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This reference material consists of spectroscopic grade chloroform, permanently sealed by heat fusion in a high quality far UV quartz cell. Heat sealing the cell in this way virtually eliminates the risks associated with handling this volatile, hazardous substance.
The spectrum shows a cut - off (i.e. Absorbance >2.0A) at approximately 2365 nm. Any light detected within ± 20 nm of this wavelength will be stray light.
Note: This assumes that the measurement has been performed on a NIR spectrophotometer with appropriate resolution, i.e. at the spectral bandwidth set on the instrument the wavelength distribution at 2365 nm does not exceed ± 20 nm. If this does occur, the stray light will be over-estimated.
The certified cut-off wavelength is the wavelength at approximately 2400 nm at which the absorbance value exceeds 2.00 A