Answer / atom4chem

To check ultraviolet region (190-400nm) WE use Caffeine, Erbium perchlorate and Benzophenone. Caffeine and Erbium perchlorate for wavelenth check while Benzophenone for system precision, detection and injection linearity.

Answer / aprao22@gmail.com

Uracil and Benzophenone

Answer / priti

Anthracene can be used

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