Horiba LAQUA WQ-300 Series Sensor Heads, Cartridges & Accessories Item:300-I-2 - Ion Sensor Head, 2 m Cable - 3200812203 making it a low-cost option

making it a low-cost option for personal gas monitoring at scale

Replacement sensor caps

Replace the membrane if the electrode is slow to reach a stable reading

OCMA-550 product page at HORIBA

Every parameter appears on screen at once

Horiba LAQUA WQ-300 Series Sensor Heads, Cartridges & Accessories Item:300-I-2 - Ion Sensor Head, 2 m Cable - 3200812203 making it a low-cost optionSensor heads, replaceable sensor cartridges and accessories for the HORIBA LAQUA WQ 300 Series smart handheld meters (WQ 310, WQ 320 and WQ 330). Select the item you need from the dropdown. The WQ 300 platform separates the sensor into two parts. The sensor head carries the cable and connector and plugs into the meter. The cartridge screws into the head and contains the actual sensing element. When a pH or ion sensor reaches end of life you replace