Used for the quantitative detection of copper nitrite reductase enzyme activity in soil samples, this ELISA research kit enables researchers to assess microbial denitrification potential in environmental studies. It is particularly valuable in agricultural and ecological research to monitor nitrogen cycling, evaluate soil health, and study the impact of fertilizers or pollutants on microbial communities. The kit supports high-throughput analysis, making it suitable for large-scale environmental monitoring and research projects focused on sustainable land management and greenhouse gas emission (such as nitrous oxide) mitigation.