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Untitled Document
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| Two-bed Deionization System & Mixed-bed Deionization system have unreasonable facts such as regular or irregular Shut down time for Regeneration, chemicals & labors waste of regeneration, and problems of serious wastewater per regeneration, etc.
However, Reverse Osmosis system & Mixed-bed Deionization System are an epoch-making method of construction to cover the problems of Two-bed Deionization System & Mixed-bed Deionization system. Also, in case of small size system for laboratory, it is possible to produce ultra pure water continuously because of regularly exchanging Polisher resin by non-regeneration type |
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| DESCRIOTION |
CAP |
ASTM |
ACS |
USP |
NCCLS |
| ¥° |
¥± |
¥² |
¥° |
¥± |
¥² |
¥³ |
¥° |
¥± |
¥² |
Conductance Micromhos/cm max. |
0.1 |
0.5 |
1.0 |
0.06 |
1.0 |
1.0 |
1.0 |
2.0 |
0.15 |
0.1 |
0.5 |
10 |
Resistivity
Megohm
(§Û)/cm |
10 |
2.0 |
0.1 |
16.67 |
1.0 |
1.0 |
1.0 |
- |
1.0 |
- |
- |
- |
Total Matter
mg/L max. |
- |
- |
- |
0.1 |
0.1 |
0.1 |
2.0 |
- |
1.0 |
- |
- |
- |
Silicate §
/L max. |
50 |
100 |
10000 |
ND |
ND |
ND |
|
10 |
|
50 |
1000 |
1000 |
KMnO4
retention
|
- |
- |
- |
60 |
60 |
10 |
10 |
60 |
10 |
- |
- |
- |
time minutes
min
Ammonia mg/L
max |
- |
- |
- |
- |
- |
- |
- |
- |
0.3 |
- |
- |
- |
Culture/
Colony Count |
10cf
m/m |
104cf
m/m |
no
lim it |
- |
- |
- |
- |
|
|
10cf
m/ml |
no
lim it |
no
lim it |
| pH |
not
used |
not
used |
5.0-
8.0 |
not
used |
not
used |
6.2-
7.5 |
5.0-
8.0 |
|
5.0-
7.0 |
not
used |
not
used |
5.0
-8.0 |
| Copper |
|
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ND |
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Filter Rotings,
Microns |
0.2 |
|
|
0.2 |
|
0.45 |
|
|
0.45 |
0.2 |
|
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TOTAL MATTER
mg/L (Max.) |
- |
- |
- |
0.1 |
0.1 |
0.1 |
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PARTICLE
EA/L
0.2§ (Max.) |
0.0 |
- |
- |
- |
- |
- |
- |
|
|
0.0 |
- |
- |
BACTERIA
CFU/ml (Max.) |
10 |
104 |
- |
0 |
10 |
- |
- |
- |
- |
0.05 |
0.1 |
1.0 |
SiO2
mg/L (Max.) |
0.05 |
0.1 |
1.0 |
0.0 |
0.0 |
10.0 |
- |
- |
- |
- |
- |
- |
CAP
College of American Pathologists
ASTM
American Society for Testing and Materials
AC
American Chemical Socity
USP
The United States Pharmacopia
NCCLS
National Committee for Cinical Laboratory Standard
the requested quality of Ultra pure water for research & lab
In case of USA, there are three types of condition, that is ASTM, CAP, NCCLS, about the requested quality of Ultra pure water for research & Lap, even though each country & the related organization have different standard & gap more or less. |
Thesis per type |
¢Ñ Type ¥°
Laboratory ultra-pure Water
Automic Absorption, Flame Spectrometry, Enzyme Studies
In case of genetics & high-tech microbiology, the standard of ultra pure water have over 10 §Û /cm in Electrical Resistivity and under 50ppb in TDS
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¢Ñ Type ¥±
Laboratory ultra-pure Water
In case of Glass product & washing of bowl, the standard of ultra pure water has about 1.0 ¢¦ 2,0 §Û / §¯ in Electrical Resistivity. And this standard comes under CAP Type ¥± , ASMT Type ¥±¢¦¥² or Type ¥± of NCCLS. |
¢Ñ Type ¥²
Laboratory ultra-pure Water
It is the pure water in TDS 2.0 ¢¦ 5.0ppm(Electrical Resistivity0.1 ¢¦ 0.2 §Û / §¯ ). It is the suitable level for simple test, washing glass product, or cleaning bowl, etch. It comes under CAP Type ¥² , ASTM Type ¥³ or NCCLS Type ¥²
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