For use with HM Digital's PH-200 and PH-80 (as well as other brands of pH meters). Always make sure your sensor is kept in an electrode storage solution. If dry, refill the pH meter cap with the PH-STOR storage solution. The sponge should be moist (not soaking wet).%20AppleWebKit%2F537.36%20(KHTML%2C%20like%20Gecko)%20Chrome%2F87.0.4280.66%20Safari%2F537.36&aac=&if=1&uid=1605953057&cid=1&v=500)
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