This filter paper is stained with a sulphured colouring and is used to reveal the particles of bright colours such as fluorine, silicon detection, mycelium in cultivated mushrooms, etc...
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|Thickness (mm)||Filtration speed (sec)|
ø 55 mm
ø 270 mm
FS98A0150 (plain disc of black filter, grade FS98, diameter 150 mm)
Other sizes upon request