Product Short Description: Glycerol sulfate solution is used to maintain proper crystal size in pricipitation of SUFATE, during SULFATE TEST. As The resultant turbidity of solution is measured at a wave length sensitive to turbidity on a photometer. Product Description: Glycerol sulfate solution is used to maintain proper crystal size in pricipitation of SUFATE, during SULFATE TEST. As The resultant turbidity of solution is measured at a wavelength sensitive to turbidity on a photometer. Click here for more Details of Testing Procedure ...