PEAK INSTRUMENTS P-510 - Ph Standard Buffer Setting(P3); Temperature Unit Setting(P4); Pure Water or Ammonia Pure Water Compensation Setting(P5)

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4.3.3. Press to enter next parameter setting or press to back to
measuring mode.
4.4. pH standard buffer setting(P3)
4.4.1. Press to choose P3 in mode P2,
Then press to enter P3.
4.4.2. Press or to select buffer standard. There are three standards:
USA, NIST and China. Press to confirm the change and back.
4.4.3. Press to enter next parameter setting or press to back to
measuring mode.
CH: 1.68 pH, 4.00 pH, 6.86 pH, 9.18 pH, 12.46pH
NIST: 1.68 pH, 4.01 pH, 6.86 pH, 9.18 pH, 12.45pH
USA: 1.68 pH, 4.00 pH, 7.00 pH, 10.01 pH, 12.45pH
4.5. Temperature unit setting(P4)
4.5.1. Press to choose P4 in mode P3,
Then press to enter P4.
4.5.2. Press or to select temperature unit ℃/℉. Press to
confirm the change and back.
4.5.3. Press to enter next parameter setting or press to back to
measuring mode.
4.6. Pure water or ammonia pure water compensation setting(P5)
4.6.1. Press to choose P5 in mode P4,
Then press to enter P5.
4.6.2. Press or to select compensation mode, “OFF” mean no
compensation, “H2O” mean pure water compensation, “NH3” mean ammonia pure