The ASTM D4333/D4333M-18 standard is used to evaluate the compatibility of mechanical pump distributor components with consumer products. This specification covers the compatibility testing of pump distributor components of spray and Flow rate types with various products to ensure that these components can cooperate effectively in actual use. Units used in the standard include SI units and inch-pound units, but should be used independently in different systems to avoid non-conformities caused by data consolidation. Users need to take appropriate safety measures and understand relevant regulations before application. This standard is based on the principles of international standardization of the World Trade Organization.