ASTM D5854 practice for mixing and handling of petroleum and petroleum products
ASTM D5854 standard practice for mixing and handling of liquid samples of petroleum and petroleum products
4. Significance and Use
4.1 Representative samples of petroleum and petroleum products are required for the determination of chemical and physical properties used to establish standard volumes, prices, and compliance with commercial and regulatory specifications. The treatment of samples from the time of collection until they are analyzed requires care and effort to maintain their compositional integrity.

5. Safety and Health Precautions
5.1 In view of the potential health and safety hazards associated with the handling and mixing of petroleum samples, only qualified personnel should be involved.

5.2 All sample handling and mixing equipment should be approved by the parties involved. All equipment should be installed, operated, and maintained in a manner to minimize potential health and safety hazards.

5.3 Detailed instructions and references to pertinent guidelines are in Annex A1.