Related Manuals for Hanna Instruments pH 21
Summary of Contents for Hanna Instruments pH 21
- Page 1 Instruction Manual pH20 • pH21 Basic pH meters w w w . h a n n a i n s t . c o m...
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Page 2: Table Of Contents
FUNCTIONAL DESCRIPTION ................ 4 SPECIFICATIONS ................... 5 OPERATIONAL GUIDE ................6 pH CALIBRATION ................... 9 Hanna Instruments reserves the right to modify the design, construction and ELECTRODE CONDITIONING AND MAINTENANCE ........11 appearance of its products without advance notice. ACCESSORIES... -
Page 3: Functional Description
FUNCTIONAL DESCRIPTION Note: These instruments use the following configuration. It is recommended to use the Hanna HI 710005 or HI 710006 voltage adapters (supplied with the meter) which are provided with the proper polarity configuration. The meters can also be powered with other adapters. In this case, remember to check the correct polarity of the adapter before connect- ing it to the meter. -
Page 4: Operational Guide
Note: If measurements are taken in different samples successively, it is OPERATIONAL GUIDE recommended to clean the electrode thoroughly to avoid cross- contamination. After cleaning, rinse the electrode with water and then with some of the solution to be tested. TAKING pH MEASUREMENTS •... -
Page 5: Ph Calibration
• After measurements, turn the meter off by pressing the ON/OFF pH CALIBRATION key, disconnect the power adapter from the mains and the electrode from the instrument. For better accuracy the instruments should be calibrated frequently, Note: To perform correct ORP measurements, the surface of the ORP and however: electrode must be clean and smooth. -
Page 6: Electrode Conditioning And Maintenance
• Wait till the hourglass symbol on the LCD turns off and the "pH" ELECTRODE CONDITIONING & MAINTENANCE tag stops blinking, then press CFM to confirm the second calibra- tion point (slope). PREPARATION Remove the electrode protective cap. DO NOT BE ALARMED IF ANY SALT DEPOSITS ARE PRESENT: this is normal with electrodes and they will disappear when rinsed with water. -
Page 7: Accessories
CLEANING PROCEDURE ACCESSORIES General : Soak in HI 7061 General Cleaning Solution for about 30 minutes. Removal of films, dirt or deposits on the membrane/junction: pH CALIBRATION SOLUTIONS Protein : Soak in HI 7073 Protein Cleaning Solution for 15 minutes. HI 70004P pH 4.01 buffer solution, 20 mL sachet, 25 pcs Inorganic : Soak in HI 7074 Inorganic Cleaning Solution for 15 HI 7004M... - Page 8 HI 8072 1M KNO electrolyte, 4 x 30 mL (FDA approved bottle) HI 2031B Glass body, semimicro, conic tip, refillable, combina- HI 7082 3.5M KCl electrolyte, 4 x 30 mL, for double junction tion. Use: semisolid products. electrodes FC 100B PVDF body, double junction, refillable, combination.
- Page 9 SALES AND TECHNICAL SERVICE CONTACTS Australia: Tel. (03) 9769.0666 • Fax (03) 9769.0699 China: Tel. (10) 88570068 • Fax (10) 88570060 Egypt: Tel. & Fax (02) 2758.683 Germany: Tel. (07851) 9129-0 • Fax (07851) 9129-99 Greece: Tel. (210) 823.5192 • Fax (210) 884.0210 Indonesia: Tel.