DI RECT READ ING TITRATOR IN STRUC TIONS
1. Fill the titration tube to the specified line with the water sample.
2. Add the reagents as specified in the instruction for the individual
test method.
3. Cap the tube with the special titration tube cap. Mix by swirling
gently.
4. Depress the plunger of the Titrator.
5. Insert the adapter tip into the spe cial plas tic plug in the ti trat ing
so lu tion bot tle.
6. Invert the bottle. Hold the bottle and
the Titrator firmly together. Slowly pull
out the plunger until the large ring on
the plunger is opposite the zero (0) line
on the scale.
7. If an air bubble appears in the Titrator
barrel or the adapter tip, partially fill the
barrel and pump the titration solution
back into the inverted reagent bottle to
expel the bubble.
NOTE: When filling the Titrator from a container without a
special plug, submerge the adapter tip below the surface of the
solution and pull out the plunger. Remove air bubbles.
8. Turn the bottle right side up and remove the Titrator.
9. Insert the adapter tip into the opening in the titrator tube cap.
Slowly depress the plunger to dispense the titrating solution. Gently
swirl the tube to mix the solution.
10. Continue adding the titrating solution until the specified color
change occurs. If the color change does not occur when the large
ring on the plunger reaches the bottom of the scale, refill the
Titrator to the zero line. Continue the titration until the color
change occurs.
11. Read the test result directly from the scale where the large ring on
theTitrator meets the Titrator barrel. If the Titrator was refilled to
reach the final color change, add the total amounts of titrant used
to determine the final test result.
12. If no ad di tional tests are to be made, dis card the re main ing ti trat ing
so lu tion in the Titrator. Do not re turn the ti trat ing so lu tion to the
re agent bot tle. Thor oughly rinse the ti tra tion tube and the Titrator.
Do not remove the plunger or the adapter tip from the Titrator.
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
BarrelPlunger Adapter tip
(20 pages)
(2 pages)
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