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White cellulose filter paper discs 18.5 cm diameter pack of 100

Lab Safety Supply Inc

Lab Safety Supply Inc 12K929 Filter Paper 2.5um 18.5cm PK100

SKU CH-Y13A-65FD1

Quantitative cellulose filter paper discs with 2.5 micron pore size, 18.5 cm diameter, grade 42, pack of 100

  • Product typeGround Fault and Current Leakage Testers
  • Quantitative analysis with consistent 2.5 micron pore size
  • Grade 42 cellulose disc meets FDA standards
  • Slow porosity ensures thorough filtration of gases and liquids
  • 17 mm thickness provides reliable handling strength
  • Pack of 100 discs supports high-volume laboratory workflows

Lab Safety Supply Filter Paper 2.5 µm

Quantitative filter paper discs measure 18.5 cm in diameter with a uniform 2.5 micron pore size. Grade 42 cellulose material provides slow porosity for precise particle retention. Each pack contains 100 discs at 0.17 mm thickness suitable for gas and liquid filtration. FDA standards apply to this product.

Suits labs needing consistent 2.5 µm filtration

Researchers performing quantitative analysis on gases or liquids will find the slow porosity and grade 42 rating appropriate. Buyers requiring faster flow rates or larger pore sizes should look at alternative filter grades. The 100-disc pack supports high-volume workflows without frequent reordering.

FDA compliance enables regulated use

Meeting FDA standards allows these discs to be used in food, pharmaceutical and environmental testing where regulatory approval is mandatory. The cellulose construction ensures broad chemical compatibility across common laboratory solvents. Packaging in quantities of 100 reduces handling and contamination risk during batch processing.

How it compares

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

Price $26.99
Cheaper than about 69% 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

Do I need a 18.5 cm funnel or holder to use these 2.5 µm filter discs?

Yes, the discs are 18.5 cm in diameter, so a matching funnel, filter holder or vacuum apparatus of that size is required to support them during filtration.

Can I stack these Grade 42 papers with coarser grades in the same filtration train?

Grade 42 has a uniform 2.5 µm pore size; stacking it with coarser papers is possible, but the finest layer will dictate the final particle retention.

How can I confirm the paper is performing to its 2.5 µm rating after installation?

Collect a known particle suspension, filter it, then analyse the filtrate — if particles larger than 2.5 µm are absent, the paper is working as specified.

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