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Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 3 One 1-week cycle of samples’ exposure in Xenotest, by modified EN 927-6 [18]

From: Effect of vegetable oils on the colour stability of four tropical woods during natural and artificial weathering

Weathering in Xenotest: one cycle = 1 week (168 h)

Functions

1st step

24 h

Temperature 45 ± 3 °C, water spray (off), UV (off)

2nd step

A

2.5 h

Temperature 50 ± 3 °C, water spray (off), UV Irradiance 0.55 W m−2 at 340 nm

B

0.5 h

Temperature 20 ± 1 °C, water spray (on), UV (off)

A + B

3 h

 

Sub-cycle (A + B): 48 sub-cycles × 3 h of one, i.e. together 144 h

  1. According to EN 927-6 [18]: UV lamps are used instead of an 1800 W xenon lamp
  2. The prescribed parameters for the test chamber in the 2nd step/A are as follows: temperature = 60 ± 3 °C, UV irradiance = 0.89 W m−2 at 340 nm
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