|
TEST
DATA
Bacteria
Decomposition Test
Test Procedure:
-
Pipette
0.2mg of bacteria suspension on a test porcelain tile and a
resin plate (50mm×50mm size)
-
The
test substrates are covered with a piece of polyethylene film.
-
Light
of 500 LUX exposes the test glass for 24 hours. The test needs
to be conducted in an environment where temperature is a
constant 35℃.
-
Count
the number of survived bacteria
-
In
order to convert the number of bacteria in 1 ml, use SCDLP
culture medium and measure the number on the test materials by a
pour-plate culture way.
Bacteria
test result on coated tile with TiO2
| Type
of Bacteria |
Titanium
Dioxide |
Immediately
after illumination (number/ml) |
24
hours later (Group 1) |
24
hours later (Group 2) |
Average |
| E.
coli |
TPX-85 |
3.5
x 105 |
<
10 |
<
10 |
<
10 |
| None |
3.5
x 105 |
5.0
x 106 |
6.1
x 106 |
5.6
x 106 |
| ST.
auresu |
TPX-85 |
3.5
x 105 |
<
10 |
<
10 |
<
10 |
| None |
3.5
x 105 |
6.1
x 104 |
6.7
x 104 |
6.4
x 104 |
Tested
by Kyoto Microorganism Research Center
Bacteria
decomposition
test result on
photocatalyst porcelain tile
| Type
of Bacteria |
Titanium
Dioxide |
Immediately
after illumination (number/ml) |
24
Hours later (number/ml) |
%
Killed |
| E.
coli |
None |
3.5
x 105 |
2.0
x 107 |
- |
| TO |
3.5
x 105 |
<
10 |
>
99.9% |
| PTA |
3.5
x 105 |
<
10 |
>
99.9% |
| MRSA |
None |
1.9
x 105 |
9.0
x 104 |
- |
| TO |
1.9
x 105 |
<
10 |
>
99.9% |
| PTA |
1.9
x 105 |
<
10 |
>
99.9% |
Tested by
Japanese chinaware examination association
Bacteria
decomposition
test result on
photocatalyst resin plate
| Type
of Bacteria |
Titanium
Dioxide |
Immediately
after illumination (number/ml) |
24
Hours later (number/ml) |
%
Killed |
| E.
coli |
Coated |
1.1
x 106 |
<
10 |
99.9
% |
| None |
1.1
x 106 |
1.8
x 107 |
- |
| MRSA |
Coated |
4.4
x 105 |
<
10 |
99.9
% |
| None |
4.4
x 105 |
9.9
x 105 |
- |
| P.
aeruginosa |
Coated |
2.2
x 105 |
<
10 |
99.9
% |
| None |
2.2
x 105 |
2.6
x 106 |
- |
Tested by food
inspection center of Osaka hygienic food association
TOP ^
Oil
Decomposition Test
TOP
^
Test Procedure:
|
Supplied material:
|
Tiles
coated with TiO2 photocatalysis. They were dried at a room
temperature after coating. |
|
Malodorous substances:
|
- NH3 (ammonia)
- (CH3)3N (trimethylamine)
- H2S (hydrogen sulfide)
|
|
Measurement method:
|
Infused
malodorous substances with an initial concentration of 30ppm
into four "five liter" containers in which the
photocatalyst tiles were installed. Two fluorescent lights
placed 150cm from tiles were used in each container. The
residual concentration was measured after ten minutes, half
hour, one, two and five hours using the gas detector
tube"Kitagawa model". |
Test Results
| Time |
|
Hydrogen
Sulfide (H2S) |
Ammonia
(NH3) |
Trimethylamine
(CH3)3N |
| Immediately
after illuminating |
Residual
Concentration (ppm) |
30.0 |
30.0 |
30.0 |
| 10
minutes later |
Residual
Concentration (ppm) |
27.5 |
3.5 |
4.4 |
| Adsorptive
Rate (%) |
8.3 |
88.3 |
85.3 |
| 30
minutes later |
Residual
Concentration (ppm) |
27.4 |
2.5 |
2.7 |
| Adsorptive
Rate (%) |
8.7 |
91.7 |
91.0 |
| 1
hours later |
Residual
Concentration (ppm) |
27.1 |
1.9 |
2.6 |
| Adsorptive
Rate (%) |
9.7 |
93.7 |
91.3 |
| 2
hours later |
Residual
Concentration (ppm) |
25.0 |
1.9 |
2.0 |
| Adsorptive
Rate (%) |
16.7 |
93.7 |
93.3 |
| 5
hours later |
Residual
Concentration (ppm) |
18.9 |
1.9 |
2.0 |
| Adsorptive
Rate (%) |
37.0 |
93.7 |
93.3 |
Measurement;
Far Infrared Rays Application Research Center
TOP
^
Test
Procedure
-
Inside of blue dots line is
coated with TiO2.
-
The red ink is diluted
one-twentieth with water
-
A
UV light with intensity of 1mW/cm2 was used for this
test
 |
Immediately after irradiation
|
 |
10 minutes later
|
 |
20 minutes later
|
 |
30 minutes later
|
 |
40 minutes later
|
TOP ^
|
