User manual HANNA INSTRUMENTS HI 98172

[. . . ] Instruction Manual HI 98170 HI 98171 HI 98172 Calibration Check Waterproof pH/mV/ISE/Temperature Meters w w w. c o m 1 Dear Customer, Thank you for choosing a Hanna Instruments product. Please read this instruction manual carefully before using the instruments. This manual will provide you with the necessary information for correct use of the instruments, as well as a precise idea of their versatility. [. . . ] · After the fourth calibration point is confirmed, immerse the ISE electrode approximately 4 cm (1½") into the fifth calibration solution. · If necessary, press the ARROW keys to select a different standard value. · The " " tag will blink on the LCD until the reading is stable. 20 · When the reading is stable and close to the selected standard, the "CFM" tag blinks. The instrument stores the calibration value and returns to normal LOG CFM measurement mode. Notes: · If the new slope is out of slope window or the mV value is out of mV range (±2000), "WRONG" tag will blink. In this case check if the correct standard has been used, or refresh the electrode by following the Cleaning Procedure (see page 43). · Slope window is between ±20 mV and ±120 mV if ion charge is not specified (undF selected in SETUP menu) or between 50% and 120% of default slope for the corresponding ion charge. Default slope value (mV/decade): ­59. 16 (monovalent anion) - ion charge is ­1 59. 16 (monovalent cation) - ion charge is 1 ­29. 58 (divalent anion) - ion charge is ­2 29. 58 (divalent cation) - ion charge is 2 100 - ion charge is "undF" · Press 2nd then CLR in any moment during calibration. The "CLr ALL" message AutoEnd CLR will be displayed on the LCD along with "OLD" tag. All old calibrations, starting with current selected standard are cleared and the instrument continues calibration. · The instrument will display "----" on the primary LCD if it is not calibrated or after all calibrations are cleared. Note: If CLR is pressed during the first calibration point, the instrument returns to measurement mode. · Press 2nd then MODE to display the temperature reading on the LCD during calibration. MODE FOUR, THREE, TWO or ONE-POINT CALIBRATION · Proceed as described in "FIVE-POINT CALIBRATION" section. The instruments will return to measurement CAL GLP mode and will memorize the calibration data. 21 GOOD LABORATORY PRACTICE (GLP) GLP is a set of functions that allows storage and retrieval of data regarding the maintenance and status of the electrode. All data regarding pH, Rel mV or ISE calibration is stored for the user to review when necessary. EXPIRED CALIBRATION The instrument is provided with a real time clock (RTC), in order to monitor the time elapsed since the last pH calibration. The real time clock is reset every time the instrument is calibrated and the "expired calibration" status is triggered when the instrument detects a calibration time out. The "CAL" "DUE" tags will start blinking to warn the user that the instrument should be recalibrated. The calibration time out can be set (see SETUP for details, page 25) from OFF (function disabled) to 7 days. For example, if a 4 days time out has been selected, the instrument will issue the alarm exactly 4 days after the last calibration. to 5 days), then the alarm will be immediately recalculated and appear 5 days after the last calibration. [. . . ] Use: biotechnology, micro titration. 12 mm 0. 5" 5 mm 0. 2" 3 mm 0. 12" 3. 0 mm DIA 0. 12" HI 1083 120 mm 4. 7" 46 HI 1131B Glass-body, single junction, refillable, combination pH electrode. Use: general purpose. 9. 5mm DIA 0. 37" 12 mm 0. 5" HI 1131 120 mm 4. 7" "S" VERSION HI 1330B Glass-body, semimicro, single junction, refillable, combination pH electrode. Use: laboratory, vials. 5mm DIA 0. 2" 5mm 0. 2" HI 1330 120 mm 4. 7" "S" VERSION HI 1331B Glass-body, semimicro, single junction, refillable, combination pH electrode. Use: flasks. 8 mm 0. 3" 7. 5mm DIA 0. 29" HI 1331 210 mm 8. 25" "S" VERSION HI 1230B Plastic-body (PEI®), double junction, gel-filled, combination pH electrode. [. . . ]