In situ analysis of bottled water line operators

2. • Well water: Any
underground water
• Artesian well water:
Underground water under
pressure with a confining
layer of rock or clay.
• Spring water: Underground
water that flows naturally to
the surface.
• Mineral water:
Underground water with
high mineral content.
Minerals may not be added.

3. • Turbidity
• Color
• Odor
• Taste

4. Color Odor
The solution may
not
have any smell.
Or else, it is
contaminated.
Turbidity

5.  Taste
The bottled water shouldn’t have any
taste.
 pH
Introduce a piece of paper in the
solution, compare the colour with the
standard colours, trying to find a
conclusion.
Universal indicator paper

6. • pH
• Alkalinity
• Conductivity
• Hardness
• Suspended Solids

7. Conductivity
Introduce the
electrode in the
solution, wait for the
value to stabilize.
Conductivity meter

8. [HCl] = 0,0245M
Alkalinity
150 mL (Sample)
TA(indicator : phenolphthalein) , pH = 8,3
Pink  Colorless
TA =
𝐶 ×[𝐻𝐶𝑙] ×50 000
𝑉(150 𝑚𝐿)
(mg CaCO3/L)
C – volume required in the the titration
HCl

9. [HCl] = 0,0245M
Alkalinity (continuing titration)
150 mL (Sample)
TAC (indicator: methyl orange), pH = 4,4
Orange  Red
TAC =
(𝐶+𝐷) ×[𝐻𝐶𝑙] ×50 000
𝑉(150 𝑚𝐿)
(mg
CaCO3/L)
D – volume required in the the titration
HCl

10. [EDTA] = 0,013M
Hardness
50 mL of sample
Indicator: ETB
Blue  Pink
Hardness =
𝐸×100[𝐸𝐷𝑇𝐴] ×1 000
𝑉(50 𝑚𝐿)
(mg CaCO3/L)
E – volume required in the the titration

11.  Total Suspended Solids
1. Weigh the filter paper (dried in an oven and placed and
desiccator until constant weight, B);
2. Pipetting a sample volume (150 mL) for the filter;
2. Proceed to the suction of the sample;
3. Place in the oven at 103 - 105°C.
4. Allow to cool in desiccator to constant weight, A.
mg TSS/L =
(𝐴−𝐵)×1 000
𝑉(50 𝑚𝐿)

12. 1- Which are the organoleptic parameters that are used to analyse
water?
A. Total Suspended Solids.
B. Turbidity, color, odor and pH.
C. Turbidity, color, odor and taste.
D. Conductivity and Alkalinity.
2- Which are the global parameteres that are used to analyse
water?
A. Turbidity, color, odor and pH.
B. pH, alkalinity, conductivity, hardness and total suspended solids.
C. Hardness.
D. Turbidity, color, odor and taste.