Grade 542 Ashless Fine Precipitate Filter, Circle

Description

High wet-strength
Acid-hardened for resistance to strong acid and alkali solutions
Nominal particle retention rating of 2.7 µm
Herzberg filtration speed of 2510 s
Extremely low ash content (0.006% ash maximum)

Along with Grade 542 cellulose filter paper, the Whatman range of hardened quantitative papers from GE Healthcare’s Life Sciences business includes fast Grade 541and general-purpose Grade 540 filters. All three grades are designed for use in quantitative analysis with strong acid/alkali solutions.

Slow flow rate filters for gravimetric determination

Hardened Grade 542 quantitative papers enable high retention of fine particles in chemically harsh conditions. When acting as a gravimetric filter, this cellulose filter paper is therefore well suited for use in capturing fine precipitates in applications such as metal determinations and hydroxide collection.

Parameter	Grade 542 Ashless Fine Precipitate Filter, Circle
Grade :	Grade 542
Type :	Hardened Ashless
Typical Particle Retention in Liquid¹ :	2.7 µm
Nominal Thickness :	150 µm
Typical water flow rate² :	13 ml/min
Nominal Basis Weight :	96 g/m²
Nominal Air Flow Rate :	64 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 :	Used in gravimetric metal determinations.
Format & Dimensions :	Circle – Ø55 mm, Ø70 mm, Ø90 mm, Ø110 mm, Ø125 mm, Ø150 mm, Ø185 mm, Ø240 mm, Ø400 mm
Pack Size :	100 pieces