CAUTION — Some products, particularly natural gasolines, may have a significantly higher vapour pressure than is characteristic for their class, even if below 124 kPa at 37,8 °C. For this reason, extreme caution should be exercised to ensure that the pressure vessel containing such material is not placed in a bath at 100 °C. Such samples may develop sufficient pressure at 100 °C to rupture the pressure vessel and cause damage and/or injury.