Grade 44 Ashless Filter Paper for Inorganic Analysis, Circle

Description

Accurate ash free dry mass measurements
Fine nominal particle retention rating of 3 µm
Filtration speed (Herzberg 995 s)
Typical thickness of 180 µm

GE Healthcare’s Life Sciences business offers other ashless grades with different particle retention ratings, as well as hardened ashless grades to ensure accurate measurement during analyses of samples that are strongly acidic/alkali.

Fast gravimetric analysis of fine particles

Gravimetric analysis can be time-consuming when filtration of fine particles is required. Because of its reduced thickness, Grade 44 ashless filter paper from GE provides faster filtration of fine particles when compared with thicker papers of similar retention rating, such as Whatman Grade 42 paper.

Parameter	Grade 44 Ashless Filter Paper, Thin, Circle
Grade :	Grade 44
Grade Type :	Ashless
Typical Particle Retention in Liquid¹ :	3 µm
Nominal Thickness :	176 µm
Typical water flow rate² :	11 ml/min
Nominal Basis Weight :	80 g/m²
Nominal Air Flow Rate :	56 s/100 mL/in²
Nominal Ash Content³:	0.007%
Material :	High-quality cotton linters
Alpha Cellulose Content Min. :	≥98%
Typical Trace Element Levels:	Aluminium 2.5 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 8.3 µg/g Chromium 1.5 µg/g Copper 2 µg/g Iron 12 µg/g Lead less than 0.5 µg/g Magnesium 4 µg/g Manganese less than 0.5 µg/g Mercury less than 0.5 µg/g Potassium 2.3 µg/g Silicon 6.2 µg/g Sodium 16.8 µg/g Zinc 64.5 µg/g
Application :	Designed for gravimetric analysis and the preparation of samples for instrumental analysis.
Format & Dimensions :	Circle – Ø70 mm, Ø90 mm, Ø110 mm, Ø125 mm, Ø150 mm, Ø185 mm, Ø240 mm
Pack Size :	100 piece