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A COD test typically involves digestion of a water sample in a sealed vial with potassium dichromate and sulfuric acid at 150oC for 2 hours.
The DR3900 Laboratory VIS Spectrophotometer is a benchtop visible spectrum, split beam spectrophotometer for laboratory water analysis.
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Place of Origin: Zhejiang, China ; Product name: Glass Test Tube ; Material: Borosilicate 3.3 Glass ; Size: 16*100mm ; Bottom: Round bottom/Flat bottom.
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