美國CHEMetrics K-1803 二苯基卡巴儀器比色分析包

產(chǎn)品價格：	999/人民幣
最后更新：	2013-08-25 14:53:44
產(chǎn)品產(chǎn)地：	美國
發(fā)貨地：	上海 (發(fā)貨期：當(dāng)天內(nèi)發(fā)貨)
供應(yīng)數(shù)量：	不限
有效期：	長期有效
最少起訂：	1
瀏覽次數(shù)：	92

公司基本資料信息

上海益朗儀器有限公司
丁成峰先生經(jīng)理
會員[試用會員產(chǎn)品]
郵件dcf0135@163.com
手機(jī)13701600767
電話
傳真
地址臨夏路256號上海電子商城5號樓904室

產(chǎn)品詳細(xì)說明

美國CHEMetrics K-1803 二苯基卡巴儀器比色分析包

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
測試步驟：

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, 3^rd 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.
美國CHEMetrics中國代理商：上海益朗儀器有限公司。

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