About this objectA long-neck, clear glass Pyrex flask with plastic stopper - '$13 No. MA 5643'
Painted on side in white is brand 'Corning Pyrex TC 100ml 20 degrees C'
A small, oval shaped white patch has the number '9' hand written in biro.
On the back of flask is glued a paper label with 'Buffer ph 410' typed on it.
The flask is clear but where the stop fits in there is a ridge in the stem.
