LaMotte P & T Alkalinity Titrator Test Kit – 4533-DR

In stock

This test kit is designed to measure the total alkalinity with a direct reading titrator method. It has a range of 0 to 200ppm and has the ability to perform 50 tests.

LaMotte P & T Alkalinity Titrator Test Kit – 4533-DR


  • 100 Phenolphthalein Tablets
  • 100 BCG-MR Indicator Tablets
  • 60 mL Alkalinity Titration Reagent B
  • 1 Test Tube, 5-10-15 mL, glass, w/cap
  • 1 Direct Reading Titrator, 0-200 Range

This kit uses titrations with standard acid to the phenolphthalein (P) and total (T) alkalinity endpoint. Where hydroxyl (OH) alkalinity is determined directly, the sample is penetrated with barium to precipitate carbonates. All results are expressed as CaCO3 and this test kit contains 50 tests at 200ppm.


1. Fill test tube (0778) to 5 mL line with sample water.
2. Add one Phenolphthalein Tablet (T-2246). Cap and mix until tablet disintegrates. If solution does not turn red, P Alkalinity is 0. If solution turns red, proceed to Step 3.
3. Fill the Direct Reading Titrator (0382) with *Alkalinity Titration Reagent B (4493DR). Insert Titrator into center hole of test tube cap.
4. While gently swirling tube, slowly press plunger to titrate until red color disappears. Read the test result directly from the scale where the large ring on the Titrator meets the Titrator barrel. Record as ppm P
Alkalinity as CaCO3. EXAMPLE: Plunger tip is 3 minor divisions below line 80. The test result is 80 plus 12 (3 divisions x 4) equals 92 ppm.
5. If plunger tip reaches the bottom line on the Titrator scale (200 ppm) before the color change occurs, refill the Titrator and continue the titration. When recording test result, be sure to include the value of original amount of reagent dispensed (200 ppm). NOTE: Do not move Titrator plunger after the P Alkalinity endpoint has been obtained. The titration is continued in the T Alkalinity procedure.


6. Being careful not to move plunger, remove Titrator and cap from test tube containing sample that was titrated in Step 4.
7. Add one BCG-MR Tablet (T-2311). Cap and shake until tablet disintegrates. Solution will turn green-blue.
8. Reinsert Titrator in cap and continue titration until color changes from green-blue to pink. Read the test result directly from the scale where the large ring on the Titrator meets the Titrator barrel. Record as ppm T Alkalinity as CaCO3. Be sure to include in test result value the total amount of titration reagent dispensed (i.e. see Step 5).
9. If only Total Alkalinity is to be tested, perform Steps 1,7 and 8 only, using a full Titrator in Step 8.


  • Test System: P & T Alkalinity Direct Reading Titrator
  • Range/Sensitivity: 0-200 ppm/4 ppm as CaCO3
  • # Tests (# reagents): 50 at 200 ppm (3)

Unit Ship Weight: 1 lb

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