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3 Cards in this Set
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Guidelines preservation temperature and hold time TOC's, HHA5's, and THM's |
TOC preserve with HCl cool to less than 4 degrees C hold time 28 days , THMs preservative HCl less than 4 degrees C 14 days hold time. Haa5 preservative ammonium chloride less than 4 degrees C hold time 14 or 28 days |
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What is chain of custody and record |
Establishes a legal record of sample collection and transfer. Must accompany the sample at all times. Must be on record for no less than three years. |
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Spectrophotometer is a process using light to measure an unknown analyte concentration |
The shorter the wavelength the more energy the photon have |
