Linearity and accuracy of ultraviolet and visible wavelength photometer: an interlaboratory survey.
A survey was made to determine the linearity and accuracy of ultraviolet and visible wavelength photometers used by laboratories in New York State. Two solutions each of high-purity potassium dichromate and cobalt ammonium sulfate were submitted for photometric performance studies. The majority of the participant spectrophotometer results showed good correlation with reference data. Broad half-band width (greater than 10 nm) photometers showed little deviation from linearity. Coefficients of variation for the models surveyed were 5-10%.
D000645:Ammonium Sulfate; D000704:Analysis of Variance; D003035:Cobalt; D005069:Evaluation Studies as Topic; D009518:New York; D011192:Potassium Dichromate; D013053:Spectrophotometry / Q000592:standards*; D013056:Spectrophotometry, Ultraviolet / Q000592:standards*
D003035:Cobalt; D000645:Ammonium Sulfate; D011192:Potassium Dichromate