Palintest COD Tubetests COD Vials Mercury Free (For Low Chloride)

Palintest COD Tubetests Range - without Mercury, 16mm, for samples with low chloride.

Palintest Tubetests are integrated with the Palintest photometer system so as to provide a complete system for COD measurement. Palintest COD Tubetests are offered in four ranges:

• 150 mg/l
• 400 mg/l
• 2,000 mg/l
• 20,000 mg/l.

They are supplied in packs of 25 vials.

The reagent formulations are based on those specified in recognised international standard methods and meet the requirements of conformity testing against national and international standards.

Chloride is an interference to the COD test. Vials offer differing degrees of chloride suppression, so the most appropriate one for your COD and chloride levels should be selected. 

This mercury-free formulation is recommended for general use where the samples do not contain levels of chloride exceeding 100mg/l. If your chloride levels exceed this, you will need to either dilute your sample (COD levels present will still need to be within detection range) or select the Mercury-containing vials - M range (suppression up to 2,000mg/l) or 2M range (suppression up to 4,000mg/l).

What is COD?

A chemical oxygen demand (COD) test is used to measure the amount of organic compounds in a water sample. It measures the capacity of water to consume oxygen during the decomposition of organic matter and the oxidation of inorganic chemicals such as Ammonia and nitrate.

How is COD measured?

COD can be measured using COD tubes and a compatible photometer/spectrophotometer. Tubes must first be digested in an appropriate COD vial digester, cooled, and the COD value can then be read on the meter. We recommend checking out this article here if you need more information on the process. 

How do I dispose of COD vials?

COD vials (even the mercury-free ones) contain toxic chemicals that must be professionally disposed of. We are able to provide a number of options for vial disposal - click here.