|
  
why clean water?
water processing
analysis of water
waterinfo
products
agreement
contakt
jobs
service
order a test
partners
|
|
Reverse-Osmosis Water
Report of the analysis from INSTITUT FRESENIUS AG
I. Biological parameter
Number of bacterial colonies in ml |
after 20 ± 4 h. |
after 44 ± 4 h. |
after 4 days |
Nutrient medium by 20°C |
0 |
0 |
0 |
Nutrient medium by 37 °C |
0 |
0 |
0 |
Indicator microbes such as escheria coli and coliform bacteria are below detectable levels.
II. Chemical parameter
Paremeter |
Symbol |
boundary concentration, mg/l |
result concentration, mg/l |
Arsenic |
As |
0,01 |
< 0,001 |
Lead |
Pb |
0,04 |
< 0,005 |
Cadmium |
Cd |
0,005 |
< 0,0005 |
Chromium |
Cr |
0,05 |
< 0,001 |
Cyanide |
CN |
0,05 |
- |
Fluoride |
F |
1,5 |
< 0,2 |
Nikel |
Ni |
0,05 |
< 0,02 |
Nitrat |
NO3 |
50 |
0,3 |
Nitrit |
NO2 |
0,1 |
< 0,005 |
Mercury |
Hg |
0,001 |
< 0,0002 |
Multi-ring aromatic hydrocarbons and chloro-organic compounds were not found.
General evaluation of water:
In accordance with German norms concerning mineral and table water, the water from the firm R.O. Quality Water GmbH is seen as perfect.
III. Physical-chemical result
Electrical conductivity |
µS/cm |
8 |
DIN EN 27888 |
Cations
Natrium (Na) |
mg/l |
1,4 |
DIN EN ISO 11885 |
Pothassium(K) |
mg/l |
0,3 |
DIN EN ISO 11885 |
Ammonium (NH4) |
mg/l |
< 0,02 |
DIN EN ISO 11732 |
Magnesium (Mg) |
mg/l |
0,1 |
DIN EN ISO 11885 |
Calcium (Ca) |
mg/l |
0,2 |
DIN EN ISO 11885 |
Iron (Fe) |
mg/l |
<0,005 |
DIN EN ISO 11885 |
Anions
Chloride (Cl) |
mg/l |
< 1,0 |
DIN 38405-1-2 |
Sulphat (SO4) |
mg/l |
< 1,0 |
DIN EN ISO 10304-1 |
Hydrogen carbonate (HCO3) |
mg/l |
5,0 |
DEV D8 |
Carbonate (CO3) |
mg/l |
< 3,0 |
DEV D8 |
The sum of the dissolved minerals substances is 7 mg/l. pH = 6,8.
|
|
