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Hach PHC725, User Manual

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Hach PHC725 User Manual Download Page 1

DOC022.53.80432

PHC725

05/2021, Edition 2

User Manual

Summary of Contents for PHC725

Page 1: ...DOC022 53 80432 PHC725 05 2021 Edition 2 User Manual...

Page 2: ......

Page 3: ...rocedure 8 Section 6 Sample measurement 9 6 1 Sample requirements 9 6 2 Sample measurement notes 9 6 3 Sample measurement procedure 9 Section 7 Verify the calibration 10 7 1 Verification procedure 10...

Page 4: ...Table of Contents 2...

Page 5: ...y solids For the best accuracy do not use the probe to measure the pH of very alkaline samples Figure 1 Probe overview 1 Probe soaker bottle with storage solution 5 Probe soaker bottle holder 2 Fillin...

Page 6: ...nufacturing defects but not improper use or wear Certifications CE FCC ISED Section 3 Safety information 3 1 Intended use The Intellical probes are intended for use by individuals who measure water qu...

Page 7: ...probe with a blocked filling hole will not operate correctly New probes are filled with electrolyte filling solution and have a soaker bottle that contains storage solution to keep the glass bulb and...

Page 8: ...e meter starts for the first time or after battery replacement 8 Connect the probe to the meter 9 Remove the filling hole plug before use Keep the level of the electrolyte filling solution above the l...

Page 9: ...e pH units apart For a one point calibration use a pH buffer near the expected sample pH Use the default calibration options or change the options in the probe settings menu Use the single display mod...

Page 10: ...ffer solution Make sure that the sensor and reference junction are fully in the solution Do not put the probe on the bottom or sides of the beaker 6 Shake the probe from side to side to refresh the re...

Page 11: ...purity or low ionic strength LIS samples absorb gases from the air that can change the sample pH For stable measurements use an LIS chamber or a flow cell 6 2 Sample measurement notes Read the notes...

Page 12: ...res the selected pH buffer value to the measured pH value and accepts or rejects the measurement The user can change the pH buffer solution and acceptance criteria for verification in the probe specif...

Page 13: ...ample material stays on the probe 1 Rinse the probe with deionized water Use warm 35 45 C 95 113 F deionized water to remove storage solution that dries on the probe Dry the probe body with a lint fre...

Page 14: ...nctions Electrode cleaning solution for porous pin diaphragm reference junctions Thiourea 3 hours with stirring or until the porous plug becomes white 8 2 Fill the probe Add electrolyte filling soluti...

Page 15: ...s less than 0 5 cm 0 2 in or when the sample temperature is more than 60 C 140 F Refer to Figure 5 and Table 2 for preparation Mix some of the filling solution with the crystals to help move the cryst...

Page 16: ...d KCl crystals from the probe as possible Discard the solution and KCl crystals 3 Remove the remaining KCl crystals as follows a Fill the probe half full with deionized water Close the filling hole b...

Page 17: ...N O T I C E Probes can become permanently damaged if kept in a storage solution that is not specified by the manufacturer Use only the specified storage solution saturated KCl Do not store the probe i...

Page 18: ...ilization or inaccurate measurements The sample absorbs carbon dioxide CO2 from the air which causes the pH value to slowly decrease in low ionic strength LIS or high purity samples Use the LIS chambe...

Page 19: ...Item no pH 4 01 buffer solution Singlet one use packets 20 mL each 20 pkg 2770020 pH 7 00 buffer solution Singlet one use packets 20 mL each 20 pkg 2770120 pH 10 01 buffer solution Singlet one use pac...

Page 20: ...pkg SM5010 Beaker 30 mL plastic red 80 pkg SM5011 Beaker 30 mL plastic yellow 80 pkg SM5012 Beaker 30 mL plastic blue 80 pkg SM5013 Beaker 30 mL plastic green 80 pkg SM5014 Beaker dispenser and holder...

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Page 22: ...669 2932 orders hach com www hach com HACH LANGE GMBH Willst tterstra e 11 D 40549 D sseldorf Germany Tel 49 0 2 11 52 88 320 Fax 49 0 2 11 52 88 210 info de hach com www de hach com HACH LANGE S rl 6...

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