Amendment USP Pharmacopoeia chapter <561>
On 1 December 2015, chapter of the USP Pharmacopoeia “<561> Articles of botanical origins” on herbal drugs (dry plant) will be changed.
A paragraph on the setting of maximum limits for heavy metals has been added.
This sets up the following thresholds:
Mercury Total: 1 mg/kg
According to the reference text, methylmercury determination is not necessary when the content for total mercury is less than the limit for methylmercury.
Know that our laboratory has a COFRAC accreditation for speciation of arsenic and that we can propose you a method for speciation of Mercury in late September.
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