LaMotte ALKALINITY TEST KIT AB-TAO User Manual
ALKALINITY TEST KIT
L
Mott
AUTOMATIC BURET METHOD
CODE 7129
QUANTITY CONTENTS CODE
2 x 250 mL *Alkalinity Titration Reagent *4015-K
100 BCG-MR Indicator Tablets T-2311-J
100 Phenolphthalein Tablets T-2246-J
1 Graduated Cylinder, 50 mL, glass 0418
2 Erlenmeyer Flasks, 125 mL, glass 0431
1 Automatic Buret, squeeze valve 0427
*WARNING: Reagents marked with an * are considered to be potential
health hazards. To view or print a Material Safety Data Sheet (MSDS) for
these reagents go to www.lamotte.com. To obtain a printed copy, contact
LaMotte by e-mail, phone or fax.
To order individual reagents or test kit components, use the specified code
number.
Read the LaMotte Automatic Buret Instruction Manual before
proceeding.
PRO CE DURE
1. Fill the graduated cylinder (0418) to the 50 mL line with sample
water. Transfer to a 125 mL Erlenmeyer flask (0431).
2. Add one Phenolphthalein Tablet (T-2246). If the solution turns
red, P Alkalinity is present; proceed to Step 3. If the solution is
colorless, P Alkalinity is zero; proceed to Step 4.
3. Fill buret (0427) with *Alkalinity Titration Reagent (4015). While
swirling flask, slowly add *Alkalinity Titration Reagent until red
color disappears. Record buret reading as Value P. Do not refill
buret if determining T Alkalinity.
NOTE: If chlorine levels greater than 2 ppm are present, the
chlorine should be neutralized before testing for T Alkalinity. Use a
dechlorinating agent, such as 1 drop of 0.1N Sodium Thiosulfate
(6155).
4. To the same flask add one BCG-MR Indicator Tablet (T-2311).
Solution will turn greenish-blue.
5. While gently swirling flask, titrate sample with *Alkalinity
Titration Reagent until greenish-blue color changes to pink. Record
buret reading as Value T.
6. Multiply Value P by 20. Record as ppm P Alkalinity as CaCO3.
Value P x 20 = P Alkalinity as ppm CaCO
3
7. Multiply Value T by 20. Record as ppm T Alkalinity as CaCO3.
Value T x 20 = T Alkalinity as CaCO
3
NOTE: Methyl Orange Indicator (2230) may be used in place of the
BCG-MR Indicator Tablets to run the test for Total Alkalinity. The
color change will be from yellow to orange-red at the endpoint.
LaMOTTE COM PANY
Helping Peo ple Solve An a lyt i cal Challenges
PO Box 329 • Chestertown • Mary land • 21620 • USA
800-344-3100 • 410-778-3100 (Out side U.S.A.) • Fax 410-778-6394
Visit us on the web at www.lamotte.co
SM
9.10
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