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Client:
Hello, I just calibrated my probe in the pH 7.0 solution, as indicated in the manual, and it is displaying 8.1.
Technical Advisor:
Hello, it is possible that your probe is defective. I suggest you perform this test:
https://ph-redox-pool.com/gb/content/16-ma-sonde-ph-est-elle-hors-service-
Client:
I was told that if the digi does not display 7.0, the probe is defective. I have been using it for 17 months.
Technical Advisor:
Hello, it is possible that your probe is defective. I suggest you perform this test:
https://ph-redox-pool.com/gb/content/16-ma-sonde-ph-est-elle-hors-service-