Connecting adapters with taper interchangable joints,used to connect two apparatus with 14/20,19/22,24/40,29/42 standard taper joints.
The connecting glass adapters are made of borosilciate glass 3.3 by hand-blowing,annealed at 800 degree Celsius ,can be heated directly in an open flame and can withstand typical laboratory thermal variations in Chemistry processes like heating and cooling.
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