5
FILLING: Single-Use Disks
When the syringe is placed in the water sample, and the plunger is
pulled all the way up, the syringe will hold more than enough water
sample to adequately fill the disk. Hold the syringe vertically and
insert the tip into the fill hole in the disk. Press the plunger slowly and
smoothly to fill the disk.
1. Fill the disk using slow, even pressure. The
sample water will fill the spaces between
the baffles in a counterclockwise order.
Each space will fill from the bottom to the
top. Sample water should be added until the
sample water in the fourth chamber fills
to the
top
of the chamber slightly past the embossed
fill line. It is OK to fill slightly past the fill line.
Correct Fill
(Fill line)
2. Do not overfill the disk. If the disk is overfilled,
sample water will flow out of the overflow
hole in the center of the disk. The disk is not
leaking. Dry the disk and run the test.
Overfilled
(Dry disk before placing in meter)
3. Do not under fill the disk. If the disk is under
filled, the reagent chambers will not fill entirely
and results will be inaccurate.
Underfilled
4. Do not introduce air bubbles into the disk.
The reagent chambers will not fill entirely
and results will be inaccurate. As soon as a
bubble starts to form, pull back on the plunger
to draw the bubble out of the disk. Begin the
filling process again.
Air
Bubble
5. Wet disks should be dried thoroughly with a
lint free wipe. The disk should be handled by
the edges.
6. Disks should be filled and used within 10 minutes. They cannot be filled ahead of
time.
FILLING
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