Hach DR/700 Procedures Manual page 330

ALUMINUM,
13.
Immediately
place the prepared
sample 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 10-mL sample
cells and proceed.
continued
14.
Press:
READ
The display will
count down to 0.
Then the display will
show the results in
mg/L aluminum.
Note: Clean the
graduated cylinder and
sample cells with soap
and brush immediately
following the test.
Note: For most accurate
results, determine a
reagent blank (using
demineralized water)
for each lot of AluVer 3
Aluminum Reagent
Powder Pillows.
Subtract this value from
each sample result
obtained with this lot of
reagent.
52-4