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This is Grade 5 qualitative filter paper equivalent to Whatman No.5, 100mm diameter circles, sold bo..

This is Grade 5 qualitative filter paper equivalent to Whatman No.5, 150mm diameter circles, sold bo..

This is Grade 5 qualitative filter paper equivalent to Whatman No.5, 270mm diameter circles with a 3..

This is Grade 5 qualitative filter paper equivalent to Whatman No.5, 400mm diameter circles, sold bo..

This is Grade 54 qualitative filter paper equivalent to Whatman No.54, 400mm diameter circles, sold ..

This is Grade 5 qualitative filter paper equivalent to Whatman No.5, 450mm diameter circles, sold bo..

This is Whatman No.1 equivalent qualitative filter paper for CBR testing, 150mm diameter circles, su..

This is the same Grade 5 fine qualitative filter paper as the 150mm version, sized down to 110mm dia..

This is Grade 5 qualitative cellulose filter paper, 150mm diameter circles, offering fine particle r..

A pack of coarse-grade circular filter papers, 150mm diameter, placed between the soil specimen and ..