12ml COD Test Tube on Sale
The wear of the COD tube will also affect the measurement results. In order to reduce wear as much as possible, the seriously worn COD tube should be eliminated in time. When cleaning, avoid rubbing and washing the digestive tube with a test tube brush, which can easily cause scratches and affect color comparison.
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The wear of the COD tube will also affect the measurement results. In order to reduce wear as much as possible, the seriously worn COD tube should be eliminated in time. When cleaning, avoid rubbing and washing the digestive tube with a test tube brush, which can easily cause scratches and affect color comparison.
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