With the ACU-1 Black & White Film Developer Concentrate, you can achieve maximum acutance and ultrafine grain film development, ensuring optimum quality and effective speed in your photography endeavors. This superior product is designed to enhance the speed ratings of your film, allowing you to utilize slower films while still achieving superior resolving power and finer grain. This was a feature previously only attainable with high-speed films. The ACU-1 Film Developer Concentrate is specifically crafted for photographers who value convenience and efficiency. It is a one-time use preparation solution, offering easy-to-follow dilution ratios for hassle-free usage. This concentrate makes up to 1 quart of stock solution, providing ample quantity for your film developing needs. Whether you're a professional photographer or a hobbyist, the ACU-1 Black & White Film Developer Concentrate is a reliable choice for achieving high-quality, fine-grain images. Its unique formulation and user-friendly design make it a standout in the realm of black and white film development.