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
Catalog
Manual
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 |
 2.2 ppm |
 |
No discolouration |
| Hydrogen Chloride |
1.6 ppm |
+ |
Pink at 2.0 ppm |
| Nitric Acid |
2.0 ppm |
+ |
Pink at 3.0 ppm |
| Sulphur Dioxide |
0.5 ppm |
+ |
Pink at 0.6 ppm |
| Nitrogen Dioxide |
5.0 ppm |
+ |
Pale pink at 5.5 ppm |
| Hydrogen Fluoride |
10.0 ppm |
+ |
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% |
