NIST Traceable, non-toxic reference material for the UV spectrophotometer. Full UV scan reported with a typical absorbance at 300 nm in 10 mm pathlength being approximately 0.039.

Standard kit for the verification of photometric accuracy at 260, 280 and 320 nm in a 1 mm pathlength spectrophotometer.

Concentration (as I) 1,000 +/- 10 ug/mL Matrix: NaI, water

Typical mesh size: 10-35