Pair Nessler-tubes, 150 mm with dipping journal, AF306/P

Nessler cylinder AF306P, 113 mm: For use with the Nessleriser 2150 for the measurement of the Pt-Co/Hazen colour discs NSH (10-90 mg Pt/l) and NSB (70-250 mg Pt/l) and NSX (50-300 mg Pt/l).
Nessler cylinder DB420, 250 mm: For use with the Nessleriser 2250 for the measurement of the Pt-Co/Hazen colour discs CAA (0-30 mg Pt/l) and CAB (30-70 mg Pt/l).