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GP353
- General Purpose pH Meter - Users Manual
Table of Contents
Section 1 - Introduction and Set Up
Section 2 - pH Calibration & Measurement
Section 3 - mV Calibration & Measurement
Section 4 - Use of the Recorder Output
Section 5 - Troubleshooting
Section 6 - Specification
Appendix 1 - pH Electrodes & Buffers
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Summary of Contents for EDT directION GP353
- Page 1 GP353 - General Purpose pH Meter - Users Manual Table of Contents Section 1 - Introduction and Set Up Section 2 - pH Calibration & Measurement Section 3 - mV Calibration & Measurement Section 4 - Use of the Recorder Output...
- Page 2 SECTION 1 - Introduction Description The GP353 is a simple-to-operate, bench pH meter. The meter can be calibrated to one or two points, offers manual or automatic temperature compensation and can be used to measure pH, mV and temperature. Unpacking Verify that you have received all equipment.
- Page 3 Combination pH electrodes (reference and sensing electrode in one body) or two half-cells (reference and sensing electrodes separate) may be used with the GP353. Combination or pH half-cells should have a BNC terminal and be connected to the socket marked pH input at the back of the meter. Reference half-cells should have a 4mm bunched terminal and be connected to the socket marked REF.
- Page 4 Section 2 - pH Calibration and Measurement For accurate results, stir all buffers and samples. Always rinse electrodes and blot dry before transferring from one solution to another to prevent contamination. Ensure that any electrode filling holes are left uncovered during use. Automatic Temperature Compensation 1.
- Page 5 Section 3 - mV Calibration and Measurement Absolute mV 1. Switch the mode dial to mV 2. Connect the shorting plug to the BNC input and adjust the CAL control until the display reads 000mV 3. Remove shorting plug and connect electrode(s). 4.
- Page 6 Symptom Probable Cause No display Battery is flat or not installed Power supply disconnected ‘BAT’ flag displayed Battery Low Wildly erratic readings or display reads -- Electrodes disconnected on left hand side Electrodes not immersed in solution Reference electrode not filled Reference junction dry Drifting readings Inconsistent or lack of stirring...
- Page 7 Appendix 1 pH electrodes Before Use Remove the protective cap covering the glass sensing bulb and replace with the protective guard if applicable. Inspect the filling solution for air bubbles and remove by shaking in a downward direction. Soak the electrode in pH storage solution for 30 minutes.
- Page 8 For more information on our products please visit our website www.edt.co.uk EDT directION Unit 5 Waldershare Park, Dover. CT15 5DQ. Telephone: 01304 829960 Email: sales@edt.co.uk Company No, 04135318 VAT No. GB 765175410...
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