Vạch chỉ thị: 0.2 ~ 5 ppm
Thang đo:
+ 0.2 ~ 5 ppm, bơm 2 lần
+ 5 ~ 10 ppm, bơm 1 lần
Thời gian lấy mẫu: 1.5 phút mỗi lần bơm
Chuyển đổi màu: vàng sang hồng
Hệ số biến đổi: 5% (0.2 ~ 5 ppm)
Số ống trong hộp: 10
Dùng thích hợp với bơm: GV-100S/110S
Detail
Performance
Measuring Range | 0.2 to 5 ppm | 5 to 10 ppm |
Number of Pump Strokes | 2 | 1 |
Correction Factor | 1 | 2 |
Sampling Time | 1.5 minutes per pump stroke | |
Detecting Limit | 0.05 ppm (n=2) | |
Colour Change | Yellow → Pink | |
Reaction Principle | Hydrogen Cyanide reacts with the reagent to form intermediate material which stains indicator pink . | |
Coefficient of Variation | 5% (for 0.2 to 5 ppm) | |
Shelf Life | 2 Years | |
Corrections for temperature & humidity | Unnecessary | |
Store the tubes at cool and dark place. |
Possible coexisting substances and their interferences (NOTE)
Substance | Concentration | Interference | Change colour by itself to |
Ammonia | ![]() |
![]() |
No discolouration |
Hydrogen Chloride | ![]() |
+ | Pink at 2.0 ppm |
Nitric Acid | ![]() |
+ | Pink at 3.0 ppm |
Sulphur Dioxide | ![]() |
+ | Pink at 0.6 ppm |
Nitrogen Dioxide | ![]() |
+ | Pale pink at 5.5 ppm |
Hydrogen Fluoride | ![]() |
+ | Pink at 15.0 ppm |
Hydrogen Sulphide | + | Pink |
Calibration gas generation | Permeation tube method |
TLV-TWA | TLV-STEL | Explosive range |
- | C 4.7 ppm | 5.6 to 40% |
- 质量承诺
- 正品保修
- 送货到家
- 交易简单化