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Glass Identification - Post here for all ID requests => Glass => Topic started by: adam20 on June 24, 2011, 11:42:57 AM

Title: Heavy Glass Vase marked Foreign
Post by: adam20 on June 24, 2011, 11:42:57 AM

Very thick walled - 5" high and with scando looking shape to it - base conical and round top with polished rim - marked FOREIGN to base - does this mean its polish and what age is it - cost 50p so if its worthless no loss LOL

Thanks Adam

Title: Re: Heavy Glass Vase marked Foreign
Post by: chopin-liszt on June 24, 2011, 12:02:13 PM

It looks seriously like the bottom part of a small dessicator.

This is a bit of lab equipment - dessicating (hygroscopic) crystals are placed in the bottom section and a metal grid sits on the shelf edges above them. Then chemicals which are sensitive to atmospheric moisture can be stored, sitting on the grid. It should have a dome-shaped top, with flanged edges, which fits onto the flat flanges of the bottom part.

A silicon grease is applied to the flanges to create a seal. Quite often there is a neck-section on the top of the dome, into which a rubber bung with a hole in it can be put. If a glass tube is put through the bung, a rubber tube attached to that can then be attached to a vacuum pump and the whole thing evacuated of air.

Title: Re: Heavy Glass Vase marked Foreign
Post by: adam20 on June 24, 2011, 12:28:54 PM

Thanks

Wondered why the rim is matt ground seems to make sense now

Ah well

Title: Re: Heavy Glass Vase marked Foreign
Post by: wolkenreb on June 24, 2011, 01:27:07 PM

Did that just come from the top of your head Sue???? Wow, impressive!

Title: Re: Heavy Glass Vase marked Foreign
Post by: chopin-liszt on June 24, 2011, 02:25:59 PM

No, Nancy - I used to work in a biochemical pharmacology research lab. I used to used them. :smg: