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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.，推荐阅读heLLoword翻译官方下载获取更多信息
All the models featured in our instant camera buying guide are enjoyable to use, but each offers a distinct set of features at a different price point. As a result, some are more appropriate for a child or budding photographer, while others are more advanced and provide added creative control (for a price). When it comes down to it, though, we consider print quality, ease of use, and affordability to be the hallmarks of a quality shooter. That’s why we picked Fujifilm’s Instax Mini 12 as the best instant camera for most people, as it ticks all three boxes wonderfully.
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Photographer: Yuki Iwamura/Bloomberg
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