supply of inhibited mineral insulating oil , inhibited mineral insulating oil as per type ii transformer oil of is 335:2018 and to railways requirement as per rdso letter n o. ti/psi/insol/policy /19 dt. 26/07/19 with the following additional characteristics requirements.1. lowest cold start energizing temperature 0 degree c . 2. presence of oxidation inhibitor (dbpc-2, di tertiary-butyl-para- cresol) content range -0.25%-0.30% 3. oxidation stability: ( a) total acidity neutralization value after oxidation (max) 0.2mg koh/gm. (b) total sludge after oxidation (max) 0.05% by mass. note: rds os additional requirement no.2 and 3 to be tested in any one of the nabl accredited laboratories and copy of the report to be furnished by tpi along with their inspection report. [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]