1—23
Bromine, Total, LR, continued
Standard Solution Method
Standard solutions for bromine or chlorine are difficult and time-consuming to
prepare. Errors can occur if attention to detail is not addressed during preparation
of the standards. Hach Company prepares the calibration curve under rigorous
analytical laboratory conditions. Hach strongly recommends using the factory
calibration.
A user calibration or a user-prepared bromine standard may be required by a
regulatory official or agency. Two options are available on the Pocket
Colorimeter™ II to meet this requirement.
A bromine standard may be prepared and used to validate the calibration curve
using the Standard Calibration Adjust feature (see page 2—13 for more
information.). The concentration of the prepared standard must be determined with
an alternate instrument such as a spectrophotometer, colorimeter, amperometric
titration, or by using another alternate method. The concentration of the bromine
standard for the low range procedure must be between 2.00 and 4.00 mg/L
bromine.
In addition, a user-generated calibration curve can be made and programmed into
the Pocket Colorimeter™ II. See User-Entered Calibration on page 2—15.
To Next Page
Loading...
