supply of magnetic ink paste black colour for magnetic particle testing in visible lightmagnetic ink paste black colour for magnetic particle testing in visible light,magnetic ink paste black colour for magnetic particle testing in visible light as per the following conditions 1) ink colo ur: black colour 2) ink in the form of paste and oil suspension medium 3) as per is specification: 6410, astm e 1444 and astm e 7 09 and rdso/m&c/ndt/109/2007, (rev-2) july 2020 4) packing in 1 kg container, every bottle with guarantee certificate and propo rtion of mixing from oem required [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]