Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number 82-21 with rapid responses always offered by our staff. To ensure that you locate and procure exactly what you need with ease, we list parts with as much information as we can. For example, part number 82-21 It is listed as Copper Sulphate. component manufactured by Bureau Of Mines, specifically under CAGE Code 90808. It is also accompanied by the NSN 9535000736113 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 9535 Plate Sheet Strip and Foil Nonferrous Base Metal.