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The Acrylic Glass Tube is more durable than the included Borosilicate Glass Tube and is a nice option to have for the Hydrology 9. We highly recommend you pick up one of these for occasions where you leave your home with the Hydrology 9.
It measures 7 cm in length and 4,5 cm in diameter.
Intended for use with: Hydrology 9 NX.
