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White cellulose filter paper discs 12.5 cm diameter 25 micron pore size pack of 100

Lab Safety Supply Inc

Lab Safety Supply Inc Qualitative Filter Paper 12.5 cm 25 micron PK100

SKU CH-VNK9-JG1HP

Qualitative filter paper, 12.5 cm diameter, 25 micron pore size, pack of 100 discs

  • Product typeGround Fault and Current Leakage Testers
  • Qualitative filtration for gases and liquids
  • 5 cm cellulose discs with 25 micron pores
  • Fast porosity grade 4 for efficient flow
  • 21 mm thick discs meet FDA standards
  • Pack of 100 fluted-free filter papers

Laboratory Filter Paper 12.5 cm

This qualitative filter paper is manufactured from cellulose and supplied as 100 individual discs. Each disc measures 12.5 cm in diameter and features a uniform pore size of 25 micron. The Grade 4 rating indicates fast porosity suitable for general laboratory separations. It is designed for use with both gases and liquids.

Flat Disc Format and Material Properties

The flat disc shape requires no folding or fluting before use, simplifying routine filtration tasks. Cellulose construction provides broad chemical compatibility for standard aqueous and organic solvents. A thickness of 0.21 mm offers mechanical strength while maintaining rapid flow rates. Discs meet FDA standards for regulatory compliance.

Bulk Pack of 100 Discs

The package contains 100 pieces, supporting high-throughput workflows without frequent reordering. Ready-to-use discs eliminate preparation time compared to sheet formats. Consistent pore structure across the batch ensures repeatable results for qualitative analysis. This quantity suits laboratories processing multiple samples daily.

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 pore size does the 12.5 cm Grade 4 filter paper provide?

The discs are rated at a 25 micron minimum and maximum pore size for consistent filtration.

How thick is each 12.5 cm disc and will it fit standard funnels?

Each disc measures 0.21 mm thick and the 12.5 cm diameter matches common laboratory funnel sizes.

How do I use these qualitative filters without tearing the 0.21 mm cellulose?

Pre-wet the disc with the filtrate before pouring the sample so the paper adheres to the funnel and resists rupture.

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