Hach DR/700 Procedures Manual page 315

POLYACRYLIC ACID,
and Haas Company. After separation from the sample, the pAA is
eluted off the column and the concentration is determined
colorimetrically.
Calibrations are based on Rohm and Haas Company Acrysol LMW (low
molecular weight) polyacrylic acid products. Because commercially
available polyacrylic acid can come in many strengths, preparation of
the standards used for the calibrations was based on a 100% total solids
basis and 100% active polymer. This method can be adapted for most
other low molecular weight polyacrylic acids, polyacrylates or
associated copolymers used as commercial scale inhibitors. For
accurate work, diluted standards prepared from the product in use would
be used to establish the calibration. The concentration of the polymer in
solution should be reported, if possible, on a dry-weight basis.
REQUIRED REAGENTS
Polyacrylic Acid Reagent Set (30 Tests) . . . . . . . . . . . . . . . . . . 22252-00
Includes: (1) 22253-32, (1) 22762-42,
(1) 22763-42, (1) 22256-53
Description
Buffer Solution, pH 2.5 . . . . . 1 mL . . . . . . 100 mL MDB . . . 22253-32
Polyacrylic Acid 1 Reagent . . . 2 mL . . . . . . 100 mL . . . . . . . . 22762-42
Polyacrylic Acid 2 Reagent . . . 2 mL . . . . . . 100 mL . . . . . . . . 22763-42
Polyacrylic Acid
Eluant Solution . . . . . . . . . . 30 mL. . . . . . 1000 mL . . . . . . . 22256-53
REQUIRED APPARATUS
Cylinder, mixing,
tall form, 25 mL . . . . . . . . 2 . . . . . . . . . each . . . . . . . . . . 21190-40
DR/700 Filter Module
Number 50.01. . . . . . . . . . . 1 . . . . . . . . . each . . . . . . . . . . 46250-00
Flask, erlenmeyer, 50 mL . . . . 3 . . . . . . . . . each . . . . . . . . . . . . 505-41
Polyacrylic Acid
Apparatus Set . . . . . . . . . . 1 . . . . . . . . . each . . . . . . . . . . 22257-00
contains:
Fitting-Tube Assembly . . . . . . . . . . . . . each . . . . . . . . . . 22266-00
LC Cartridge . . . . . . . . . . . . . . . . . . . . . each . . . . . . . . . . 22264-00
continued
Quantity
Per test Unit
50-65
Cat. No.
Cat. No.