Tender For supply of hydranal water standard 0.1 standard for karl fischer titration , total acid number standard 0.51mg koh per gram , flash point standard material astm d 93 proc , potassium iodate traceable to nist , sodium chloride certified reference material traceable to nist , sodium carbonate secondary reference material traceable to nist , buffer solution ph 4.00 and traceable to srm from nist , buffer solution ph 7.00 and traceable to srm from nist , buffer solution ph 10.00 and traceable to srm from nist , potassiumhydrogenphthalate secondary reference material traceable to nist