Ligh Fastness test methode

1. SOLARBOX 3000
Filter UV : S307 (Outdoor)
Irradiation Range : 300- 800 nm
Position Potentiometer : 4 to 530 W/m2 & 10 to 1000 W/m2 (arrange Test Hour Speed)
(Irradiation Level)
Based On the Standard ASTM D3424, gives an indicate of average daily radiation received in Miami, Florida.
Singapore or (ASEAN Country), Okinawa are subtropical test site are generally hot and humid through the
whole year).
Average daily radiation in Miami is 1 MJ/m2 (295-400nm) it is 4 – 5 more severe than Europe.
Table comparison between Natural condition in subtropical and European site and Solarbox.
Average Daily Average daily Daily radiation Daily radiation
Irradiation Range in Solarbox. in Solarbox
radiation Miami Radiation Europe
550 W/m2 (295-800 nm) 1000 W/m2 (295-800 nm)
295- 400 nm 1 MJ/m2 0.22 MJ/m2 5.3 MJ/m2 9.6 MJ/m2
295- 800 nm 9.2 MJ/m2 2.0 MJ/m2 50.4 MJ/m2 88.3 MJ/m2
The conclusion is that 1 hour exposure at 550 W/m2 in solarbox is equivalen to 24 hour in Europe and
to 5.3 hours in Miami (ASEAN Country). The acceleration factor May be nearly doubled increasing
Irradiance up to 1000 W/m2.
1 Hour Using Irradiance Level of 550 W/m2 will be equivalen to 5.3 Hours.
1 Hour Using Irradiance level to 1000 W/m2 about 10.6 Hours. (Edson Use this adjustmen)
Exposure Temperature can accelerate the test Speed.( Edson Not Adjust Temperature Machine).
Light Fastness range (Efective Hours):
5 : 1 Month : 30 Day X 8 hrs = 240 hrs (will test about 23 Hours In Solarbox)
5.6 : 3 month : 3 X 30 Day X 8 Hrs = 720 Hrs (will test about 68 Hours In Solarbox)
6.7 : 6 month : 6 X 30 Day X 8 Hrs = 1440 Hrs (will test about 136 Hours In Solarbox)
7-8 : 9 month: 9 X 30 Day X 8 Hrs = 2160 Hrs (will test about 203 Hours In Solarbox)
-- > LF 6 Will Test Average 1440 hrs (will test about 136 hrs in Solarbox –long as 5 day + 6 hrs)
-- >LF 7 Will test Average 2160 hrs (will Test about 203 hrs in Solarbox – long as 8 day + 4 hrs)
Ho Chi Minh City,
30 May 2007
Ir.Sugeng Endarsiwi
Head of Printing Ink Division