Mono AEC/Plus is a single, highly stable, AEC chromogen/substrate liquid solution. When used in conjunction with immunoperoxidase detection systems, AEC produces a red colored end product, yielding strong contrast when combined with a blue hematoxylin counterstain. AEC has been well accepted among histotechnologists because it is less chemically hazardous than DAB. Specimens stained using Mono AEC/Plus cannot be dehydrated in ethanol and must be mounted in an aqueous-based mounting medium such as CC/Mount (GTX03598).