This standard applies to both non-exothermic and exothermic specimens at low temperatures [with rapid or gradual temperature changes (see 8.2.2 and 8.2.8). ] and a test method that combines depressurization.
JIS C 60068-2-40:1995 history
1995JIS C 60068-2-40:1995 Environmental testing Part 2: Tests, Test Z/AM: Combined cold/low air pressure tests