Hypokalemia occurs when the bloodâs potassium levels are too low. A normal level of potassium is 3.6-5.2 millimoles per liter. Levels below 3.6 are considered low. Anything below 2.5 millimoles per liter is very low (Mayo Clinic). Potassium is an electrolyte.
This means that when you buy a yard of fabric youâre getting 1 yard x the width of the fabric (usually measured in inches). The most common widths of fabrics are 36â³, 45â³, 54â³, 60â³, 72â³, and 118â³. Be sure you know what the usuable widths are as some fabrics have borders.
A bookcase may be any width, with only a small change in the cost of raw materials, until it reaches about 3 feet wide. There is no magic limit to the maximum width of a bookshelf, but normal construction (hardwood or plywood shelf with a solid edge for stiffness) works pretty well up to about 30 or 36 inches.