HI 76409A/P Membranes for DO Probes When the PTFE (PolyTetraFluoro-Ethylene) membrane of the protective cap wears, it is always good to have a back-up. Contains 5 ready-to-use, replacement membranes for HI 76409 DO probe series. Read More »

HI 76407A/P Membranes for DO Probes When the PTFE membrane of the protective cap wears, it is always good to have a back-up. This kit contains 5 ready-to-use replacement PTFE (PolyTetraFluoro-Ethylene) membranes for the HI 76407 DO probe series. Read More »