Cell biology (formerly called cytology, from the Greek ÎºÏÏÎ¿Ï, kytos, vessel) is a branch of biology that studies the different structures and functions of the cell and focuses mainly on the idea of the cell as the basic unit of life.
(B) For a cylinder having a water capacity over 12 pounds-- (1) By hydrostatic test without determination of expansion (modified hydrostatic test method). A retest must be performed 12 years after the original test date and at 7-year intervals; or (2) By hydrostatic test using the water jacket method. A retest must be performed 12 years after the original test date and at 12-year intervals thereafter.
Get a Low-Cost Radon Test Kit. Short-term and Long-term test kits are available for purchase through the American Lung Association of the Upper Midwest. Short-Term Test Kits. A short-term test is performed for at least two days, but no more than 90 days. A typical short-term test, including those offered through this site, last 2-7 days. A short-term test will produce results that represent a snapshot of the radon levels during a specific time period.