Anyone purchasing a new pH electrode also needs a suitable calibration and storage solution to put it into operation professionally and, if necessary, to re-calibrate it. JBL has therefore, with immediate effect, integrated the liquids into the pH electrode sets, so that the aquarium owner can start operating it immediately after purchase. When restocking you have the choice. All four liquids can be purchased individually with 50 ml contents or as complete set (
We recommend you carry out a monthly calibration for all pH electrodes, to avert large deviations which are especially relevant during a pH control.