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White cellulose filter paper disc 15 cm diameter grade 40 pack 100

Lab Safety Supply Inc

Lab Safety Supply Inc 12K914 Quantitative Filter Paper 15.0 cm 8 µm Grade 40 PK100

SKU CH-T4KQ-NAWWC

Quantitative cellulose filter discs, 15 cm diameter and 8 µm pore size, grade 40, pack of 100

  • Product typeGround Fault and Current Leakage Testers
  • 15 cm diameter fits standard funnels for routine filtration
  • 8 µm pore size retains fine particles during quantitative analysis
  • Grade 40 cellulose meets FDA standards for lab use
  • 2 mm thickness provides consistent flow rates
  • Pack of 100 discs supports high-volume testing

Quantitative Filter Paper Grade 40

This quantitative filter paper is manufactured from cellulose and supplied as 100 discs of 15.0 cm diameter. It is intended for gravimetric analysis of gases and liquids in laboratory and field-testing workflows where consistent pore structure is required.

Medium porosity with 8 µm pore size

Each disc is 0.2 mm thick with a uniform 8 µm pore size and medium porosity. The flat, non-fluted shape allows repeatable flow rates and particle retention during vacuum or gravity filtration without the variability introduced by pleats.

Replaces inconsistent filter media

The pack upgrades from mixed-grade or uncertified papers that can skew residue mass measurements. The jump is worth it when analytical procedures demand FDA-listed Grade 40 performance and batch-to-batch repeatability for quantitative results.

How it compares

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

Price $18.99
Cheaper than about 79% 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 pore size does the 8 µm Grade 40 filter paper provide?

The paper has a minimum and maximum pore size of 8 µm, giving a uniform 8 µm rating for quantitative analysis.

What diameter funnel or holder fits the 15.0 cm discs?

Each disc measures 15.0 cm in diameter, so it fits standard 15 cm filter funnels or clamping rings.

How do I pre-wet the cellulose discs before vacuum filtration?

Place a disc in the funnel, apply a few millilitres of solvent to wet the 0.2 mm thick cellulose fully, then start vacuum to seal the paper.

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