YSI Probe Service Kits for YSI Dissolved Oxygen Probes, For Use With: Replenishing Oxygen sensor on YSI DO Probe, Probe Type: DO, Includes: 1 mil. Teflon cap, electrolyte solution, Membrane Kit
YSI DO Cap Membrane Kit, For Use With: Instrument: 85, 550, and 556 MPS. Probes: 5239, 5905, 5010 and Pro Series Polarographic sensors, Includes: Black Cap Membrane, 1.0 mil, Polytetrafluoroethylene, Probe Type: Oxygen/Temperature, Flow Rat