use of twice-distilled water or addition of normal equine serum , preheated at 56 degrees c for 30 min and adsorbed with an adsorbent from the diagnostic kit , to normal saline ( 1 ml of serum per 100 ml of the saline ) helps eliminate spontaneous agglutination of the tested diagnosticum during the detection of hbsag with the use of reverse passive hemagglutination test , when the experiments are carried out in areas with high concentrations of salts and organic substances in the water .
C0790233
distilled water
C0043047
water