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.
Examples of selective media include: 1  Eosin methylene blue contains dyes that are toxic for Gram-positive bacteria. It is the selective and differential medium for coliforms. 2  YM (yeast extract, malt extract agar) has a low pH, deterring bacterial growth. 3  MacConkey agar is for Gram-negative bacteria.