"OPERATING TEMPERATURE RANGE 68 TO 140 DEG F, ACCURACY +/- .1 DEG., PRESSURE RANGE 0-45 PSI, VAPOR TO LIQUID RATIO 4:1, POWER REQUIREMENTS 100/200/220/240 VAC OR OPTIONAL 12 VDC BATTERY PACK, 7.7 X 12.4 X 6.9 INCHES IN SIZE,18 LBS, REID VAPOR PRESSURE ACCORDING TO ASTM D5191, 10 MILLILITER FOR ONE COMPLETE SAMPLE, TEST RESULTS IN 5 MUNUTES, BUILT IN RS232 INTERFACE FOR HARD COPY PRINT OUT WITH PLOT OF CURVE"