Grade 4 Qualitative Filter Papers

Opis produktu

A standard grade filter used when high flow rates in air pollution monitoring are required and the collection of fine particles is not critical.

These cellulose filters are used in qualitative analytical techniques to determine and identify materials. Prepleated qualitative filters are also available, which give improved flow rate and increased loading capacity compared to equivalent flat filters.

Grade 4: 25 µm
Extremely fast filtering with excellent retention of coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide. Very useful as a rapid filter for routine clean-up of biological fluids or organic extracts during analysis. Used when high flow rates in air pollution monitoring are required and the collection of fine particles is not critical.

Specyfikacja

Grade	Grade 4
Grade Type	Standard
Diameter	270 mm
Typical Particle Retention in Liquid	25 µm
Nominal Thickness	210 µm
Typical water flow rate	247 ml/min
Nominal Basis Weight	92 g/m²
Nominal Air Flow Rate	4 s/100 ml/in²
Nominal Ash Content	0.06%
Material	Cellulose
Typical Trace Element Levels	Aluminium 3.6 µg/g Antimony <0.5 µg/g Arsenic <0.5 µg/g Barium <0.5 µg/g Boron <1 µg/g Calcium 27.5 µg/g Chromium 1 µg/g Copper 0.9 µg/g Iron 13.7 µg/g Lead <0.5 µg/g Magnesium 21 µg/g Manganese <0.5 µg/g Mercury <0.5 µg/g Potassium 6.2 µg/g Silicon 8.8 µg/g Sodium 32.3 µg/g Zinc 58.3 µg/g
Application	Used when high flow rates in air pollution monitoring are required and the collection of fine particles is not critical.

Informacje do zamówienia

Nr kat.	Opis produktu	Format	Rozmiar
1004-027	Grade 4 Qualitative Filter Paper Standard Grade, circle, 27 mm	Circles	27 mm
1004-042	Grade 4 Qualitative Filter Paper Standard Grade, circle, 42,5 mm	Circles	42,5 mm
1004-047	Grade 4 Qualitative Filter Paper Standard Grade, circle, 47 mm	Circles	47 mm
1004-050	Grade 4 Qualitative Filter Paper Standard Grade, circle, 50 mm	Circles	50 mm
1004-055	Grade 4 Qualitative Filter Paper Standard Grade, circle, 55 mm	Circles	55 mm
1004-070	Grade 4 Qualitative Filter Paper Standard Grade, circle, 70 mm	Circles	70 mm
1004-090	Grade 4 Qualitative Filter Paper Standard Grade, circle, 90 mm	Circles	90 mm
1004-110	Grade 4 Qualitative Filter Paper Standard Grade, circle, 110 mm	Circles	110 mm
1004-125	Grade 4 Qualitative Filter Paper Standard Grade, circle, 125 mm	Circles	125 mm
1004-150	Grade 4 Qualitative Filter Paper Standard Grade, circle, 150 mm	Circles	150 mm
1004-185	Grade 4 Qualitative Filter Paper Standard Grade, circle, 185 mm	Circles	185 mm
1004-240	Grade 4 Qualitative Filter Paper Standard Grade, circle, 240 mm	Circles	240 mm
1004-270	Grade 4 Qualitative Filter Paper Standard Grade, circle, 270 mm	Circles	270 mm
1004-320	Grade 4 Qualitative Filter Paper Standard Grade, circle, 320 mm	Circles	320 mm
1004-400	Grade 4 Qualitative Filter Paper Standard Grade, circle, 400 mm	Circles	400 mm
1004-648	Grade 4 Qualitative Filter Paper Standard Grade, roll, 38 x 114 mm	Roll	38 x 114 mm
1004-917	Grade 4 Qualitative Filter Paper Standard Grade, sheet, 460 x 570 mm	Sheets	460 x 570 mm (18,11 x 22,45 in)
1004-930	Grade 4 Qualitative Filter Paper Standard Grade, sheet, 580 x 580 mm	Sheets	580 x 580 mm (23 x 23 in)
1004-041	Grade 4 Qualitative Filter Paper Standard Grade, 41 mm	Circles	41 mm

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1004-027;Grade 4 Qualitative Filter Paper Standard Grade, circle, 27 mm;Circles;27 mm
1004-042;Grade 4 Qualitative Filter Paper Standard Grade, circle, 42,5 mm;Circles;42,5 mm
1004-047;Grade 4 Qualitative Filter Paper Standard Grade, circle, 47 mm;Circles;47 mm
1004-050;Grade 4 Qualitative Filter Paper Standard Grade, circle, 50 mm;Circles;50 mm
1004-055;Grade 4 Qualitative Filter Paper Standard Grade, circle, 55 mm;Circles;55 mm
1004-070;Grade 4 Qualitative Filter Paper Standard Grade, circle, 70 mm;Circles;70 mm
1004-090;Grade 4 Qualitative Filter Paper Standard Grade, circle, 90 mm;Circles;90 mm
1004-110;Grade 4 Qualitative Filter Paper Standard Grade, circle, 110 mm;Circles;110 mm
1004-125;Grade 4 Qualitative Filter Paper Standard Grade, circle, 125 mm;Circles;125 mm
1004-150;Grade 4 Qualitative Filter Paper Standard Grade, circle, 150 mm;Circles;150 mm
1004-185;Grade 4 Qualitative Filter Paper Standard Grade, circle, 185 mm;Circles;185 mm
1004-240;Grade 4 Qualitative Filter Paper Standard Grade, circle, 240 mm;Circles;240 mm
1004-270;Grade 4 Qualitative Filter Paper Standard Grade, circle, 270 mm;Circles;270 mm
1004-320;Grade 4 Qualitative Filter Paper Standard Grade, circle, 320 mm;Circles;320 mm
1004-400;Grade 4 Qualitative Filter Paper Standard Grade, circle, 400 mm;Circles;400 mm
1004-648;Grade 4 Qualitative Filter Paper Standard Grade, roll, 38 x 114 mm;Roll;38 x 114 mm
1004-917;Grade 4 Qualitative Filter Paper Standard Grade, sheet, 460 x 570 mm;Sheets;460 x 570 mm (18,11 x 22,45 in)
1004-930;Grade 4 Qualitative Filter Paper Standard Grade, sheet, 580 x 580 mm;Sheets;580 x 580 mm (23 x 23 in)
1004-041;Grade 4 Qualitative Filter Paper Standard Grade, 41 mm;Circles;41 mm