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Boiling Flask

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BOILING FLASK, Bomex.  Borosilicate, Tooled Mouths, Flat Bottoms, Long Necks. #770050 Bomex - Flask, Boiling - 50ml Capacity, #2 Stopper Size #770100 Bomex - Flask, Boiling - 100ml Capacity, #3 Stopper Size #770250 Bomex - Flask, Boiling - 250ml Capacity, #6 Stopper Size #770500 Bomex - Flask, Boiling - 500ml Capacity, #6 Stopper Size #771000 Bomex - Flask, Boiling - 1000ml Capacity, #8 Stopper Size