Filter paper Grade: 40, 12.7 mm

Filter paper Grade: 40, 12.7 mm

Product Details:


Price And Quantity

  • 2440 INR
  • 1 Unit

Trade Information

  • Udaipur
  • 100 Unit Unit Per Month
  • 15 Days
  • Asia, Australia, Central America, North America, South America, Eastern Europe, Western Europe, Middle East, Africa
  • All India

Product Description

Filter paper Grade: 40, 12.7 mm:Whatman Grade 40 high-purity filters from GE Healthcares Life Sciences business are general-purpose papers for quantitative analysis. Grade 40 filters are suitable for a variety of analytical filtration applications.

High-purity filters contain 0.007% maximum ash content

  • Medium nominal particle retention rating of 8 micro-m
  • Medium filtration speed (Herzberg 340 s)
  • Particularly useful for gravimetric analysis

GE offers a range of Whatman ashless filter paper for your gravimetric analysis needs. See our other ashless grades to find the right filter for your sample, or use our hardened ashless grades if your analysis involves strong acid/alkali suspensions.

Applications for high-purity Grade 40 filters

High-purity filters support accurate analysis in applications sensitive to very low levels of background contamination and in a gravimetric analysis where ash content might affect weight measurements of combusted samples. GEs high-purity Whatman Grade 40 ashless paper is suited to:

  • Soil analysis, when separating solid matter from aqueous extracts
  • Quantitative determination of milk sediment
  • Use as a clean-up filter for solutions prior to atomic absorption (AA) spectrometry
  • Analysis of constituent components in cement, clays, iron, and steel products
  • Collection of trace elements and radionuclides from the atmosphere

Looking for a filter paper, membrane filter, or syringe filter? Let GE help you find the optimal filter for your needs to ensure reliable analysis.

Product Specification:


Grade 40 Ashless Filter Paper for Pollution Analysis, 12.7 mm circle (400 pcs)


Grade 40





Typical Particle Retention in Liquid1

8 micro-m

Nominal Thickness

210 micro-m

Typical water flow rate2

25 ml/min

Nominal Basis Weight

95 g/m2

Nominal Air Flow Rate

21 s/100 mL/in2

Nominal Ash Content3



High-quality cotton linters

Alpha Cellulose Content Min.


Typical Trace Element Levels

Aluminium 2.5 micro-g/g Antimony <0.5 micro-g/g Arsenic <0.5 micro-g/g Barium <0.5 micro-g/g Boron <1 micro-g/g

Calcium 8.3 micro-g/g Chromium 1.5 micro-g/g Copper 2 micro-g/g Iron 12 micro-g/g

Lead <0.5 micro-g/g Magnesium 4 micro-g/g Manganese <0.5 micro-g/g

Mercury <0.5 micro-g/g Potassium 2.3 micro-g/g Silicon 6.2 micro-g/g Sodium 16.8 micro-g/g Zinc 64.5 micro-g/g


Designed for gravimetric analysis and the preparation of samples for instrumental analysis.

Gravimetric analysis for numerous components in cement, clays, iron, and steel products. As a primary filter for separating solid matter from aqueous extracts in general soil analysis. Quantitative determination of sediments in milk and as a pure analytical grade clean-up filter for solutions prior to AA spectrometry. Also used as a high-purity filter in the collection of trace elements and radionuclides from the atmosphere.


12.7 mm

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