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White cellulose filter paper discs 11 cm diameter pack of 100

Lab Safety Supply Inc

Lab Safety Supply Inc LABEXACT 12K918 20 µm Quantitative Filter Paper 11.0 cm PK100

SKU CH-3M8P-KX9KT

Quantitative filter paper discs, 11 cm diameter with 20 µm pore size, Grade 41 cellulose, pack of 100

  • Product typeGround Fault and Current Leakage Testers
  • 20 µm pore size enables precise quantitative filtration
  • 0 cm discs fit standard laboratory funnels
  • Grade 41 cellulose handles gases and liquids
  • 22 mm thickness resists tearing during use
  • 100-piece pack supports high-volume testing needs

Lab Safety Supply LABEXACT 12K918 Filter Paper

The Lab Safety Supply LABEXACT 12K918 is a qualitative filter paper disc designed for laboratory filtration tasks. It comes in a package of 100 discs made from cellulose material. This product suits technicians and researchers who need consistent separation of solids from liquids or gases in routine analytical work.

20 µm pore size and Grade 41 specification

The single specification that decides suitability is the uniform 20 µm pore size combined with Grade 41 rating. Both minimum and maximum pore sizes are 20 µm, providing fast porosity for rapid flow rates. The discs measure 11.0 cm in diameter with a thickness of 0.22 mm and meet FDA standards for applicable uses.

Simple disc placement with no fluting

Installation requires placing a single flat disc into a compatible funnel or holder; the lack of fluting means no special orientation is needed. The main issue arises if the 11 cm diameter does not match the funnel size, causing bypass or tearing. Users should verify holder dimensions before starting a filtration run to avoid sample loss.

How it compares

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

Price $9.99
Cheaper than about 91% 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 20 µm pore size mean for daily filtration work?

The 20 µm pores retain particles down to that size while letting liquids pass quickly, making the discs suitable for routine quantitative gravimetric analysis.

How does the Grade 41 designation affect what the paper can handle?

Grade 41 identifies a fast-flow qualitative cellulose grade that meets FDA standards for contact with gases and liquids.

Will the 11 cm discs fit my standard funnel or holder?

Each disc measures 11 cm in diameter, matching common laboratory funnel sizes for direct placement without trimming.

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