benzidine test การใช้

• It is positive in the benzidine test and weakly positive in methyl red test.
• Nonetheless, through conducting Benzidine tests upon each garment, he had concluded each bore evidence of bloodstains, whereas no blood had been discovered on the knife or water-bottle.
• Following the testimony of Dr . Gardner, Dr . Roche Lynch took the witness stand to discuss the results of the Benzidine tests he had conducted upon Sangret's army blanket, uniform, water-bottle, and the knife discovered at Witley barracks.