Disc CAA Hazen/PHA Scale 0 - 30 Pt mg/L for use with the Nessleriser 2250
A wide range of test discs containing a series of graded glass filters, which have been pre-calibrated to give direct test readings. The unique feature of Lovibond® test discs is that they incorporate coloured glass filters which are colour stable and not affected by UV light or extreme environmental conditions.