Filter Paper Grade No. 540, Quantitative, Ashless, Medium Retention – 11, Part number 1542-055-CY , Buy now from Whatman at Laboratory Disposable Products. Cytivas Whatman Grade 540 is a high-purity, acid-treated cellulose lab filter paper. Mechanically strong Grade 540 is well suited for quantitative or gravimetric analysis of strongly acidic or alkaline samples.

Acid-treated for high wet-strength
Extremely low ash content (0.006 ash maximum)
Nominal particle retention of 8 m
Medium flow rate (Herzberg filtration speed 200 s)
High chemical resistance to strong acid and alkali suspensions

Specifications:
Grade: Grade 540
Type: Hardened Ashless
Typical Particle Retention in Liquid: 8 m
Nominal thickness: 160 m
Typical water flow rate: 97 ml/min
Nominal basis weight: 85 g/m
Nominal air flow rate: 13 s/100 mL/in
Nominal Ash Content: 0.005
Material: High-quality cotton linters
Alpha Cellulose Content Min.: 98
Typical Trace Element Levels: Aluminum 3.4 g/g Antimony <0.5 g/g Arsenic <0.5 g/g Barium <0.5 g/g Boron <1 g/g Calcium 14.7 g/g Chromium 1.1 g/g Copper 8.2 g/g Iron 16.3 g/g Lead <0.5 g/g Magnesium 3.3 g/g Manganese <0.5 g/g Mercury <0.5 g/g Potassium 3.7 g/g Silicon <6 g/g Sodium 17 g/g Zinc 87.8 g/g
Application: Frequently used in the gravimetric analysis of metals in acid/alkali solutions and in collecting hydroxides after precipitation by strong alkalis.

Particle retention rating at 98 efficiency.
For 9 cm diameter
Ash is determined by ignition of the cellulose filter at 900°C in air.
U.S. Sales Only

Whatman Cytiva expertise have enabled advances in science and medicine that have shaped today’s biotechnology industry.

“Whatman” Cytiva at Dawn Scientific provides all types of product With a broad portfolio that includes Whatman filters and membranes, Amersham chromatography columns and resins, tissue culture reagents, and products for sample preparation, blotting, and protein analysis, Whatman Cytiva improved the discovery and manufacture of therapeutics.

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Filter Paper Grade No. 540, Quantitative, Ashless, Medium Retention – 11 | 1540-110 CY | Dawn Scientific