scope:

(a) This method is intended as a general guide for the application of the Karl Fischer reagent method for determining free water and water of hydration in most solid or liquid organic and inorganic compounds. Samples that are gaseous at room temperature are not covered (see Appendix IV). By proper choice of sample size, Karl Fischer reagent concentration, and apparatus, the method is suitable for the measurement of water over a wide concentration range, that is, parts per million to pure water. Both visual and electrometric methods are described for ascertaining the end point.

(b) A list of existing ASTM Karl Fischer reagent methods, their applications to various products, and the sponsoring committees is given in Appendix III.