Tintometer Lovibond MD 100 Manuel page 5

Fluoride L
0.05 - 2 mg/L F
SPADNS
Material
EN
Required material (partly optional):
Reagents
SPADNS Reagent Solution
SPADNS Reagent Solution
Calibration Standard Fluoride
Preparation
1. A user calibration (see photometer manual) must be carried out before the
measurement.
2. The same batch of SPADNS reagent solution must be used for both the user
calibration and test (see photometer description). The user calibration process needs
to be performed for each new batch of SPADNS reagent solution (see Standard
methods 20th, 1998, APHA, AWWA, WEF 4500 F D., S. 4-82).
3. For the user calibration and test, the zeroing and test must be carried out with the
same vial, since the vials may have small tolerances.
4. The calibration solution and the water samples to be tested should have the same
temperature (± 1 °C).
5. The test result is highly dependent on exact sample and reagent volumes. Sample
and reagent volumes should always be measured using a 10 ml or 2 ml volumetric
pipette (class A).
6. Seawater and waste water samples must be distilled.
7. It is better practice to use special vials with a larger volume.
6
Fluoride L / M170
-
Packaging Unit
250 mL
500 mL
30 mL
EN Method Reference Book 1.0
M170
F
Part Number
467481
467482
205630