Whatman Quantitative Filter Papers, Ashless, Grade 42 Cat. 1442-090

Whatman Quantitative Filter Papers, Ashless, Grade 42 Cat. 1442-090 Parameter Grade 42 Ashless Filter Paper for Instrumental Analysis, 42.5 mm circle (100 pcs) Grade Grade 42 Format Circles Type Ashless Typical Particle Retention in Liquid 1 2.5 µm Nominal thickness 200 µm Typical water flow rate 2 5 ml/min Nominal basis weight 100 g/m² Nominal air flow rate 96 s/100 mL/in² Nominal Ash Content 3 0.007% Material High-quality cotton linters Alpha Cellulose Content Min. ≥98% Typical Trace Element Levels Aluminium 2.5 µg/g Antimony lt;0.5 µg/g Arsenic lt;0.5 µg/g Barium lt;0.5 µg/g Boron lt;1 µg/g Calcium 8.3 µg/g Chromium 1.5 µg/g Copper 2 µg/g Iron 12 µg/g Lead lt;0.5 µg/g Magnesium 4 µg/g Manganese lt;0.5 µg/g Mercury lt;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. For critical gravimetric analysis with the finest particle retention. Dimensions Ø 42.5 mm Nb : Mohon tanya stock sebelum diorder