane for Laboratory Use

The Lab Safety Supply 12K954 filter membrane uses binderless borosilicate glass microfiber to trap particles in liquids or air. Supplied in a pack of 100 discs, it is designed for analytical workflows that require clean filtration media.

0.7 µm Pore Size Determines Retention

A pore size of .7 µm sets the particle retention limit for this Grade F membrane. Choose it when your method specifies this exact rating; a larger or smaller pore will not meet the same analytical requirement.

Handles 500 °C and 100 Discs per Pack

The membrane withstands temperatures up to 500 °C and is 0.4 mm thick with a 3.7 cm diameter. It covers high-temperature gravimetric work but runs out when sub-micron sterile filtration or larger diameter holders are needed.

How it compares

Measured against everything we stock in Meters, Testers & Measuring Tools, at today’s prices. Recalculated every night.

Price $20.99
Cheaper than about 76% of the 3,030 comparable items (median $54.99).

Specifications

Product
Brand nameLAB SAFETY SUPPLY
Product typeGround Fault and Current Leakage Testers

Questions about this item

What does the 0.7 µm pore size mean for my filtration work?

The 0.7 µm pore size captures fine particles from liquids or air while maintaining flow, suited for analytical sample preparation and environmental monitoring.

How does the binderless borosilicate glass microfiber material affect use at high temperatures?

The binderless borosilicate glass microfiber withstands continuous operation up to 500 degrees C without binder degradation or sample contamination.

Will the 3.7 cm diameter discs fit my standard filter holder?

The 3.7 cm diameter matches common laboratory filter funnels and vacuum manifolds designed for this disc size.

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