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Full set of Notes with Fill-Ins - San Jose State University

Full set of Notes with Fill-Ins - San Jose State University

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Chem 155 Unit 10 Page 193 <strong>of</strong> 316Double-beam instruments continually monitoror alternate between P and Po using a second,blank cuvetteAdvantages <strong>of</strong> double beam designs:Accuracy:P and Po are measured:almost simultaneouslyso source and detector drift are:minimized!Hence absorbances are more:accurate.Disadvantages <strong>of</strong> double beam designs:Higher Cost: More complicated designOften:Often:Two detectorsMore opticsPage 193 <strong>of</strong> 316

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