Description

Qualitative 20 Micron Filter Paper (QUAL-20UM) | USA Lab

Our Qualitative 20 Micron Filter Paper delivers fast, reliable filtration for everyday laboratory and process needs. With a 20µm particle retention range and an ash content of ≤0.1%, QUAL-20UM is ideal for rapid filtration of biological liquids, organic extracts, culture media, and coarse sediments—without the high cost of specialty filters.

Manufactured from alpha-cellulose and high-quality cotton linters, this smooth, pre-cut qualitative filter paper offers high purity and consistent performance in daily analysis workflows. Choose from a wide selection of diameters and stock up in convenient packs of 100.

Don’t break the bank with expensive filters—get dependable filtering at an affordable price.

Filter paper is not eligible for return/refund. All sales are final.

600mm Filter paper comes in a pack of 200pcs.

Qualitative 20µm Retention Fast Filtration ≤0.1% Ash Content

Particle Retention: 20µm (20–25µm typical pore size range)

Filtration Speed: Fast — optimized for rapid daily analysis

Ash Content: ≤0.1% — low residue for cleaner results

Why buy from USA Lab

Expert Support
Engineers & technicians on staff.

Quality First
Tested and trusted products.

Fast Fulfillment
Nationwide 1-2 day shipping.

Warranty & Parts
US-based service & spares.

Why this qualitative filter paper?

Fast filtration performance — designed for rapid filtration in routine lab and process work.
Coarse particle capture — 20–25µm pore size range helps trap coarse particles and colloidal sediments.
Low ash content — ≤0.1% ash supports cleaner filtration with minimal residue.
High purity materials — manufactured from alpha-cellulose and high-quality cotton linters.
Convenient and cost-effective — pre-cut circles in packs of 100 across many diameters.

Talk to an expert

Get sizing help, compatibility guidance, and ordering support.

Call 734-855-4890

Technical Specifications

Model	Qualitative 20 Micron Filter Paper (QUAL-20UM)
Classification	Qualitative
Particle Retention	20µm (micron)
Grade	BIO-4 \| Whatman Grade 4
Filtration Speed	Fast
Product Appearance	Smooth
Ash Content	≤0.1%
Typical Thickness	172–178µm
Basis Weight	84 g/m²
Wet Burst, mm Water	>120
Quantity	Pack of 100 (600MM is a pack of 200)
Sizes	5 cm, 7 cm, 9 cm, 11 cm, 12.5 cm, 15 cm, 18 cm, 22 cm, 30 cm, 35 cm, 45 cm, 60 cm
Refund Policy	Not Eligible for Return/Refund

Popular Industries & Use Cases

Botanical Extraction Pharmaceutical Chemical Sciences Academic & Research

Business Solutions & Procurement

Programs & Terms

Exclusive options for businesses and academics.

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Documentation & Compliance

Keep purchasing streamlined and compliant.

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Custom Solutions

Tailored tanks, skids, and integration help.

Custom Request Consulting

Talk to Sales

We’ll help spec the right filter size for your setup.

Call 734-855-4890 Email Sales/Support

FAQ

What is QUAL-20UM Qualitative 20 Micron Filter Paper used for?

QUAL-20UM Qualitative 20 Micron Filter Paper is designed for rapid filtration of conventional biological liquids and organic extracts in daily analysis. It is also commonly used for filtering culture media, coarse granules, and colloidal sediments.

What particles can the Qualitative 20 Micron Filter Paper (QUAL-20UM) capture?

The Qualitative 20 Micron Filter Paper (QUAL-20UM) has a typical pore size range of 20–25µm and is intended to trap coarse particles and colloidal deep substances such as iron hydroxide and aluminum hydroxide when fine particle collection is not required.

Is QUAL-20UM Qualitative 20 Micron Filter Paper low-ash?

Yes. QUAL-20UM Qualitative 20 Micron Filter Paper has an ash content of ≤0.1%, helping minimize residue after filtration for cleaner results in routine workflows.

What sizes are available for the Qualitative 20 Micron Filter Paper (QUAL-20UM)?

Qualitative 20 Micron Filter Paper (QUAL-20UM) is available in multiple pre-cut diameters including 5 cm, 7 cm, 9 cm, 11 cm, 12.5 cm, 15 cm, 18 cm, 22 cm, 30 cm, 35 cm, 45 cm, and 60 cm. Each option is supplied in a pack of 100.

Important Shipping Notice!

DISCLAIMER:

All items are carefully packaged to ensure safe delivery. In the rare event that your item arrives damaged, please notify us within 3 days of receipt. We will promptly provide a replacement or issue a refund.

Please note that any damage occurring after delivery is not covered under warranty. We appreciate your understanding and your trust in our products.