| 详细介绍： 美国CHEMetrics K-1803 二苯基卡巴仪器比色分析包
Carbohydrazide Vacu-vials Kit
Catalog No. K-1803
Range: 0.10-2.50 ppm
Method:PDTS
Kit comes in a cardboard box and contains everything needed to perform up to 29 tests (except distilled water): thirty ampoules, Activator Solution, 25 mL sample cup, ampoule blank, and instructions.
Vacu-vials Kits require the use of the V-2000 Photometer or a spectrophotometer capable of accepting a 13 mm diameter round cell. Instrument sold separately.
Vacu-vials® for Instrumental Colorimetric Analysis
测试步骤：
Visual Kits| Range |
MDL |
Method |
Kit Catalog No. |
Refill Catalog No. |
| 0-0.50 & 0.50-4.0 ppm |
0.05 ppm |
PDTS |
K-1805 |
R-1805 |
Instrumental Kits| Range |
Method |
Kit Catalog No. |
| 0.10-2.50 ppm |
PDTS |
K-1803 |
Method
Carbohydrazide is added to boiler system water as an oxygen scavenger to control corrosion. It is a safer alternative to hydrazine, which is toxic. Carbohydrazide reacts with oxygen at low temperatures and pressures. The products of the reaction are volatile and do not contribute dissolved solids to the boiler water. Like hydrazine, carbohydrazide will also passivate metal surfaces.The PDTS Method
Reference: G. Frederick Smith Chemical Co., The Iron Reagents, 3rd ed., p. 47 (1980).The test kits employ the PDTS chemistry. Carbohydrazide reduces ferric iron to the ferrous state, and the ferrous iron reacts with PDTS (3-(2-pyridyl)-5,6-bis(4-phenylsulfonic acid)-1,2,4-triazine disodium salt) to form a peach-pink colored complex in direct proportion to the carbohydrazide concentration. Test results are expressed as ppm (mg/L) carbohydrazide.
美国CHEMetrics中国代理商：上海益朗仪器有限公司。 |
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