Method SM 3500-Cr B

Hexavalent Chromium


The colorimetric method is useful for the determination of hexavalent chromium in a natural or treated water in the range from 100 to 1000 ug/L. This range can be extended by appropriate sample dilution or concentration and/or use of longer cell paths.

This procedure measures only hexavalent chromium, (Cr6+). For total chromium determination, acid-digest the sample and follow with a suitable instrumental analysis technique. The hexavalent chromium is determined colorimetrically by reaction with diphenylcarbazide in acid solution. A red-violet colored complex of unknown composition is produced. The reaction is very sensitive.

-Standard Methods Online – Standard Methods for the Examination of Water and Wastewater

Method Data

Method 6020
Hold Time
Sample Volume
Collection Method
Method Reference

Analyte Test

Analyte Formula CAS Number
Hexavalent Chromium Cr 6+

*Please contact our project management team for more information about reporting limits and other specific project needs.

Request a Quote

If you would like us to provide a quote for laboratory analysis, just provide us with information about how we can help you with your project.