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Author(s): | L. Brandt | ||
Reviewer(s): | D. Houpt, K. Fujine | ||
Approval: | D.J. Houpt, Supervisor of Analytical Systems | ||
Audience: | AD, MLS, RS, Scientists | ||
Origination date: | 2/14/08 | ||
Approved: | Version 2.0 | 6/13/13 | |
Revision: | IODP-II V2.1 | 1/3/2014 371T | X382 April 2019 |
Domain: | Chemistry | ||
System: | Titration and Refractometry | ||
Keywords: | Titration, pH, Alkalinity |
User Guide Contents
| Table of Contents |
|---|
| TOPIC | PAGE|
|---|---|
| Introduction | 1 |
| Apparatus, Reagents, & MaterialsInstrument Calibration | |
| Main Instrument Panel | |
Calibrating the electrode | |
Standard ratio correction | |
Drift Span | |
| Sample Preparation & Analysis | |
Cleaning up after Measurement | |
Data Handling | |
| Quality Assurance/Quality Control | |
| Software Dataflow | |
| LIMS Integration | |
| Health, Safety & Environment | |
| Maintenance/Troubleshooting | |
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Figure 14. Acid dispenser reminder prior to starting the alkalinity measurement.
Measuring Alkalinity
1. | On the Alkalinity/Standard tab, ensure dispensing rate, drift span, and standard ratio are set correctly (Figure 7). |
2. | Ensure the water bath temperature is set to 25°C and pipette sample in titration vessel. |
3. | After rinsing the electrode with DI water and gently blotting dry with a Kimwipe, insert the electrode tip into sample (not touching the bottom of the cup). |
4. | Click SAMPLE. |
5. | Select measurement type from the list, enter operator name (this must be the same as LIMS user ID), text_ID, and sample volume (Figure 8). Click OK. |
6. | After taking the initial mV and pH readings, the software prompts the user to insert the acid dispensing tip and click GO (Figure 9). If you make a mistake, click ABORT and no acid will be added to the sample. After clicking GO, the sample will be titrated to completion. |
7. | Click Done/Save to upload data (see LIMS Integration). |
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