We want to import a batch of medicinal materials and find an institution to detect pesticide residues, sulfur dioxide and other additives. Where can we test them? Need to recommend testing items

For the standards of pesticide residues and sulfur dioxide, please refer to "China Pharmacopoeia" and "Quality Standards of Chinese Herbal Medicine Production". Chinese herbal medicine testing, component analysis, content determination recommended subject standard testing, very professional. They will recommend testing items to you according to your specific needs and make testing plans. I hope it helps you.