During the test formation of blue coloration indicates that the surface of the stainless steel does not yet pickled sufficiently . And if blue coloration does not appear which indicate surface has been satisfactorily pickled. A ferroxyl test is a test done only to "detect" contamination. Once contamination is detected, then a removal procedure is carried out. During the test formation of blue coloration indicates that the surface of the stainless steel does not yet pickled sufficiently . read more

Reagent of Hydrazine Test Kit Colorimetric Procedure The objective is to maintain a hydrazine residual between 0.05-0.2 ppm depending on operating pressure and boiler designe. Actual consumption is determined under operating conditions. A normal dosage is approximately 1 ltr. per day, depending of system layout. Hydrazine is a convenient reductant because the by-products are typically nitrogen gas and water. Thus, it is used as an ANTIOXIDANT, an oxygen scavenger, and a corrosion inhibitor in water boilers and heating systems. read more