Guar gum, a plant colloid, costs less than agar and is better suited for growing thermophilic bacteria, but is also more difficult to handle, being more viscous and less transparent. The bacterial polysaccharide xanthan is cheaper as well but forms weaker jellies that, as with carrageenan, might result in puncturing its surface. Other colloids, like alginate (from brown seaweed) and gellan gum (from a bacterium), don’t set solely based on temperature and require additives for gelation. These additives might interfere with microbial growth and make the preparation of those jellies less handy than agar plates.
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You might be looking into ergonomic accessories to help with a specific problem, such as carpal tunnel or tendonitis. Or maybe you’re simply looking for a way to make long hours at your desk more comfortable. It can help to know some of the terminology and reasons behind various features, which we explain below. Just keep in mind that new equipment alone won’t solve the problem. Changing positions, doing regular stretches and taking walk breaks will all go a long way towards making you feel better while you work.
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