- WHA1001325
WHA1001325
Whatman® qualitative filter paper, Grade 1
circles, diam. 25 mm, pack of 100
Recommended Products
material
cellulose filters
circles
packaging
pack of 100
manufacturer/tradename
Whatman 1001-325
Whatman Article No. 28413923 (US reference)
parameter
0.25 psi wet burst
150 sec/100 mL speed (Herzberg)
diam.
25 mm
thickness
180 μm
ash
≤0.06%
pore size
11 μm (Particle retention)
basis weight
87 g/m2
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This Item | WHA1001125 | WHA1001125 | WHA1001085 |
|---|---|---|---|
| material cellulose filters, circles | material cellulose filters, circles | material cellulose filters, circles | material cellulose filters, circles |
| packaging pack of 100 | packaging pack of 100 | packaging pack of 100 | packaging pack of 100 |
| manufacturer/tradename Whatman 1001-325, Whatman Article No. 28413923 (US reference) | manufacturer/tradename Whatman 1001-125, Whatman Article No. 28413917 (US reference) | manufacturer/tradename Whatman 1001-125, Whatman Article No. 28413917 (US reference) | manufacturer/tradename Whatman 1001-085, Whatman Article No. 28413913 (US reference) |
| parameter 0.25 psi wet burst, 150 sec/100 mL speed (Herzberg) | parameter 0.25 psi wet burst, 150 sec/100 mL speed (Herzberg) | parameter 0.25 psi wet burst, 150 sec/100 mL speed (Herzberg) | parameter 0.25 psi wet burst, 150 sec/100 mL speed (Herzberg) |
| diam. 25 mm | diam. 125 mm | diam. 125 mm | diam. 85 mm |
| pore size 11 μm (Particle retention) | pore size 11 μm (Particle retention) | pore size 11 μm (Particle retention) | pore size 11 μm (Particle retention) |
General description
Grade 1: 11 μm (medium flow filter paper)
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 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.
Other Notes
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