Measurement range: 1 to 40 ppm Scale range: 2 to 20 ppm Suction count: 1/2, 1 (standard), 2 times Number of measurements for one box: 10 times Expiration date: 36 months from production Temperature and humidity correction: None Interference gas: Ozone, sulfur dioxide, nitrogen dioxide,等 检测极限:0.25 ppm(供应两次) 目标气体:硫化氢 目标气体:硫化氢 执行期(年):3 测量范围(PPM):1至40