WHA1001185
Whatman® qualitative filter paper, Grade 1
circles, diam. 185 mm, pack of 100
Synonym(s):
Whatman filter, Whatman paper, Z240117, paper filter
About This Item
Recommended Products
material
cellulose filters
circles
packaging
pack of 100
manufacturer/tradename
Whatman 1001-185
Whatman Article No. 28413919 (US reference)
parameter
0.25 psi wet burst
150 sec/100 mL speed (Herzberg)
diam.
185 mm
thickness
180 μm
ash
≤0.06%
pore size
11 μm (Particle retention)
basis weight
87 g/m2
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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
Legal Information
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