Epm or equivalents per million:
Unit chemical weight of solute per million unit weights of solution.The epm of a solute in solution is equal to the ppm (parts per million) divided by the equivalent weight.
Epm or equivalents per million:
Unit chemical weight of solute per million unit weights of solution.The epm of a solute in solution is equal to the ppm (parts per million) divided by the equivalent weight.