Why is a shaker and 5 minutes of shaking required for TOC tests TNT810 and TNT811?

Document ID

Document ID TE1863

Published Date

Published Date 27/05/2017
Question
Why is a shaker and 5 minutes of shaking required for TOC tests TNT810 and TNT811?
Summary
Need for shaker during TNT+ TOC tests
Answer
The shaking is to remove total inorganic carbon (TIC). The test measures the carbon dioxide generated during digestion so the carbonates and bicarbonates in the sample must be removed, as these are not organic forms of carbon.