bids are invited for 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 - flash point standard material astm d 93 , potassium iodatetraceable to nist , sodium chloride certified reference material traceable to nist , sodium carbonate secondary reference materialtraceable to nist , buffer solutionph 4.00 andtraceable to srm from nist , buffer solutionph 7.00 andtraceable to srm from nist , buffer solutionph 10.00 andtraceable to srm from nist , potassium hydrogen phthalate secondary reference material traceable to nist total quantity : 2992