Grade 40 Ashless Filter Paper 150 mm

Whatman Grade 40 high-purity filters are general-purpose papers for quantitative analysis. Grade 40 filters are suitable for a variety of analytical filtration applications.

Manufacturer: Whatman

Industries: Pharma , FMCG , Academia , Forensics , Environment , Agriculture , Cement & Mining

Product Code: 1440-150

GST: 18.00 %

Catalog Number: 1440-150

HSN Code: 48232000

Packaging: 100 Circles

UOM: Pack

Delivery date: 3-5 days

₹ 6,780.00

Qty:

These filter papers are designed for gravimetric analysis and the preparation of samples for instrumental analysis. Gravimetric analysis for numerous components in cements, 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.

High-purity filters contain 0.007% maximum ash content
Medium nominal particle retention rating of 8 µm
Medium filtration speed (Herzberg 340 s)
Particularly useful for gravimetric analysis

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 gravimetric analysis where ash content might affect weight measurements of combusted samples. 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 cements, clays, iron, and steel products
Collection of trace elements and radionuclides from the atmosphere.

Specification:

Parameter	Grade 40 Ashless Filter Paper for Pollution Analysis, 150 mm circle (100 pcs)
Grade	Grade 40
Format	Circles
Type	Ashless
Typical Particle Retention in Liquid¹	8 µm
Nominal Thickness	210 µm
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	0.007%
Material	High-quality cotton linters
Alpha Cellulose Content Min.	≥98%
Typical Trace Element Levels	Aluminium 2.5 µg/g Antimony <0.5 µg/g Arsenic <0.5 µg/g Barium <0.5 µg/g Boron <1 µg/g Calcium 8.3 µg/g Chromium 1.5 µg/g Copper 2 µg/g Iron 12 µg/g Lead <0.5 µg/g Magnesium 4 µg/g Manganese <0.5 µg/g Mercury <0.5 µg/g Potassium 2.3 µg/g Silicon 6.2 µg/g Sodium 16.8 µg/g Zinc 64.5 µg/g
Dimensions	Ø 150 mm

¹Particle retention rating at 98% efficiency.

²For 9 cm diameter

³Ash is determined by ignition of the cellulose filter at 900°C in air.

Product tags

ashless (4)
,
grade 40 (4)
,
quantitative (3)
,
filter paper (10)

Grade 40 Ashless Filter Paper 150 mm

Applications for high-purity Grade 40 filters

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