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A design for an air‐cooled test tube with a series of sockets and plugs (`crystallization socket‐outlet adaptor') installed in a laboratory furnace is presented. The setup allows easy regulation and simultaneous crystallization tests of a series of different crystallization parameters and substances, enabling fast studies of single‐crystal growth.

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A design for a modular and adaptable air cooler (crystallization lattice bridge) installed in a laboratory furnace is presented. The setup allows easy regulation and simultaneous crystallization tests of a series of different temperature gradients, shapes of crystallization fronts and rate intervals in crucible columns, enabling rapid acquisition of crystals in school laboratories.

A design for an air-cooled tube (`crystallization incubator') installed in a laboratory tube furnace is presented. The setup allows regulation and simultaneous crystallization of several substances at different temperature gradients and rate intervals, with the purpose of obtaining crystals.