Test
|
Composition 1
|
Composition 2
|
Composition 3
|
Composition 4
|
Composition 5
|
pH
|
8.90
|
8.75
|
8.60
|
7.60
|
7.50
|
Total Dissolved Solids (mg/L)
|
282.30
|
212.00
|
148.33
|
56.67
|
55.67
|
Tubidity (NTU)
|
8.60
|
5.73
|
4.31
|
0.97
|
0.43
|
Conductivity (mA/(V*m)
|
54.90
|
39.33
|
28.07
|
10.77
|
10.63
|
Alkalinity (mg CaCO3/L)
|
176.00
|
134.00
|
102.67
|
26.33
|
25.50
|
Acidity (mg CaCO3/L)
|
N/A
|
N/A
|
N/A
|
-23.33
|
-21.50
|
Hardness (mg CaCO3/L)
|
181.98
|
132.30
|
48.80
|
48.80
|
48.80
|
Hardness Classification
|
Very Hard
|
Hard
|
Slightly Hard
|
Slightly Hard
|
Slightly Hard
|
Color (PtCo)
|
10.00
|
7.33
|
5.33
|
4.00
|
3.33
|
Odor
|
Slight Smell
|
No Smell
|
No Smell
|
No Smell
|
No Smell
|
RAVA Fontus Engineering Inc. Updated: 5/1/14
Test
|
Aquafina
|
Dasani
|
365 Spring Water
|
pH
|
6.58
|
6.03
|
7.35
|
Total Dissolved Solids (mg/L)
|
0.01
|
0.04
|
0.08
|
Tubidity (NTU)
|
0.21
|
0.22
|
0.43
|
Conductivity (mA/(V*m)
|
3.52
|
7.44
|
14.30
|
Alkalinity (mg CaCO3/L)
|
Below Detectable Limits
|
Below Detectable Limits
|
0.71
|
Acidity (mg CaCO3/L)
|
Below Detectable Limits
|
Below Detectable Limits
|
-0.71
|
Hardness (mg CaCO3/L)
|
0.00
|
12.35
|
24.04
|
Hardness Classification
|
Soft
|
Soft
|
Slightly Hard
|
Color (PtCo)
|
2.00
|
7.33
|
5.33
|
Odor
|
No Smell
|
No Smell
|
No Smell
|
Test Results
Popular Water Bottle Brands
Mineral Compositions
A water quality analysis of pre-existing water bottle brands that utilize RO was a deliverable of this project. Testing of 3 water bottle brands were conducted to complete the water quality analysis as well as provide a base water that will influence the design of the mineral compositions.
In order to determine the optimum mineral composition, a series of testing was conducted on 5 different mineral compositions. Compositions 1,2, and 3 had a pH that was not within the EPA reccomended pH range of 6.5 to 8.5, so those alternatives were not chosen. Composition 5 was chosen as the optimum mineral composition because it had the lowest turbidity, total dissolved solids, conductivity, and color.
Photo Credit: Google
RAVA Fontus Engineering Inc.
