Insulation copper funnel Laboratory teaching metal insulation funnel All copper Chemical laboratory equipment hot filter funnel

small: the diameter of the upper mouth is 75mm, the diameter of the inner mouth is 64mm, the thickness of the insulation layer is 10mm, the diameter of the lower mouth is 17mm, and the height is 103mm.
large: the diameter of the upper mouth is 100mm, the diameter of the inner mouth is 87mm, the thickness of the insulation layer is 13mm, the diameter of the lower mouth is 20mm, and the height is 120mm.

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