Scheduling zero wait batch processes involves various parameters of which, makespan is normally used as the deciding outcome parameter for selecting the optimum production sequence. Most of the currently available methods for determining makespan are based on complex mathematical programming techniques. The current research focuses at developing a novel method to determine makespan for zero wait batch processes using simple mathematics coupled with some rule based guidelines to be performed on a matrix containing the batch process recipes. The method is quite efficient and gives promising results with different batch process recipes.