UV-VIS Spectrophotometer

We know that UV-VIS range is 200 to 800nm. I need to measure the sample at 820nm to 830nm range.It is mentioned in Pharmacopoeia.
How could i measure above the UV-VIS range. If i do so, how could i justify to auditor.

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Please confirm the exact UV-VIS range of your spectrophotometer from the manufacturer’s operating manual. If it covers the range upto 830 nm then you can perform the measurement of your sample at 820-830 nm. If the instrument is not in the required range, then please contact the manufacturer to modify the source lamp or filters used.

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Thank for the information.I have reviewed the manual and it covers the range upto 900nm.

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Very good. Now you can perform testing of samples in the desired range of 820 to 830 nm.

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