Specifications provide a written description of the project that compliments the graphic drawings, describing the physical properties and performance characteristics of the materials to be used in the project.
PEG: Stands for percutaneous endoscopic gastrostomy, a surgical procedure for placing a feeding tube without having to perform an open laparotomy (operation on the abdomen). The aim of PEG is to feed those who cannot swallow. PEG may be done by a surgeon, otolaryngologist (ENT specialist) or gastroenterologist (GI specialist). It is done in a. hospital or outpatient surgical facility. Local anesthesia (usually lidocaine or another spray) is used to anesthetize the throat.
Chemical uses. 1  Because PEG is hydrophilic molecule, it has been used to passivate microscope glass slides for avoiding non-specific sticking of proteins in single-molecule fluorescence studies. 2  Polyethylene glycol has a low toxicity and is used in a variety of products.