pulmonary tuberculosis is the most common form of tuberculosis bacteria that cause tuberculosis could also spread from the lungs to other parts of the body through blood or the lymph fluid an active tb disease of the lungs airways or larynx is considered to be highly contagious
Before extrusion, the HDPE can be pigmented to yield color-coded pipe. Common PEX tubing colors are natural (hazy clear, unpigmented), white, black, red and blue. The red and blue colors are used to help plumbers and homeowners distinguish between hot and cold water supply lines.
PEX is chemically treated high density polyethylene that's flexible, heat resistant, and doesn't develop pinholes or corrode. Many do-it-yourselfers are transitioning to PEX from copper pipes. To make the installation process go as smoothly as possible, it's important to remember these dos and don'ts.