A milliequivalent is the ppm of that ion divided by its atomic weight per charge. Example: Ca2+ with atomic weight of 40 and a solution concentration of possibly 200 ppm. Ca2+ has two charges per atom ...

Prescription abbreviations like qd, hs, or bid can sometimes be found on your medication labels. These abbreviations are derived from the Latin words for "every day," "at bedtime," and "twice daily," ...

Despite the rains we have had this year, irrigated agriculture must always contend with salts. All waters, even rain water, have some salts dissolved in them, so all could be called saline. The term ...