Apera SX620 pH Pen Tester Tutorial

±0.01 pH, 1 to 3 point auto. calibration with single-button operation.
00:07 What's in the kit?
01:05 pH calibration
02:34 pH measurement
03:08 Calibration notes
04:17 Probe replacement
04:46 Temperature unit switch
04:53 Application notes
05:10 Probe cleaning
05:47 Other notes

[@cesarzamora2203]

Buenas ,el error que marca la pantalla es debido a que está contaminado ??

[@cesarzamora2203]

Tienen solución el error que marca. ???

[@smarterink1]

when i press CAL, i get PH4 everytime. How do i get PH7?

[@romyelisa8872]

Que es el error 4?