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Grade 42 Ashless Filter Paper - 125 mm

With the finest retention of all Whatman ashless filter paper grades, Grade 42 is designed for gravimetric analysis and sample preparation for instrumental analysis.
Manufacturer: Whatman
Product Code: 1442-125
GST: 18.00 %
Catalog Number: 1442-125
HSN Code: 48232000
Packaging: 100 circles
UOM: Pack
Delivery date: Within 15 Days
₹ 3,810.00

Our high-purity Whatman ashless Grade 42 quantitative filter papers are suitable for a wide range of critical analytical filtration procedures for quantitative analysis. Grade 42 filter papers have the finest retention of all Whatman ashless filter paper grades. Grade 42 is designed for gravimetric analysis and sample preparation for instrumental analysis.

  • Ashless: 0.007% ash maximum
  • Fine (2.5 μm) nominal particle retention rating, eliminates large particles that might otherwise interfere with sensitive instrumentation
  • Herzberg filtration speed of 1870 s
  • Commonly used as a calcium carbonate filter
  • Particularly suitable for gravimetric analysis

Whatman ashless quantitative filter papers are high-purity filters that 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 ashless filter papers are suited for:

  • Environmental analysis: soil filtration analysis, when separating solid matter from aqueous extracts
  • Retention of small particles
  • Collection of trace elements and radionuclides from the atmosphere

Specification:

Parameter

Grade 42 Ashless Filter Paper for Instrumental Analysis, 125 mm circle (100 pcs)

Grade

Grade 42

Format

Circles

Type

Ashless

Typical Particle Retention in Liquid1

2.5 µm

Nominal Thickness

200 µm

Typical water flow rate2

5 ml/min

Nominal Basis Weight

100 g/m²

Nominal Air Flow Rate

96 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

Application

Designed for gravimetric analysis and the preparation of samples for instrumental analysis. For critical gravimetric analysis with the finest particle retention.

Dimensions

Ø 125 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.

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