Several properties of agar render it a superior jelly. Agar isn’t broken down by microbial enzymes apart from a few species (including bacteria living in marine and freshwater habitats), and it dissolves well in boiling water, making it easy to sterilize. The jelly doesn’t react with the ingredients of a broth, whose composition can be adjusted to meet the nutritional requirements of different microbes, and sets to a firm gel without the need for refrigeration.
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Schaeffler is hoping to use robots in its own factories – for example, to load freshly made parts from conveyor belts into washing machines, prior to packaging them for shipment. "We are already experiencing a labour shortage," says Kehr. I ask whether humans who currently are doing this task will be retrained for other roles in the factory and Kehr says, "Absolutely."