1 Wisconsin Heat Awareness Day will be observed on Thursday, 13 June 2013. 2  Wisconsin, along with the rest of the nation, observes Lightning Awareness Week from 23 to 29 June 2013. 3  Since Wisconsin borders on two of the Great Lakes, rip currents can pose a hazard to swimmers.
Growth of obligate anaerobes. The mixture of necessary nutrients can be used as a liquid medium, or a solidifying agent can be added. Agar agar is a natural polysaccharide produced by marine algae and is the most commonly used solidifying agent added to media (end concentration usually 1.5 % w/v). If hydrolysis of the agar is suspected, a silica gel is used as a replacement solidifying agent.
Such a medium normally consists of a mixture of protein digests (e.g., peptone, tryptone) and inorganic salts, hardened by the addition of 1.5% agar. Standard or general purpose media will support the growth of a wide variety of bacteria â for example: TSA. A medium may be enriched by the addition of blood or serum â we use sheepâs blood agar. Selective media contain ingredients that inhibit the growth of some organisms but allow others to grow.