Coulometer: Quick Start Guide
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Manual Information
Author(s): | C. Bennight | ||
Reviewer(s): | D. Houpt, K. Fujine, L. Brandt | ||
Revised by: | D. Houpt | ||
Manager Approval (Name, Title, Date): | D.J. Houpt (Supervisor of Analytical Services) | ||
Audience: | Scientists, Laboratory Technicians | ||
Origination date: | 3/1/2009 | ||
Current version: | V371T | July 2017 | |
Previous Revisions: | V1.2 | 2/20/2014, V 1.0 | 9/08/2010 |
Domain: | Chemistry | ||
System: | Coulometry |
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Motion compensation software developed in house allows the user to weigh the mass of chemicals and samples at sea. Reagents and samples >250 mg must be measured on the Mettler-Toledo XS204 balance (Figure 5). Reagents and samples ≤ 250 mg must be measured on the Cahn balance (Figure 6).
Figure 5. Mettler-Toledo Dual Balance Control Software.
Figure 6. Cahn Balance Control Software.
Laboratory Supplies
Apparatus
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Figure 9. Coulometer Software
- Click Measure (Figure 9).
- Quickly add 5mL of 2N HCl to the sample using the acid dispenser (within 10 seconds).
- Once measuring is complete, click Save and record the %CaCO3, % carbon, and carbon mass in the log book. The %CaCO3 standard should give a %CaCO3 value of 100%. See the technician if this value is not acquired after running 3 standards.
- Wait 10-15 minutes for the system to restabilize between samples.
- Repeat steps 10-16 for the samples.
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