CYT28417991 - Cytiva - Filters and Filtration - Chromatography - Lab supplies

: Catalog No. CYT28417991

Part No. 28417991
Supplier Cytiva

Grade 40 Ashless Filter Paper for Pollution Analysis, 70 mm circle (100 pcs)

Net Price

43.5

Availability

4 weeks

PROPERTIES

Format

Circles
Dimensions

Ø 12.7 mm
Material

High-quality cotton linters
Application

Designed for gravimetric analysis and the preparation of samples for instrumental analysis.\nGravimetric analysis for numerous components in cements, clays, iron, and steel products.\nAs a primary filter for separating solid matter from aqueous extracts in general soil analysis. \nQuantitative determination of sediments in milk and as a pure analytical grade clean-up filter for solutions prior to AA spectrometry.\nAlso used as a high-purity filter in the collection of trace elements and radionuclides from the atmosphere.
Grade

Grade 40
Type

Ashless
Typical Particle Retention in Liquid

8 µm
Nominal thickness

210
Typical water flow rate

25 ml/min
Nominal basis weight

95
Nominal air flow rate

21 s/100 mL/in²
Nominal Ash Content

0.007%
Alpha Cellulose Content Min.

≥98%

DESCRIPTION

Whatman Grade 40 high-purity filters from Cytiva's 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 µm Medium filtration speed (Herzberg 340 s) Particularly useful for gravimetric analysis Cytiva 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 filtersHigh-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. Cytiva's high-purity Whatman Grade 40 ashless paper is suited to: Soil analysis, when separating solid matter from aqueous extractsQuantitative determination of milk sedimentUse as a clean-up filter for solutions prior to atomic absorption (AA) spectrometryAnalysis of constituent components in cements, clays, iron, and steel productsCollection of trace elements and radionuclides from the atmosphereLooking for a filter paper, membrane filter, or syringe filter? Let Cytiva help you find the optimal filter for your needs to ensure reliable analysis.