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.
These tools come from the area of statistics and are used to help. identify quality problems in the production process as well as in the product itself. Statistical quality control is the subject of this chapter. Statistica1 quality control (SQC)is the term used to describe the set of statistical. tools used by quality professionals.