OPTI.FORM PD 4 is a food grade product based on potassium lactate and sodium di-acetate. It is produced through fermentation of sugar. OPTI.FORM PD 4 complies with various food additive regulations and is suitable for food applications. As a food grade product, OPTI.FORM PD 4 provides benefits such as pH adjustment and preservation in food formulations without directly specifying the food name. It can help maintain the quality and extend the shelf life of products.