Grade 1 Qualitative Filter Paper Standard Grade, Circle & Sheet

Description

Prepleated qualitative filters are also available, which give improved flow rate and increased loading capacity compared to equivalent flat filters. A widely used standard grade filter paper for routine applications with medium retention and flow rate. It covers a wide range of laboratory applications and is frequently used for clarifying liquids.

Grade 1: 11 µm

The most widely used filter paper for routine applications with medium retention and flow rate. Extended range of sizes includes 10 to 500 mm diameter circles and 460 x 570 mm sheets. This filter is also available in the FilterCup, this is a convenient, disposable 70 mm filter funnel with a 250 ml capacity molded from polypropylene with an integral, heat bonded filter (catalog number 1600-001). This grade covers a wide range of laboratory applications and is frequently used for clarifying liquids. Traditionally the grade is used in qualitative analytical separations for precipitates such as lead sulfate, calcium oxalate (hot), and calcium carbonate. In agriculture, it is used for soil analysis and seed testing procedures. In the food industry, Grade 1 is used for numerous routine techniques to separate solid foodstuffs from associated liquid or extracting liquid and is widely used in education for teaching simple qualitative analytical separations. In air pollution monitoring, using circles or rolls, atmospheric dust is collected from airflow and the stain-intensity measured photometrically. For gas detection, the paper is impregnated with a chromogenic reagent and color formation quantified by optical reflectance.

Parameter	Grade 1 Qualitative Filter Paper Standard Grade, Circle
Grade :	Grade 1
Grade Type :	Standard
Diameter :	10mm, 15mm, 20mm, 25mm, 30mm, 32mm, 42.5mm, 14.5cm, 47mm, 55mm, 70mm, 85mm, 90mm, 110mm, 125mm, 150mm, 185mm, 240mm, 270mm, 320mm, 385mm, 400mm
Typical Particle Retention in Liquid¹ :	11 µm
Nominal Thickness :	180µm
Typical water flow rate² :	57 ml/min
Nominal Basis Weight :	87g/m²
Nominal Air Flow Rate :	13 s/100 ml/in²
Nominal Ash Content³ :	0.06%
Material :	Cellulose
Typical Trace Element Levels :	Aluminium 3.6 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 27.5 µg/g Chromium 1 µg/g Copper 0.9 µg/g Iron 13.7 µg/g Lead less than 0.5 µg/g Magnesium 21 µg/g Manganese less than 0.5 µg/g Mercury less than 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 filter paper for routine applications with medium retention and flow rate. Covers a wide range of laboratory applications and is frequently used for clarifying liquids.
Format :	Circles
Dimensions :	Ø10mm, Ø15mm, Ø20mm, Ø25mm, Ø30mm, Ø32mm, Ø42.5mm, Ø14.5cm, Ø47mm, Ø55mm, Ø70mm, Ø85mm, Ø90mm, Ø110mm, Ø125mm, Ø150mm, Ø185mm, Ø240mm, Ø270mm, Ø320mm, Ø385mm, Ø400mm
Pack Size :	500 pieces(10mm & 15mm), 400 pieces(20mm, 25mm & 30mm), 100 pieces (32mm, 42.5mm, 14.5cm, 47mm, 55mm, 70mm, 85mm, 90mm, 110mm, 125mm, 150mm, 185mm, 240mm, 270mm, 320mm, 385mm & 400mm)

¹Particle retention rating at 98% efficiency.
²For 9 cm diameter
³Ash is determined by ignition of the cellulose filter at 900°C in air.

Parameter	Grade 1 Qualitative Filter Paper Standard Grade, Sheet
Grade :	Grade 1
Grade Type :	Standard
Typical Particle Retention in Liquid¹ :	11 µm
Nominal Thickness :	180µm
Typical water flow rate² :	57 ml/min
Nominal Basis Weight :	87g/m²
Nominal Air Flow Rate :	13 s/100 ml/in²
Nominal Ash Content³ :	0.06%
Material :	Cellulose
Typical Trace Element Levels :	Aluminium 3.6 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 27.5 µg/g Chromium 1 µg/g Copper 0.9 µg/g Iron 13.7 µg/g Lead less than 0.5 µg/g Magnesium 21 µg/g Manganese less than 0.5 µg/g Mercury less than 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 filter paper for routine applications with medium retention and flow rate. Covers a wide range of laboratory applications and is frequently used for clarifying liquids.
Format :	Sheets
Dimensions :	26 x 31mm(1 x 1.23 in), 75 x 100mm(3 x 4 in), 460 x 570mm(18.11 x 22.45 in), 460 x 570mm(18.11 x 22.45 in), 600 x 600mm(23.62 x 23.62 in), 580 x 680mm(22 x 26 in), 580 x 680mm(22 x 26 in)
Pack Size :	26 x 31mm(1000 pieces), 75 x 100mm(500 pieces), 460 x 570mm(100/500 pieces), 600 x 600mm(100 pieces), 580 x 680mm(100 pieces), 580 x 680mm(500 pieces)