Hach DR/700 Procedures Manual page 675

COPPER, AUTOCATALYTIC
For finishing baths
Colorimetric Method*
1.
Pipet 5.0 mL of
demineralized water
into a 16-mm screw-
top culture tube (the
blank).
Note: Because of
variation between
plating bath
formulations, perform a
new calibration for each
bath. Prepare and store
the calibration as
directed under
Calibration following
these steps.
Note: Analyze samples
immediately for best
results.
*User calibration required; range is approximate.
2.
Pipet 3.0 mL of
bath sample and
2.0 mL of
demineralized water
into a second 16-mm
screw-top culture
tube (the prepared
sample).
81-1
Method 8117
(0 to 3.00 g/L)
3.
Add the contents
of one Acid Reagent
Powder Pillow to
each tube. Mix
gently.