Application:
*PH-10S, 20S, 30S: suitable for measuring the liquids.
*PH-10F, 20F, 30F: suitable for measuring the semisolid substances.
*PH-10L, 20L, 30L: suitable for measuring the small volume samples.
*PH-40 is suitable for connecting with the various pH electrodes.
65-66 Pocket pH ℃ ℉ Tester.pdf