Taylor K-8000, User Manual, Page: 74 / 100

3-48 TTi
®
Colorimeter User’s Manual
Part 3 Colorimeter Operation
EDIT A USER-DEVELOPED TEST
To edit a user-developed test, click on the test to be edited; then click on Edit in User-Developed Tests. Edit
test information and SAVE. Click on the icon next to User Developed Test to transfer the updated user-
developed test file to the instrument.
DELETE A USER-DEVELOPED TEST
To delete a user-developed test, click on the test to be deleted; then click on Delete in User-Developed Tests.
A warning that the selected test is about to be permanently deleted will appear on the screen.
Click on DELETE and transfer the updated user-developed test file to the instrument.
TEST INSTRUCTION EXAMPLE
FRONT
Alkalinity Total 250
Range(s): 0-250 ppm CaCO
3
, 0-305 ppm HCO
3
-
, 0-150 ppm CO
3
2-
Colorimeter Series
Instruction #5078
Procedure
Interferences
The following analytes were tested to the levels listed and
found not to cause any interference up to the specified
values:
Biguanide – 50 ppm
Bromine – 10 ppm
Chlorine – 10 ppm
Copper – 0.5 ppm
Cyanuric Acid – 200 ppm
Hardness, Calcium (CaCO
3
) – 1000 ppm
Iron, Ferric – 0.5 ppm
Iron, Ferrous – 0.5 ppm
1. Turn on the Colorimeter.
2. Select a test menu (ALL TESTS, RECENT TESTS, or
FAVORITES) containing Alkalinity Total 250 using

.
3. Select Alkalinity Total 250 using

; then press
ENTER .
4. Select a chemical form (CaCO
3
, HCO
3
, CO
3
) for
expression of test results using  .
5. Rinse and fill 25 mm sample cell to 10 mL mark with
sample; then cap.
6. Insert sample cell into sample cell compartment. Align
marks per User’s Manual.
7. Select ZERO using

; then press ENTER . Zero
will be displayed
8. Remove sample cell from sample cell compartment;
then remove cap.
9. Add 1 drop Alkalinity Total 250 - Reagent A; then
swirl to mix thoroughly.
10. Add 1 mL Alkalinity Total 250 - Reagent B; then cap
and swirl to mix thoroughly.
11. Insert sample cell into sample cell compartment. Align
marks.
12. Select READ using  ; then press ENTER . The
instrument will read the sample and the result will be
displayed.
(over)
Test Method Bromocresol Green
Bromocresol green, a pH-dependent indicator, is used to determine concentrations of alkalinity. Differing concentrations of alkalinity alter the pH and therefore change the color of the
bromocresol green. This color change is proportional to the concentration of alkalinity in a sample.
2 ppm total alkalinity as CaCO
3
Estimated
Detection Limit
Precision Using two lots of reagent and an alkalinity standard solution of 100 ppm total alkalinity as CaCO
3
an individual analyst obtained a standard deviation with the instrument of ± 1 ppm total
alkalinity as CaCO
3
.
BACK
Application
Ordering Info
01/13
Recreational Water
Reagent Pack
K-8024 Alkalinity Total 250
Formulated for exclusive use with Taylor’s TTi™ Colorimeter.
Reagent Pack Components
R-8024A Alkalinity Total 250 - Reagent A
R-8024B Alkalinity Total 250 - Reagent B
31 Loveton Circle, Sparks, MD 21152 U.S.A.
800-TEST KIT (837-8548) • 410-472-4340
customerservice@taylortechnologies.com
Instruction #5078
4