Không cần dùng thêm bơm. cắm thẳng vào cốc dung dịch
Vạch chỉ thị: 10 ~ 100 ppm
Thang đo: 10 ~ 100 ppm
Thời gian lấy mẫu: 2 phút
Chuyển đổi màu: Trắng sang nâu
Phương trình phản ứng: S2- + Pb(CH3COO)2→ PbS
Số ống trong hộp: 10
Catalog
Performance
| Measuring Range |
10 to 100 ppm |
| Sampling Time |
2 minutes |
| Detecting Limit |
1 ppm |
| Colour Change |
White → Brown |
| Reaction Principle |
S2- + Pb(CH3COO)2→ PbS |
| Shelf Life |
3 Years |
| Corrections for temperature & humidity |
Unnecessary |
| Store the tubes at cool and dark place. |
Possible coexisting substances and their interferences
(NOTE)
| Substance |
Concentration |
Interference |
Changes colour by itself to |
| Cl- |
≧ 15000 ppm |
+ |
No |
| CrO42- |
≧ 100 ppm |
 |
Yellow |
| CO32- |
≧ 500 ppm |
+ |
No |
| SO32- |
≧ 100 ppm |
 |
No |
| S2O32- |
≧ 100 ppm |
+ |
No |
Detector tubes for dissolved substances
(i.e. in solution).
Dissolved sulphide detector tube
211H / 211M / 211 / 211LL

|
 |
Liquid detector tube
| Ozone: |
218 |
| Chloride ion: |
221L / 221LL |
| Mercury: |
271 |
| Hexavalent chromium: |
273 |
| Bivalent iron: |
281 |
| Copper: |
284 |
| Zinc: |
285 |
| Nicke: |
291 |
|
To measure, simply immerse the detector tube in a sample of liquid (placed in a beaker or other container). Anyone can measure concentrations quickly, easily and accurately on site.
* Adjustment for pH is required when measuring with liquid detector tubes.