Tender For corrigendum : supply of a synthatic pyrethroid water dispersible powder or wetable powder used for residual spray for killing mosquitoes confirming to following who specification, cyfluthrin 10 % wp who/specn.385/wp,or lambda cyhelothrin 10 % wp/who/specn.463/wp ordeltamethrin 2.5 % wp-who/specn.333/wp or alphacypermethrin 5 % wp/who/specn.454 wp .