Colistin sulfate for microbiological assay 25 mg (x1) /
https://www.genesapiens.org/shop/rw2-c2700000-colistin-sulfate-for-microbiological-assay-25-mg-x1-307618
https://www.genesapiens.org/web/image/product.template/307618/image_1920?unique=109501b
This Colistin is guaranteed a sulfate with the use of for microbiological assayand directly supplied to your lab by Gentaur's warehouse.
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