ForMaxâ„¢ Black AP Substrate produces a brown-black precipitate that can be dehydrated, cleared and permanently mounted in organic media. This chromogen can be used in immunohistochemical or Western blotting applications. The stock solutions are provided in ReadyGoâ„¢ convenient dropper bottles to save time in application. Provides greater sensitivity than conventional AP substrates. Reagents are stable up to one year. Store at 2-4â€šÃ Ã¶âˆšÃ†â€šÃ Ã¶â€šÃ Ã¨â‰ˆÃÂ¬Â©C.