Promotional price valid on web orders only. Your contract pricing may differ. Interested in signing up for a dedicated account number?
Learn More
  1. Home
  2. Products
  3. Filters and Filtration
  4. Filter Paper
  5. Cytiva Whatman™ Quantitative Filter Paper: Grade 40 Circles

Cytiva Whatman™ Quantitative Filter Paper: Grade 40 Circles

Catalog No. 09927899 Shop All Cytiva Products
Change view
Click to view available options
Diameter (Metric):
12.7 mm
30 mm
32 mm
42.5 mm
47 mm
55 mm
70 mm
90 mm
110 mm
125 mm
150 mm
185 mm
240 mm
320 mm
450 mm
15 product options available for selection
Product selection table with 15 available options. Use arrow keys to navigate and Enter or Space to select.
Catalog No. Diameter (Metric)
09-927-899 450 mm
09-927-541 12.7 mm
09-845-I 32 mm
09-845H 42.5 mm
09-800-969 47 mm
09-845A 55 mm
09-845B 70 mm
09-845C 90 mm
09-845D 110 mm
09-845E 125 mm
09-845F 150 mm
09-845G 185 mm
09-845K 240 mm
09-845M 320 mm
09-845J 30 mm
Use arrow keys to navigate between rows. Press Enter or Space to select a product option. 15 options available.
15 options
Catalog No. 09-927-899 Supplier Cytiva Supplier No. 14406168
Only null left
Add to Cart
Add to Cart

Description

Supports accurate analysis in applications sensitive to very low levels of background contamination. Whatman™ Quantitative Filter Paper: Grade 40 Circles are additionally useful in gravimetric analysis where ash content might affect weight measurements of combusted samples.

Ashless grades are very pure filters suitable for a wide range of critical analytical filtration procedures. Whatman™ quantitative filter papers are designed for gravimetric analysis and the preparation of samples for instrumental analysis.
  • High-purity filters for quantitative analysis
  • Contain 0.007% maximum ash content
  • Medium nominal particle retention rating of 8μm
  • Medium filtration speed (Herzberg 340 sec.)

Suited for
  • 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
TRUSTED_SUSTAINABILITY

Specifications

Airflow Rate 21 s/100 mL/in2
Description Grade 40 Ashless Filter Paper for Pollution Analysis, 450 mm circle (100 pcs)
Filter Type Ashless
Format Disc
Material Cotton Linters
Particle Retention 8 μm
Pore Size 8 μm
Filtration Speed ASTM, 75 seconds; Herzberg, 340 seconds
Flow Rate Medium
For Use With (Application) 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
Grade Grade 40
Porosity Medium
Quantity 100 Pk.
Thickness (Metric) 210 μm
Type Quantitative Filter Paper
Diameter (Metric) 450 mm
Show More Show Less
Product Title
Select an issue

By clicking Submit, you acknowledge that you may be contacted by Fisher Scientific in regards to the feedback you have provided in this form. We will not share your information for any other purposes. All contact information provided shall also be maintained in accordance with our Privacy Policy.