Fluoride, Pipet Method; Measuring Hints - Hach POCKET COLORIMETER II Instruction Manual

Fluoride, Pipet Method

For water, wastewater, and seawater
SPADNS Method* USEPA Accepted (distillation required)

Measuring Hints

• Remove liquid and fingerprints from the sample cells with a soft, dry cloth
before placing in the instrument.
• If samples cannot be analyzed immediately, see
page 1—30.
• SPADNS Reagent contains sodium arsenite. Final solutions will contain
arsenic (D004) in sufficient concentration to be regulated as a hazardous waste
for Federal RCRA.
Note:
The Pocket Colorimeter II is designed to measure solutions contained in sample cells.
dip the meter in the sample or pour the sample directly into the cell holder.
DO NOT
* Adapted from Standard Methods for Examination of Water and Wastewater.
(0.02 to 2.00 mg/L F
Sampling and Storage on
1—17
–
)
Method 8029