Step0 : Chemical reagents/solutions required
Burette
Pipette
Conical
Flask
Micro
pipetteBeaker
Volumetric Flask
Step1 : Chemical reagents/solutions required
Ammonia buffer
EBT indicator
EDTA solution
Step2 : Select the water sample
select this sample
select this sample
select this sample
Step3 : Pipette out 25 ml water in a conical flask
pipette out liquid
pour liquid
Step4 : Add 1 ml ammonia buffer solution in the conical flask to adjust pH (10±0.1) of the sample
click to suck liquid
click to pour liquid
Step5 : Add 2-3 drops of EBT indicator in the sample conical flask
click to suck liquid
click to pour liquid
Step6 : Titrate the sample with 0.01M standard EDTA solution until the wine red color changes permanently into blue color
click to place funnel
click to pour in dye
click to remove funnel
click to place flask
start titration
stop titration
Titration Complete
Step7 : Observation and result
EDTA used =
Sample taken = 25 ml
Hardness of (as CaCO3) = mg/l