> From: http://hammock.ifas.ufl.edu/txt/fairs/1679
Most analyses for contaminants provide results in terms of concentration, which are usually expressed in units of either parts per million (ppm) or milligrams per liter (mg/l). These two units are used interchangeably by most persons, but are technically different. For the range of concentrations found in most water supplies, the difference is negligible. However, for uniformity in reporting milligrams per liter is used. Concentrations greater than 10,000 mg/l are commonly expressed in percentage by weight. =============================== yes it appears that ppm is the same as mg/l easy enough to remember. Thanks On 30 Jan 97 at 13:58, Britt C. Scheer wrote: > tell me if I'm wrong but I believe mg/L is the same as ppm >
