Không cần dùng thêm bơm. cắm thẳng vào cốc dung dịch
Vạch chỉ thị: 1 ~ 50 mg/L
Thang đo: 0.5 ~ 50 mg/L
Thời gian lấy mẫu: 2 phút
Chuyển đổi màu: Trắng sang vàng
Phương trình phản ứng: Cr6+ + Pb(CH3COO)2 → PbCrO4
Số ống trong hộp: 10
Catalog
Performance
| Measuring Range |
0.5 to 50 mg/L |
| Sampling Time |
2 minutes |
| Detecting Limit |
0.4 mg/L |
| Colour Change |
White → Yellow |
| Reaction Principle |
Cr6+ + Pb(CH3COO)2 → PbCrO4 |
| Shelf Life |
3 Years |
| Corrections for temperature & humidity |
Water 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 |
| Cl- |
≧ 20 mg/L |
+ |
No |
| CH3COO- |
≧ 20 mg/L |
+ |
No |
| NO3- |
≧ 30 mg/L |
+ |
No |
| S2- |
≧ 0.5 mg/L |
Unclear |
Brown ( ≧ 0.5 mg/L ) |
| SO42- |
≧ 10 mg/L |
+ |
No |
| PO43- |
≧ 5 mg/L |
+ |
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.