Hach DR/700 Procedures Manual page 678

COPPER, AUTOCATALYTIC,
ACCURACY CHECK
Check for accuracy by titrating a sample of the bath in use to assure that
the calibration is correct.
INTERFERENCES
Other blue-colored bath components will interfere to cause high results.
SUMMARY OF METHOD
Bath samples are acidified to destroy the color of the alkaline copper
complexes. The remaining color of the acidic copper solution is then
measured directly. Since different bath formulations cause slight
response variations, a calibration must be performed for the bath in use.
REQUIRED REAGENTS
Descriptions
Acid Reagent
Powder Pillows . . . . . . . . . 2 pillows . . . 50/pkg . . . . . . . . . 1042-66
Water, demineralized . . . . . . . . varies . . . . . . 4 L . . . . . . . . . . . . . 272-56
REQUIRED APPARATUS
Cap, tube, for 22758-00 . . . . . 3 . . . . . . . . . 25/pkg . . . . . . . . 14238-25
Clippers, for opening
powder pillows . . . . . . . . . 1 . . . . . . . . . each . . . . . . . . . . . . 968-00
COD Vial Adapter . . . . . . . . . 1 . . . . . . . . . each . . . . . . . . . . 46008-00
DR/700 Filter Module
Number 81.01. . . . . . . . . . . 1 . . . . . . . . . each . . . . . . . . . . 46281-00
Pipet, serological, 5 mL. . . . . . 1 . . . . . . . . . each . . . . . . . . . . . 532-37
Pipet Filler, safety bulb . . . . . . 1 . . . . . . . . . each . . . . . . . . . . 14651-00
Tube, culture, 16 x 100 mm. . . 3 . . . . . . . . . each . . . . . . . . . . 22758-00
OPTIONAL APPARATUS
Pipet, TenSette, 1 to 10 mL . . . . . . . . . . . . . . each . . . . . . . . . . 19700-10
Pipet Tips, for 19700-10 TenSette Pipet . . . . 50/pkg . . . . . . . . 21997-96
For Technical Assistance, Prices and Ordering
In the U.S.A. - Call 800-227-4224 toll-free for more information.
Outside the U.S.A. - Contact the Hach office or distributor serving you.
continued
Quantity
Per Test Unit
81-4
Cat. No.