To attain maximum speed in Kjeldahl digestions. The requisite amount of selenium is readily introduced by using two or three granules with each digestion. Element dissolves in hot acid forming selenious acid which acts in an oxidizing manner effecting rapid and complete digestion. Granules prevent "bumping" and are discarded after use. Each 500 gram bottle is good for about 750 to 1000 digestions. 500 gram bottle.
