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Qualitative Filter Paper, 301 Grade, 55mm -320mm

Qualitative Filter Paper, 301 Grade, 55mm -320mm
Price: £7.34
Stock Availability:

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Stock Availability
On Shelf - Approx. UK delivery date: Thursday the 19th February 2026*
In bulk stock - ships within 10 - 12 Working Days (Excluding weekends and public holidays)
4 to 6 weeks approx. (Not guaranteed)
UK Shipping

Unfortunately, we are not currently accepting orders for Northern Ireland, Jersey and Guernsey.

We can only ship to the following postcodes where a Royal Mail postal option has been chosen at checkout.

AB, DD, DG3, DG4, DG6 - DG9, EH, FK, G, HS, IM, IV, KA, KW, KY, ML, PA, PH, PO30 - PO41, TD, TR21 - TR25, ZE

* We will always try to ship as early as possible. Delivery could be much quicker than stated but is not guaranteed
  • Qualitative Analysis​
  • Biological Products​
  • Water and Soil Analysis​
  • Fine Precipitate Filtration​
  • Clarification

Standard Qualitative Filter Papers are used for low gravity, or quadrant-folded applications. They have a higher level of α- cellulose than other filter papers. This means that they will weaken when the papers are introduced to water. We do not recommend Standard Qualitative Filter Papers if wet handling or vacuum work is necessary. In routine quadrant-folded applications the underlying strength of standard (untreated) grades does not present an issue.

Grade 301: is a very slow-filtering qualitative paper with high efficiency in retaining fine particles. It's commonly used in qualitative analytical techniques to identify materials in biological products, water and soil.

Application: Barium Sulphate, Metastannic Acid, Cuprous Oxide

Key Features

Qualitative Analysis
Ideal for determining and identifying materials in analytical procedures.​

Biological Products
Used in the processing and analysis of biological substances.​

Water and Soil Analysis
Effective in environmental testing to assess water and soil quality.​

Fine Precipitate Filtration
Suitable for filtering fine precipitates like cold-precipitated barium sulfate.​

Clarification
Used to clarify cloudy suspensions and wine, ensuring product clarity.​

Available Grades

GradeWhatman EquivalentSpeedThickness (mm)Pore Size (μM)Weight (g/m²)Filtration Speed (sec*)Burst Strength (kg/cm²)
301 = No.5 Very Slow Filtering 0.14 2-3 84 180 > 0.30
302 = No.3 Medium Filtering 0.3 12-16 150 65 3.90
303 = No.2 Medium Filtering 0.16 5-8 87 50 > 0.10
304 = No.1 Medium Filtering 0.16 5-13 73 88 1.95
305 = No.4 Fast Filtering 0.20 12-15 84 10 > 0.30

Payment Methods

We can also accept a bank transfer (UK Only)

Source Chemicals Ltd