Video: How To - Calibrating HI98131 pH, EC, ppm, temperature Combo Tester in Cal Standard Mode

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The HI98131 pH, EC/TDS, ppm, temperature combo tester is an advanced, portable, waterproof tool for growers. In this video, see how simple it is to calibrate your tester with the standard pH 4.01 & 7.01 buffers.

[@richmilhoan]

Cool

[@XByakkou]

Hai, im from indonesia. There's no access to quickcal solution. So, for first time use. Do i need to buy 1413 ec calibration liquid?