Pyrex Hydrometer Cylinder, 1000 mL

Description

Pyrex Hydrometer Cylinder, 1000 ml.  Condition is "New" in original shelf pack. Although the manufacturer's intended use.is as a vessel in which to float a hydrometer (to determine the density of liquids), I find these to be very useful for carrying our demonstrations in which some substance is to be combusted in a particular atmosphere.  For example, if the cylinder is filled with oxygen, phosphorus, lowered in the bowl of a deflagration spoon will burn extremely brightly and rapidly.  Glowing splints will burst into flame.  Antimony powder, when sprinkled into the cylinder which has been filled with chlorine gas, will burst into flame.  Many metals will react in a similar fashion.
This is also great for filling with immiscible liquids of different densities and adding various dyes to each layer.  If the dyes are only soluble in one particular layer, even if this is shaken, the layers will resettle displaying the original colored bands.  Most chemistry teachers or professors will undoubtedly be able to come up with myriad addditional uses.
Basically, this is identical to a 1000 mL graduated cylinder - it just doesn't have any graduations..  Millipore Sigma sells these new for .30.  You can get this for about a fifth of that price (.99).