Why is it required to invert the ‘hot’ vial cuvette after digestion?

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Best practices – pipetting the sample, cleaning and inverting the vial (cuvette)

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How to Analyze Chemical Oxygen Demand in Water

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How to run a Free Chlorine Test using the Hach DR 900 Colorimeter

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Hach COD Vials High Range 0-1500mg

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Why is it important to cool down the vials (cuvettes) to room temperature before reading the result?

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Why is it required to invert the vial cuvette a few times before adding the sample?

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Cod read after heating use hach dr 900.

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Hach DR900 Multiparameter Portable Colorimeter - Overview (Video)

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Hach DRB200 LTG082.53.30001 Digital Reactor Block: 9 x 16 mm vial wells, 2 x 20 mm vial wells

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