Grade 541 Quantitative Filter Paper Hardened Ashless, Circle & Sheet

Description

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

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

Gelatinous precipitate retention

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

Parameter	Grade 541 Quantitative Filter Paper Hardened Ashless, Circle & Sheet
Grade :	Grade 541
Type :	Hardened Ashless
Typical Particle Retention in Liquid¹ :	22 µm
Nominal Thickness :	155 µm
Typical water flow rate2 :	359 ml/min
Nominal Basis Weight :	78 g/m²
Nominal Air Flow Rate :	3 s/100 mL/in²
Nominal Ash Content³ :	0.005%
Material :	High-quality cotton linters
Alpha Cellulose Content Min. :	≥98%
Typical Trace Element Levels:	Aluminium 3.4 µg/g Antimony less than 0.5 µg/g Arsenic less than 0.5 µg/g Barium less than 0.5 µg/g Boron less than 1 µg/g Calcium 14.7 µg/g Chromium 1.1 µg/g Copper 8.2 µg/g Iron 16.3 µg/g lead less than 0.5 µg/g Magnesium 3.3 µg/g Manganese less than 0.5 µg/g Mercury less than 0.5 µg/g Potassium 3.7 µg/g Silicon less than 6 µg/g Sodium 17 µg/g Zinc 87.8 µg/g
Application :	Typical applications include fiber in animal foodstuffs, gelatin in milk and cream, chloride in cement, and chloride and phosphorous in coal and coke.
Format & Dimensions :	Circle – Ø42.5 mm, Ø47 mm, Ø55 mm, Ø70 mm, Ø90 mm, Ø110 mm, Ø125 mm, Ø150 mm, Ø185 mm, Ø240 mm, Ø270 mm, Ø320 mm, Ø400 mm, Sheet – 460 x 570 mm
Pack Size :	100 pieces