measure of small concentrations (1 to 100 ppm) citric acid

Question

How to measure small concentrations (1 to 100 ppm) of citric acid?

Duilio Calura · Answer

Simply, you can ‘google’ (“citric acid” “test strip”) your request and you will find a lot of solutions, like this one: https://www.indigoinstruments.com/test_strips/biology/miscellaneous/vitamin-c-citric-acid-color-chart.html
or:
https://www.admeo.us/products/citric-acid-reagent-kit

Todd Wingers, MBA · Answer

HPLC or a back titration with a base.

Taxonomy