Vạch chỉ thị: 0.1 to 2.5%
Thang đo:
+ 0.01 to 0.05%, bơm 2 lần
+ 0.05 to 2.5%, bơm 1 lần
+ 0.05 to 2.5%, bơm 1/2 lần
Thời gian lấy mẫu: 1 phút mỗi lần bơm
Chuyển đổi màu: hồng sang xanh nhạt
Phương trình phản ứng: C2H5OH + Cr6+ + H2SO4 → Cr3+
Hệ số biến đổi: 15% (for 0.05 to 0.5 %), 10% (for 0.5 to 2.5 %)
Số ống trong hộp: 10
Dùng thích hợp với bơm: GV-100S/110S
Catalog
Manual
Performance
| Measuring Range |
| 0.01 to 0.05% |
0.05 to 2.5% |
2.5 to 7.5% |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
1 minute per pump stroke |
| Detecting Limit |
0.004% (n=2) |
| Colour Change |
Pink → Pale blue |
| Reaction Principle |
C2H5OH + Cr6+ + H2SO4 → Cr3+ |
| Coefficient of Variation |
15% (for 0.05 to 0.5 %), 10% (for 0.5 to 2.5 %) |
| Shelf Life |
3 Years |
| Corrections for temperature & humidity |
Temperature correction is necessary |
| Store the tubes at cool and dark place. |
Possible coexisting substances and their interferences
(NOTE)
| Substance |
Concentration |
Interference |
Change colour by itself to |
| Carbon monoxide |
|
No |
No |
| Carbon dioxide |
|
No |
No |
| Alcohols |
|
+ |
Pale blue |
| Calibration gas generation |
Static gas dilution method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| - |
1000ppm(2014) |
3.3 to 19% |
