This standard specifies the requirements, test methods and inspection rules for low-protein natural latex produced by ammonia preservation centrifugation and high-chemical concentration, as well as packaging markings, storage and transportation. This standard applies to low-protein natural latex produced by enzymatic centrifugation and paste concentration, as well as low-protein natural latex produced by multiple centrifugation methods. This standard does not necessarily apply to low-protein natural rubber latex produced by other methods.