Studies on the Durability of Roller Pump (V)

On the Corrosion Resistance of Niresist by Agricultural Chemicals and Urine of Dairy Cow

Abstract

The corrosion resistance of NIRESIST were studied for 450 times, using eight kinds of agricultural chemicals and urine of dairy cow.
Three kinds of aqueous dilution were taken respectively.
The loss of NIRESIST increase with lower dilution exclusive of Mercury-Bordeaux mixture.
The loss of NIRESIST increase with time in the following order, below (7) is almost non-corrosive.
(1) Wettable copper compounds “DOITSU Bordeaux”> (2) Wettable tin compound “SUZUZAI”> (3) Organic mercury compounds “FUMIRON Tablet”> (4) Wettable Captan compounds “ORTHOCIDE”> (5) Wettable copper-mercury compounds “Mercury Bordeaux”> (6) Wettable sulphur compounds “SARUTON 90”> (7) Urine of dairy cow> (8) Organic mercury compounds “RUBERON Tablet”> (9) Organic mercury emulsifiable compounds “MICROZIN 3”.