Dr.Meter PH838 - Package Contents

 If the electrode is passivated and being contaminated or blocked by the
substances in the tested solution, please rinse it with the proper solution to renew
the electrode. (Note: When rinsing, please choose the solution according to the
properties of the substances in the tested solution.)
Package Contents
1 x pH meter
2 x pH 4 powder
2 x pH 6.86 powder
2 x pH 9.18 powder
1 x user manual
1 x warranty card