Measurement range: 5 to 50 ppm Airflow speed and flow rate: 100 ml/min Measurement time: 3 minutes Comment: 1 Discoloration: Yellow → Dark brown Temperature and humidity correction: None Expiration date: Up to 2 years Subject gas: Carbon monoxide (in compressed air) Subject gas: Carbon monoxide (Airtech方法) 执行期(年):2 测量范围(PPM):5至50