... the influence of the nature of the analyte, supply light, temperature, humidity, rain and other quantitative indicators. 2. light source: 3500W ... /m2 @ 420nm; digital setting, closed-loop automatic compensation 5. blackboard temperature range: BPT: 40 to 75 ° C Accuracy: ± 3 ° ... 6. test positions temperature control: 25 to 50 ° C; resolution: 0.1 ° C; 7. the test positions humidity control: light cycle ...