Developers are used to pull dye penetrant from the flaw, making it visible under an ultraviolet light during inspection. Applications for our developers include inspections on welds, castings and forgings among others. Berg offers developer products from Chemetall, Magnaflux, Circle and Sherwin. Please browse our products to find the right one for you. If you have any questions, please give us a call at 1-847-577-3980 or send an email to info@bergeng.com. Our experienced staff is there to help.