Product Overview
Devarda’s Alloy is a copper-aluminum-zinc alloy with a nominal composition of 50% Cu, 45% Al, and 5% Zn, supplied as reagent grade 20–100 mesh granules. It is a powerful reducing agent in alkaline solution and has been the standard reagent for reducing nitrates to ammonia since it was introduced in the 1890s.
In analytical chemistry, Devarda’s alloy is used to determine nitrate and total nitrogen in fertilizers, soils, water, and other samples. In alkaline solution the alloy reduces nitrate and nitrite to ammonia, which is then distilled and measured. It is also used in qualitative tests for nitrate in teaching laboratories.
The 20–100 mesh particle size provides a fast, complete reaction while remaining easy to weigh and dispense.
