Pharmaceutical laboratories supplying products for the US market are obliged to respect the regulations set down by the US Pharmacopoeia.

The 5th supplement of USP24-NF19 lays down the rules for checking the quality of pure or fully deionised water used for the production of injection products.

These rules are not particularly easy to implement and the expertise of a manufacturer of analytical instruments like Radiometer Analytical is a crucial aid.

The conductivity of water provides information on its chemical composition. It is therefore logical that USP24-NF19 makes this the main parameter to measure.