I carry out the following titrations:
1. Determination of calcium hardness with EDTA 0.01 M in samples of drinking water, waste water and pool water
2. Determination of total hardness hardness with EDTA 0.01 M in samples of drinking water, waste water and pool water
3. Standardization of an EDTA solution with CaCO3
4. Determination of total alkalinity with H2S04 0,01N
5. Standardization of n H2S04 solution 0,01 N (Tris buffer solution)