Accurate analytic results in UV/VIS and infrared spectroscopy depend on the use of very pure solvents for sample preparation. The Uvasol solvents range has been specially designed for spectroscopy and other applications requiring solvents of the highest spectral purity. The refinement process allows a greater degree of security in applications and avoids misinterpretation of analytical results caused by traces of UV, IR and fluorescence contamination. Uvasol solvents offer best UV transmittance. In all specifications the minimum transmittance for 5 typical wavelengths are identified.

Purity (GC): ≥ 99.5 %

Evaporation residue: ≤ 0.0002 %

Water: ≤ 0.005 %

Colour: ≤ 10 Hazen

Acidity: ≤ 0.0002 meq/g

Alkalinity: ≤ 0.0002 meq/g

Fluorescence (as quinine at 254 nm): ≤ 1.0 ppb

Fluorescence (as quinine at 365 nm): ≤ 1.0 ppb

Transmission (at 200 nm): ≥ 50 %

Transmission (at 210 nm): ≥ 70 %

Transmission (at 215 nm): ≥ 85 %

Transmission (at 225 nm): ≥ 95 %

Transmission (from 240 nm): ≥ 98 %

Absorbance (at 200 nm): ≤ 0.30

Absorbance (at 210 nm): ≤ 0.16

Absorbance (at 215 nm): ≤ 0.07

Absorbance (at 225 nm): ≤ 0.02

Absorbance (from 240 nm): ≤ 0.01

Meet the requirements of "Specific use spectroscopy" according Reag. Ph Eur