... SUN-500B Technical Data:Parameters: pH, Nitrite, Ascorbic Acid, Protein, Specific,Gravity, Blood, Glucose, Bilirubin, Urobilinogen, Ketone, Leucocytes,Microalbumin, Creatinine, CalciumMeasurement Principle ... laboratoryFully automatic operation for ready-to-testInternal calibration for sensitivity of stripsLong life and high stability light sourceBarcode reader optional & RS232 ...