The price and performance of a Hach DR-2700, a Hach 2010, a Thermal Electron Spectronic 20D+, and 2 identical light emitting diode (LED) spectrophotometers for the determination of total iron (Fe) by the 1,10-phenanthroline method [36].
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V0 = blank voltage.
创建时间:
2020-01-29



