supply of certified reference materials ( crm ) for qc lab at iocl guwahati refinery supply of certified reference materials ( crm ) for qc lab at iocl guwahati refinery , list of item ( s ) / work ( s ) as per tender documents , crm for freezing point in atf , crm for flash point ( abel ) , crm for flash point ( pmcc ) , crm of fia for aromatics in atf , crm for pour point as per astm d97 , crm for cfpp of diesel as per ip 309 , crm for saybolt color, +25 , crm for saybolt color, +15 , ultra low sulfur standard astm d 5453 , low sulfur standard as per astm d 5453 , sulfur std set for sko-as per astm d4294 , sulfur std set for ms-as per astm d 4294 , sulfur std set for hsd-as per astm d4294 , sulfur std set for rfo-as per astm d4294