New Instrument Users Instrument QuickStart Sheet Warranty Form Travel Case Expedite Your RA Order Instrument Maintenance Calibration ASTM Mandates Calibration of Instrumentation for 6 month and on on annual basis. New ASTM mandates REQUIRE Grabner Vapor Pressure Instruments receive pressure re-calculations every 6 MONTHS. ASTM D5191-03, Section 10.1.1 REQUIRE that a "calibration check" be performed every 6 months - this "check" is actually defined as a complete re-calibration of the pressure system, not simply a verification at ambient or zero pressure. ASTM D5191-03, Section 10.2 REQUIRE the temperature sensing system be verified at least every six months. Utilize our On-Line return authorization form to schedule your appointment. Pricing Download our Pricing Structure Loaner Loaner Instruments Available Error Messages Common Error Messages That Can Be Corrected by User Tips and Tricks Are you verifying sample temperature of 32-34°F prior to testing? To comply with ASTM D5191 standards, sample must be chilled. Remember to add a small amount of Piston Oil to your instrument (0.1 mL) when it returns from annual tune and calibration to prevent o-ring from drying out and/or possible piston errors. Possible tipping of the unit during shipping can cause oil loss. Refer to your user manual section 12.3 (Maint & Troubleshooting). To re-order Piston Oil, mention part #20111.