Conversions: 33 µS=17.9ppm=1dH.
Good quality reverse osmosis water measures 5–15 µS, while de-ionized water
typically measures 0–1 µS.
Clean the electrodes, when necessary, by soaking the tip in acid (e.g.,
vinegar or diluted hydrochloric acid (muriatic acid) and then rinsing well in
water. If it is heavily fouled with organic material, soaking the tip in alcohol
or bleach may help. Gentle wiping with a soft, nonabrasive cloth may also be