Whatman Quantitative Filter Papers, Ashless, Grade 44

Whatman Quantitative Filter Papers, Ashless, Grade 44

GE’s Whatman Grade 44 quantitative paper is a thin version of Grade 42 ashless paper. The thinness reduces the overall ash content, making Grade 44 well suited for analyses relying on ash-free dry weight. 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.

Specification
Grade :Grade 44
Format :Circles
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 <0.5 µg/g Arsenic <0.5 µg/g Barium <0.5 µg/g Boron <1 µg/g Calcium 8.3 µg/g Chromium 1.5 µg/g Copper 2 µg/g Iron 12 µg/g Lead <0.5 µg/g Magnesium 4 µg/g Manganese <0.5 µg/g Mercury <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.
Dimensions :Ø 240 mm

Whatman Quantitative Filter Papers, Ashless, Grade 44 Whatman Filter Papers Range of products are mostly available in ready stock and it can delivered immediately throughout india

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