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303

What is Grade 303?

This grade has a larger pore size than Grade 301, but with a lower filtration speed. Grade 303 also has higher absorption than Grade 301 is it used in general laboratory applications. Grade 303 is also found in agricultural and environmental laboratories for plant growth trials, soil testing and air analysis for monitoring specific contaminants and in the filtration of organic and sulfide precipitates.

Properties
Whatman Cross Reference = No.2
Speed class Medium Filtering
Thickness (mm) 0.16
Pore size (μM) 5-8
Weight (g/m²) 87
Filtration Speed (sec*) 50
Burst Strength (Kg/cm²) > 0.10
*According to DIN 53137
Available Sizes
Diameter (mm) Product Code
55 303055
70 303070
90 303090
110 303110
125 303125
150 303150
185 303185
240 303240
300 303300
320 303320