A regulator comprised of a housing having an ingress for connection to a source of gas at a first pressure and an egress adapted for supplying gas at a lower pressure than the first pressure. A knife associated with a respective hook assembly, and is reciprocally mounted and inclined with respect thereto. The device is particularly suitable to assist in de-contamination of limbs prior to surgery thereon. The first PE network element receives OAM packets each including a pseudowire identifier from the second PE network element over the negotiated pseudowire. Multiple indexes enable a combined prefix title and full-text content search of the database, accessible from a single search interface. A method is also provided to raise the pH of a consumable food or beverage product by mixing an effective amount of the liquefied acidity reducing formulation with a food product prior to consumption.