Lovibond® MD 100 Chlorine Duo (Free & Total) Colorimeter, with 0.02 - 2.0 mg/l and 0.1 - 8.0 mg/l Cl2 DPD Reagent (each) The MD 100 uses high quality interference filters with long-life LEDs as a light source without any moving parts in a transparent sam (1 per EA)
Lovibond® MD 100 Chlorine Duo (Free & Total) Colorimeter, with 0.02 - 2.0 mg/l and 0.1 - 8.0 mg/l Cl2 DPD Reagent (each) The MD 100 uses high quality interference filters with long-life LEDs as a light source without any moving parts in a transparent sam