Abstract: A low beverage soluble iron content filter aid, especially diatomite, is disclosed, as is the method for its production, which comprises contacting the granular filter aid with tannic acid, gallic acid, or mixtures thereof, preferable in aqueous solution. Color control agents such as citric acid may also be present in the solution. The treated filter diatomite is useful in the filtration of vegetable based beverages, especially beer, wine, ale and fruit juices. The invention is also applicable to other filter aids which contain beverage soluble iron, such as perlite.

Abstract: A roof vent support arrangement for use in a roof structure including a roof deck and a built-up roof thereon and provided for supporting a vent pipe extending beyond the roof structure through an opening therein is disclosed herein. This arrangement includes a roof deck connector connected to the top surface of the roof deck directly over the vent opening in the deck and around the vent and a vertically adjustable tubular vent connector positioned over the built-up roof and around both the deck connector and vent. The arrangement also includes resilient members fixedly connected with the vent connector for allowing the deck connector to be readily inserted therein and, once inserted, for preventing its separation from the vent connector.