Dear Scientific Community
What are the Chemicals Companies that can produce highly purified products (Antioxidants and Toxins) with adequate quantities and suitable prices, any recommendations?
Regards.
It depends on your specific requirement for any particular antioxidant and toxin, as different companies offer different Purity, Pack Sizes and prices. However for HPLC grade Sigma offers a range of antioxidants and toxins.
As it was said by Dr Yeshvandra Verma , I recommend Sigma and Merck which provide antioxidants and toxins of analytical quality with adequate quantities and affordable prices.
This may be an interesting question.
I must declare that Wako Chemical Co., Osaka, Japan, and Nacalai Tesque Co., Kyoto, Japan, are reliable.
Sigma is a very cold hearted company, since my important substrate of biotinyl-6-aminoquinoline (BAQ) for biotinidase assay has suddenly been stopped to sell (please see file; J Chrom B Rat BIN LIP Km).
Sigma , Merck and Aldrich are good for high quality standards for HPLC analysis
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