Whatman Quantitative Filter Papers / Kertas Saring Grade 41

Whatman Quantitative Filter Papers / Kertas Saring Grade 41 Alat Laboratorium Umum Specification Parameter Grade 41 Fast Ashless Filter Paper Grade Grade 41 Type Ashless Typical Particle Retention in Liquid1 20µm Nominal thickness 215 µm Typical water flow rate2 254 ml/min Nominal basis weight 85 g/m² Nominal air flow rate 4 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. For analytical procedures involving coarse particles or gelatinous precipitates (e.g., iron or aluminum hydroxides). Also used in quantitative air pollution analysis as a paper tape for impregnation when determining gaseous compounds at high flow rates. 1441-125 Grade 41 Fast Ashless Filter Paper, 125 mm circle (100 pcs) 1441-110 Grade 41 Fast Ashless Filter Paper, 110 mm circle (100 pcs) 1441-090 Grade 41 Fast Ashless Filter Paper, 90 mm circle (100 pcs) 1441-320 Grade 41 Fast Ashless Filter Paper, 320 mm circle (100 pcs) 1441-240 Grade 41 Fast Ashless Filter Paper, 240 mm circle (100 pcs) 1441-185 Grade 41 Fast Ashless Filter Paper, 185 mm circle (100 pcs) 1441-150 Grade 41 Fast Ashless Filter Paper, 150 mm circle (100 pcs) 1441-917 Grade 41 Fast Ashless Filter Paper,460 × 570 mm sheet (100 pcs) 1441-866 Grade 41 Fast Ashless Filter Paper, 203 × 254 mm sheet (100 pcs) 1441-070 Grade 41 Fast Ashless Filter Paper, 70 mm circle (100 pcs) 1441-060 Grade 41 Fast Ashless Filter Paper, 60 mm circle (100 pcs) 1441-055 Grade 41 Fast Ashless Filter Paper, 55 mm circle (100 pcs) 1441-050 Grade 41 Fast Ashless Filter Paper, 50 mm circle (100 pcs) 1441-047 Grade 41 Fast Ashless Filter Paper, 47 mm circle (100 pcs) 1441-042 Grade 41 Fast Ashless Filter Paper, 42.5 mm circle (100 pcs) 1441-6309 Grade 41 Fast Ashless Filter Paper, 25 mm circle (10,000 pcs) 14416761 Grade 41 Fast Ashless Filter Paper, 55 mm (10000 pcs 14418296 Grade 41 Fast Ashless Filter Paper, 32 mm (100 pcs)