The simplest way to distinguish between: quicklime, gypsum, white cement
Trial, water test, gypsum fixed fast, lime powder fever is not cured, cement does not heat, curing takes 1 hours.
Look and touch, gypsum white and fluffy, lime powder fine, there is temperature pungent, white cement slants yellow, cold.Attention: do not let the lime powder burn, should not too big surface contact.
The simplest way is to smell the odor, gypsum tasteless, lime, acne nose, white cement odor is relatively pungent.
