pH20 • pH21Basic pH metersInstruction Manualwww.hannainst.com
32pH 20 and pH 21 are basic pH meters designed for simplicity of use inall applications where rapid daily controls are required.These meters are also
54SPECIFICATIONSFUNCTIONAL DESCRIPTION1. Liquid Crystal Display2. CAL key, to enter and exit the calibration mode3. CFM key, to confirm calibration va
76Note: If measurements are taken in different samples successively, it isrecommended to clean the electrode thoroughly to avoid cross-contamination.
98pH CALIBRATIONFor better accuracy the instruments should be calibrated frequently,and however:1. After electrode replacement.2. After testing aggres
1110ELECTRODE CONDITIONING & MAINTENANCEPREPARATIONRemove the electrode protective cap.DO NOT BE ALARMED IF ANY SALT DEPOSITS ARE PRESENT: this is
1312ACCESSORIESpH CALIBRATION SOLUTIONSHI 70004P pH 4.01 buffer solution, 20 mL sachet, 25 pcsHI 7004M pH 4.01 buffer solution, 230 mL bottleHI 7004L
HI 2031B Glass body, semimicro, conic tip, refillable, combina-tion. Use: semisolid products.FC 100B PVDF body, double junction, refillable, combinati
MANPH21R1 07/05SALES AND TECHNICAL SERVICE CONTACTSAustralia:Tel. (03) 9769.0666 • Fax (03) 9769.0699China:Tel. (10) 88570068 • Fax (10) 88570060Eg
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