Before agar, microbiologists had experimented with other foodstuffs as microbial media. They turned to substances rich in the starches, proteins, sugars, fats, and minerals that organisms need for growth, testing with broths, bread, potatoes, polenta, egg whites, coagulated blood serums, and gelatine. However, none worked particularly well: all were easily broken down by heat and microbial enzymes, and their surface, once colonized, became mushy and unsuitable for isolating microbes.
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The Hair screw tool is especially useful. This is built specifically to pick up long hair and pet hair without tangling. And if you suffer from allergies, the advanced whole-machine filtration captures 99.99% of particles as small as 0.3 microns and expels cleaner air.
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