Summary
I tested with the following product of water filter, comparing to Tube water (control group).
As a environment we use a water case from PearlCo and this reagent for water hardness.
Test protocol is as follows :
- Repeat followings for each group
- Fill out test tube with filtered water to 5 [ml] mark
- Add titration solution drop by drop the while swirling test tube
- Count drops until color changes from RED to GREEN
- Since 1 drop of reagent express 1 degree dH (see the measurement), calculate each hardness.
The result shows Tube water is 14, BRITA is 8 and PealCo is 4.
According to this Hard-soft classification table, each shows “Very hard”, “Hard” and “Moderately hard”.
Since I use the same environment ( water pot ), I should use PearlCo as long as I want to avoid drinking hard water.
I cannot rule out the possibility just by this trial:
a filter from the same maker as water pot may enhance effect of filter.
Because they can fit each other rather than other makers.
Since I use the same environment ( water pot ), I should use PearlCo as long as I want to avoid drinking hard water.
I cannot rule out the possibility just by this trial:
a filter from the same maker as water pot may enhance effect of filter.
Because they can fit each other rather than other makers.
Drop count
|
Tube water
|
BRITA
|
PearlCo
|
0
|  |  |  |
1
|
SKIP
|  |  |
2
|  |  |  |
3
|
SKIP
|  |  |
4
|  |  |  |
5
|
SKIP
|  | |
6
|  |  | |
7
|
SKIP
|  | |
8
|
SKIP
|  | |
9
|  | ||
10
|  | ||
11
|  | ||
12
|  | ||
13
|  | ||
14
|  |
