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Pack of 100 white cellulose filter paper discs 18.5 cm diameter 11 micron pore size

Lab Safety Supply Inc

Lab Safety Supply Inc 12K897 Qualitative Filter Paper 18.5 cm 11 µm PK100

SKU CH-7JSJ-75A7R

Qualitative cellulose filter paper discs, 18.5 cm diameter with 11 µm pore size, supplied in packs of 100

  • Product typeGround Fault and Current Leakage Testers
  • Cellulose construction ensures chemical compatibility
  • 11 µm pore size delivers consistent filtration
  • 5 cm diameter fits standard funnels
  • 2 mm thickness provides reliable strength
  • Pack of 100 supports high-volume lab work

Qualitative Filter Paper 18.5 cm

This qualitative filter paper comes in 18.5 cm discs made from cellulose. Each pack contains 100 pieces with a uniform 11 µm pore size and a thickness of .2 mm. The paper is designed for general laboratory filtration of gases and liquids. It meets FDA standards for its intended use.

Suited for routine lab filtration

Technicians performing qualitative analysis or sample preparation will find this grade 1 paper appropriate. The consistent pore structure supports reliable particle retention across the batch. Labs needing finer retention or quantitative ashless grades should look at other products. The non-fluted discs are not intended for rapid high-volume gravity filtration.

Ready-to-use 100-piece pack

The package supplies 100 pre-cut discs so work can start without cutting sheets to size. Uniform diameter and pore size reduce variability between tests. No additional accessories or software are included with this consumable product. The cellulose material is compatible with standard funnel holders.

How it compares

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

Price $17.99
Cheaper than about 80% 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 size funnel or holder do I need for the 18.5 cm diameter discs?

The discs measure 18.5 cm across, so choose a funnel or filter holder that accepts that diameter.

Will the 11 µm pore size trap the same particles as my old Grade 1 paper?

Yes, this is Grade 1 with an 11 µm pore size, matching the retention of standard Grade 1 qualitative papers.

How can I confirm the paper is flowing at the expected rate after setup?

A steady, even flow with no breakthrough of fine precipitate shows the 11 µm pores are working as intended.

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