1.Before starting your experiment - test the airtightness of your sampling pump! -
Tips for detector tube reading:
When the end of the colour change layer is flat, simply read the value at the end.
When the end of the colour change layer is slanted, read the value in the middle of the slant.
When the demarcation of the colour change layer is pale, the mean value between the dark and the pale layer ends is taken.
TIP FOR EASIER READING
It is convenient to mark the colour change with a pen as soon as finishing the sampling.
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