1 Next add your ingredients: the compost and kelp or molasses. 2  Let the tea brew for about 24 hours. 3  Make sure the opening to the air pump is distributed evenly (cheapest is an air stone) and secured to the bottom, so it does not get pushed to the top overnight. 4  This will keep the tea sufficiently aerobic.
One example of a technical control is data encryption. Other examples are network intrusion detection systems, passwords, firewalls and access control lists. Continue Reading. Technical controls secure computing system and information access through strategically designed software and hardware.
Adapted from: http://www.isixsigma.com/tools-templates/control-charts/when-recalculate-control-. limits/. When to Recalculate Control Limits. John J. Flaig February 26, 20100. A problem that has often confronted practitioners using control charts is when to consider recomputing the control. limits. Iâve asked this question to several experts and researched it in numerous SPC texts.