All Dicalite Diatomaceous Earth (DE) Flux-Calcined products (except WB6) are considered a “direct-run” product. This means that the plant is able to produce the product as the desired product coming out of the kiln. As such the properties of these products can be directly controlled ensuring less variation in product parameters. Many other high-flow rate DE products are actually by-products, and not the direct run (or primary) product. By-products are produced in less quantity, and with lesser quality than a direct run product. In addition, it is more difficult to control the product parameters which translates into a wider variation in product quality, and therefore less quality control. The high-grade DE mined from the deposit at our Burney, CA location, in addition to the direct run processing, means that most our products are more consistent on our customers’ filters allowing less adjustment due to diatomaceous earth variations. This allows the customer to focus efforts on process variations without concern for the additional variations from their filter aid.