Add 1-2 drops of RXSOL TK7 and mix with the stirring rod , If sample turns red / PINK ( which indicates presence of p-Alkalinity ) then follows 3rd step otherwise if sample remains colourless ( Record p-Alkalinity = 0 )
Calcium Test Kit is helpfull to determine calcium level in Boiler, Cooling, Aquarium Water. Very simple to use can be handle by simple colour determination test
RXSOL brand highly purified and well balanced Barium Chloride 10% solution chemically plays role during Sulfate Test, to pricipitate as Barium Sulfate crystal of uniform size.