GRABNER INSTRUMENTS

GRABNER INSTRUMENTS PETROLAB MINI VAP VOC 100/110/230 VAC. 50/60 HZ. 100 WATTS S/N: 08-07-118. MINIVAP VOC THE MODERN REPLACEMENT OF THE ISOTENISCOPE ! FOR THE LOW END OF VAPOR PRESSURE ! VOLATILE ORGANIC COMPOUNDS ! FRIENDLY TO THE USER ! 1 ML SAMPLE ! RESULTS WITHIN 5 MINUTES ! FULLY AUTOMATIC OUTGASSING. NEW DESIGN MINIVAP VOC IS AN INSTRUMENT FOR THE AUTOMATIC DETERMINATION OF THE VAPOR PRESSURE OF PURE AND CONTAMINATED ORGANIC COMPOUNDS AND LOW VAPOR PRESSURES OF VARIOUS SUBSTANCES EVEN SOLIDS AT TEST TEMPERATURES OF 10 TO 100°C (50 TO 212°F).THE GENERALLY LOW VAPOR PRESSURES CAN BE MEASURED UP TO 100 KPA (14 PSI 760 MM HG). THE MINIMUM DETECTABLE VAPOR PRESSURE IS 0.5 KPA (0.05 PSI). DISSOLVED AND ENTRAINED FIXED GASES ARE REMOVED FROM THE SAMPLE BY EVACUATION AT A LOW TEMPERATURE TO MINIMIZE COMPOSITION CHANGES. PRINCIPLE OF OPERATION. APPLICATIONS (FROM ASTM D 2879-86) THE VAPOR PRESSURE OF A SUBSTANCE REFLECTS A PROPERTY OF THE SAMPLE AS RECEIVED INCLUDING MOST VOLATILE COMPONENTS BUT EXCLUDING DISSOLVED FIXED GASES SUCH AS AIR. VAPOR PRESSURE IS A THERMODYNAMIC PROPERTY WHICH IS DEPENDENT ONLY UPON COMPOSITION AND TEMPERATURE FOR STABLE SYSTEMS. GOVERNMENT REGULATIONS REQUIRE VAPOR PRESSURE VALUES FORPRACTICALLY ALL LIQUIDS WHICH ARE STORED OR SHIPPED BECAUSE OF SAFETY AND ENVIRONMENTAL PROTECTION REASONS. ASTM D 2879 (ISOTENISCOPE) AN ISOTENISCOPE IS THE STANDARD INSTRUMENT FOR MEASURING LOW VAPOR PRESSURES. THIS METHOD IS VERY TEDIOUS TO USE AND NEEDS HIGHLY SKILLED AND EXPERIENCED PERSONNEL ESPECIALLY FOR THE OUTGASSING PROCEDURE. THE MEASUREMENT IS TIME CONSUMING AND NOT VERY RELIABLE. IN MINIVAP VOC THE OUTGASSING PROCEDURE IS PERFORMED AT A LOW TEMPERATURE AND IT CAN BE ASSUMED WITH HIGH CONFIDENCE THAT THE COMPOSITION CHANGE OF THE SUBSTANCE IS MINIMIZED. AUTOMATIC PROCEDURE THE SAMPLE IS FILLED INTO THE SAMPLE CUP. THE TEMPERATURE PROGRAM TOGETHER WITH THE OUTGASSING PROCEDURE IS PERFORMED FULLY AUTOMATICALLY. MAGNETIC STIRRER STIRRING IS VITAL FOR THE OUTGASSING PROCEDURE AND IS ACCOMPLISHED DURING THE WHOLE MEASURING PROCEDURE. PRINTOUT AFTER AN EQUILIBRIUM TIME OF 1 MINUTE THE OBSERVED PRESSURE IS DISPLAYED AND DOCUMENTED ON THE DIRECTLY CONNECTED PRINTER AS THE VAPOR PRESSURE OF THE SAMPLE. TECHNICAL DATA TEMPERATURE RANGE: 0 TO 100°C 32 TO 212°F . PRESSURE RANGE: 0 TO 1000 HPA 0 TO 100 KPA 0 TO 14 PSI 0 TO 760 MM HG. POWER REQUIREMENTS: 100/120/230/240 V AC 50/60 HZ 65 W W X H X D: 196 X 315 X 175 MM 7.7" X 12.4" X 6.9" WEIGHT: 8 KP (18 POUNDS).