GCAP has developed a quick reference ammonia saturation poster to be hung in the engine/control room. Are you tired of digging for the cards in your wallet or trying to navigate through the app on your phone we got a solution for you! Call us today to get yours shipped out for free. (first 100 only) Also on the chart is quick reference formulas and the position for the most common used solenoids in the industry to be in AUTO disposition.