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.
No, there has never been a US President from an independent party; however, at the time of his presidency, George Washington was not affiliated with a political party at all, as there were no parties in the brand new United States of America.
John Adams. Liberty, according to my metaphysics is a self-determining power in an intellectual agent. It implies thought and choice and power. Before becoming President in 1797, John Adams built his reputation as a blunt-speaking man of independent mind. A fervent patriot and brilliant intellectual, Adams served as a delegate from Massachusetts to the Continental Congress between 1774 and 1777, as a diplomat in Europe from 1778 to 1788, and as vice president during the Washington administration.