Under the Chinese Medicine Ordinance (Chapter 549 of the Laws of Hong Kong), testing for pesticide residues has been required for the registration of pCm since 2003 to ensure that they can meet the safety requirements. According to the Technical Guidelines for Registration of proprietary Chinese medicine, 9 organochlorine pesticide residues have to be tested.
Below table shows the maximum permitted levels of organochlorine pesticide residues:
Names of pesticides
Maximum permitted level (mg/kg)
Aldrin and dieldrin
Sum of aldrin and dieldrin
Sum of cis-chlordane, 0.05 trans-chlordane and oxychlordane
Sum of p,p’-DDT, o,p-DDT, 1.0 p,p’-DDE and p,p’-TDE
Sum of heptachlor and heptachlor epoxide
Sum of α-, β-and δ-isomers
Sum of quintozene, pentachloroaniline and methyl pentachlorophenyl sulphide
Enviro labs Ltd. equipped with sophisticated instrument that could provide accurate analytical services to test for the above parameters in proprietary Chinese medicines.