Standard for Karl Fischer titration (water content 1 mg/g = 0.1%, exact value on report of analysis), verified against NIST SRM 2890 & NMIJ CRM 4222, Box contains 10 glass ampoules of 4 mL Methoxybenzene, Methyl Phenyl Ether water content 1.0 mg/g = 0.1%, exact value on report of analysis, Standard for Karl Fisher titration