Direct Reading Titrator Method (9859A70 and A71) For determining total (T) alkalinity in water Range of 0 to 200 ppm as CaCO₃ in 4 ppm increments Employs APHA Method 403. Sufficient for 50 tests at 200 ppm. Direct Reading Titrator (9859B10) For determining phenolphthalein (P)…