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What is the recommended calibration standard for the deep UV and refined fuel sensors?
We recommend using 1-5 naphthalenedisulfonic acid disodium salt as a lab standard.  Please refer to the application note on Detection of Refined Oils (Fuels) in Water.

Please refer to our How to Buy – Complementary Products page for information on purchasing 1-5 naphthalenedisulfonic acid disodium salt.

In order to prepare a standard, weigh out some of the standard (grams) and dissolve in a known volume of water (milliliters).  Now you have a concentration of grams/milliliter.  From there you can convert to micrograms/liter or ppb.