7.4.1.2 Groups 3 and 4—If the sample is not fluid at ambient
temperature, it is to be heated to a temperature of 9 to 21°C
above its pour point (Test Method D97, D5949, or D5985)
prior to analysis. If the sample has partially or completely
solidified during storage, it shall be vigorously shaken after
melting prior to opening the sample container to ensure
homogeneity.