Explore or Search Our Complete Test List

A new addition to our site, the complete test list includes detailed descriptions, external links to methods and full text search.

CSTN

Chicagoland Science & Technology News
a newsletter of events compiled monthly by TEI Analytical as a service to the local community.

Search
Send Samples to TEI

Ready to send in your samples for testing? Visit send samples for more information.

Need to know how much sample to send, or how to package it? Visit sample requirements for information about some of our most common tests.

Need detailed pricing? Visit get a quote to fill out a quote request form.

Need more information about the kinds of testing we do? Visit services for a general overview or our complete test list for more details.

Click here if you need a chain of custody form.

Test List > C > COD

Below is a full list of analytical tests performed by TEI. Scroll through the list and click on a test name to see a list of individual methods and a more detailed description.

— or —

Search the test list for entries containing:

COD by EPA Method 410.4

Covers the determination of chemical oxygen demand (COD) in ground and surface waters, domestic and industrial wastes.
https://www.nemi.gov/apex/f?p=237:38:801607507082718::::P38_METHOD_ID:9627