The basic components of procedure trays include, at a minimum: items for skin preparation; Items for draping; supplies to give local anesthetic; items for surgical closure. Skin preparation items would include 2x2 or 4x4 non-sterile gauze sponges or 6 cotton-tipped applicators that can be used to prepare the skin with an antiseptic solution. Usually the gauze are picked up by a sponge stick and used to paint the antiseptic on the skin.
Water Supply. The supply line to the toilet is standard 1/2-inch copper pipe. This standard is used throughout the home to supply faucets, showers and any other appliance requiring water, including the washing machine. This 1/2-inch pipe connects to the home's 3/4-inch water pipes. The water supply line does not run directly to the toilet, however.
Threadless copper pipe, often referred to as TP pipe, is a seamless copper pipe material manufactured to the requirements of ASTM B 302 - Standard specification for Threadless Copper Pipe, Standard Sizes. This pipe may be manufactured from either of two alloys, C10300 or C12200 with C12200 being the most popular.