PH Probe Calibration Issues INTP 5210 Pentair: PH4 Phase Failure

Client:
Hello, yesterday I tried to install my new PH reference probe INTP 5210 for Pentair that I ordered from you on July 17th (order YXVOZRUWM / invoice FA009287), but despite several attempts, it appears that it cannot be calibrated! The first calibration step in PH7 liquid goes well, but the second calibration phase in PH4 liquid FAILS EVERY TIME (see attached photo). I would appreciate it if you could replace this faulty probe as soon as possible. Looking forward to your prompt response. Regards, Patrick PENAUILLE 06 07 02 00 05


Technical Advisor:
Hello


Client:
Hello, yesterday I tried to install my new PH reference probe INTP 5210 for Pentair that I ordered from you on July 17th (order YXVOZRUWM / invoice FA009287), but despite several attempts, it appears that it cannot be calibrated! The first calibration step in PH7 liquid goes well, but the second calibration phase in PH4 liquid FAILS EVERY TIME (see attached photo). I would appreciate it if you could replace this faulty probe as soon as possible. Looking forward to your prompt response. Regards, Patrick PENAUILLE 06 07 02 00 05


Technical Advisor:
Hello