Hach DR/700 - Page 253

50-3
CYANURIC ACID, continued
7. Add the contents
of one Cyanuric Acid
2 Reagent Powder
Pillow to each cell.
Cap and invert several
times to mix.
Note: A white turbidity
will form if cyanuric
acid is present.
8. Wait 3 minutes.
Note: Complete Steps
9-12 within 5 minutes
after the 3-minute
waiting period.
9. Place the standard
treated in Step 7 in
the cell holder.
Note: Typical indoor
lighting permits the
DR/700 to operate with
the cell compartment
open. In bright
sunlight, it may be
necessary to close the
cell compartment cover.
Transfer 10 mL of the
blank and 10 mL of the
sample to a
10-mL sample cell and
proceed.
Note: If the display is
blank, repeat Steps 3
and 4.
3 minutes