Diagnosis of livestock diseases - Hanoi University of Agriculture - 13
Pyramidon reagent method In a test tube: 0.5 ml concentrated acetic acid, 2 ml urine, shake well; add 2 ml pyramidon 5% (in alcohol) and 0.5 ml H 2 O 2 3%. The mixture turns purple – positive reaction. Phenolphthalein method ( Collo method ) In a test tube, add 3 ml of urine and 3 ...