With this piece, which has been specially developed for test tube colonies, you can easily offer food in the test tube. For example, use a syringe to offer a drop of honeydew, sunburst or another nutrient onto the tray. It also functions as a coupling piece.
Suitable for a hose of 9 and 10 mm (outer diameter)
Suitable for our 16 x 150 mm test tubes
Mixed colors
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