EPA Method 340.2
ALS - Columbia offers EPA Method 340.2 testing at these laboratories:
|Kelso, Washington Laboratory|
|Rochester, New York Laboratory|
Method information displayed is provided for informational purposes only. No warranty (express or implied) is made as to the website accuracy, completeness, or applicability (such as the age of a method and whether or not it applies to your project). Please contact us for assistance.
View Actual EPA Method 340.2 (PDF File)
EPA Method 340.2:
Fluoride by ISE. Official Name: Fluoride (Potentiometric, Ion Selective Electrode)
Fluoride is determined potentiometrically using a fluoride electrode in conjunction with a standard single junction sleeve-type reference electrode and a pH meter having an expanded millivolt scale or a selective ion meter having a direct concentration scale for fluoride.
This method determines fluoride in drinking, surface, and salin waters; domestic and industrial wastes.
Methods for the Chemical Analysis of Water and Wastes (MCAWW) (EPA/600/4-79/020)
(A) Extreme pH: Extreme pH interferes. pH should be between 5-9.Polyvalent cations: Polyvalent cations of Si4+, Fe3+, and Al3+ interfere by forming complexes with fluoride.A pH 5.0 buffer with a strong chelating agent eliminates interferences.
Maximum Holding Time:
28 days (MCAWW, Table 1).
0.1 - 1,000 mg/L
Precision and accuracy values were calculated using interlaboratory data from EPA-managed Water Pollution (WP) performance evaluation studies.
Issued 1971; Editorial Revision 1974
Fluoride - Potentiom
Instrument used for this test:
At least 1 analytes can be tested by ALS - Columbia using EPA Method 340.2. Please contact us for all available analytes which can be tested by EPA Method 340.2.
<-- Search All Test Methods
Suggestions? The test methods page continues to expand and improve. If you have suggestions for improvement, we would enjoy hearing from you. Please contact the webmaster here.