Thermo Products 9678BNWP Sample Requirements

Sample Requirements

Electrodes with an epoxy body should only be used in aqueous

solutions.

Electrodes with a glass body may be used in non-aqueous

solutions and solutions that contain organic solvents.

The ORP electrodes contain a silver/silver chloride (Ag/AgCl)

reference that may become clogged in solutions that contain

silver complexing or binding agents such as TRIS, proteins and

sulﬁdes. Frequent cleaning may be required when measuring

solutions that contain these agents. Proteins cause the

additional problem of coating the electrode, so extra care should

be taken to keep the electrode clean while measuring samples

that contain proteins.

Contents

Main User Guide Page 1Redox/ORP Electrode User Guide Introduction 2Redox/ORP Electrode User Guide Required Equipment 3Redox/ORP Electrode User Guide Sample Requirements 4Redox/ORP Electrode User Guide Electrode Preparation Electrode Preparation for Rellable Electrodes Electrode Preparation for Gel-Filled Electrodes 5Redox/ORP Electrode User Guide Figure 1 Rellable ORP Electrode Figure 2 Sure-Flow Rellable ORP Electrode 6Redox/ORP Electrode User Guide Electrode Calibration 7Redox/ORP Electrode User Guide 8Redox/ORP Electrode User Guide Measurement Techniques 9Redox/ORP Electrode User Guide Electrode Measurements Direct Measurements 10 Redox/ORP Electrode User Guide Oxidation-Reduction Titrations 11Redox/ORP Electrode User Guide 12 Redox/ORP Electrode User Guide 13Redox/ORP Electrode User Guide 14 Redox/ORP Electrode User Guide Electrode Maintenance 15Redox/ORP Electrode User Guide Electrode Cleaning Procedures General Cleaning Cleaning Solutions 16 Redox/ORP Electrode User Guide Sure-Flow Electrode Cleaning Cat. No. 9678BNWP and 967800 17Redox/ORP Electrode User Guide Electrode Storage Short-term Storage (up to one day) Long-term Storage (over one day) 18 Redox/ORP Electrode User Guide Troubleshooting Meter Electrode Sample/Application Technique Assistance Warranty 20 Redox/ORP Electrode User Guide Ordering Information Thermo Fisher Scientic