LaMotte Dissolved Oxygen Water Quality - Manual (Page 5)

TEST PROCEDURE
PART 1 - COLLECTING THE WATER SAMPLE
3
6.
Rinse the Water Sampling Bottle
(0688-DO) with the sample water.
1.
Remove the cap and allow the
bottle to fill.
3.
Tap the sides of the bottle to
dislodge any air bubbles.
4.
Tightly cap the bottle, and
submerge it to the desired depth.
2.
Replace the cap while the
bottle is still submerged.
5.
Retrieve the bottle and make
sure that no air bubbles are
trapped inside.