urine analyzer SUN-500B Technical Data:Parameters: pH, Nitrite, Ascorbic Acid, Protein, Specific,Gravity, Blood, ... screenSerial oort(RS232),parallel port(For external printer),PS/2(For barcode reader,optional) Work condition:Environmental Temperature:15-30°C ... ,RH:20%-80%Powersupply:100-240VAC,50/60HzDimension: 390mm ...