WHA1541070

Whatman^® quantitative filter paper, hardened ashless, Grade 541

circles, diam. 70 mm, pack of 100

• Synonym(s): Whatman filter, Z241652, filter papers, paper filter
• UNSPSC Code: 41104900
• NACRES: NB.24

Properties

• material: circles ; cotton filters (high-quality cotton linters)
• packaging: pack of 100
• manufacturer/tradename: Whatman 1541-070; Whatman Article No. 28418233 (US reference)
• parameter: 34 sec/100 mL speed (Herzberg); 7 psi wet burst
• diam.: 70 mm
• thickness: 155 μm
• ash: ≤0.006%
• pore size: 22 μm (Particle retention)
• basis weight: 82 g/m²

Description

General description

Cytiva′s Whatman Grade 541 acid hardened cellulose filter paper features high wet-strength, high chemical resistance, and a large nominal particle retention for fast analytical filtration.

Along with fast Grade 541 filter paper, the hardened, ashless range from Cytiva′s business includes general-purpose Grade 540 and Grade 542 for fine particle retention. All three paper grades are appropriate for use in gravimetric analysis with strong acids and alkali samples.

Application

Hardened ashless filter paper is recommended when fast filtration of a gelatinous precipitate for gravimetric analysis is performed on a strongly acidic or alkali solution. Applications of Grade 541 papers include:

• Use as an animal foodstuff filter for determining fiber content
• Determination of gelatin content in milk and cream
• Quantification of chloride in cement, as well as chloride and phosphorous in coal and coke

Features and Benefits

• High wet-strength
• High chemical resistance to strong acid and alkali suspensions
• Retention of gelatinous precipitate
• 22 µm nominal particle retention rating
• Fast flow rate (Herzberg filtration speed 34 s)
• Maximum of 0.006% ash concentration

Other Notes

Field of Use : For internal research use only. Products are not intended for diagnostic use or resale.

Legal Information

Whatman is a registered trademark of Cytiva