can anyone identify this glassware
- Thread starter scrapman1077
- Start date
Help Support Gold Refining Forum:
thistle funnel
Not exactly sure in what means they are used and not sure where they could be used in refining.
They would make a pretty big pipe though.
They would make a pretty big pipe though.
KalleMP
Active member
- Joined
- Oct 5, 2015
- Messages
- 35
Thistle funnel is the name we learnt at school.
Over the years I have only ever seen them used as liquid addition funnels into over pressure flasks.
The long stem lets you build up quite a bit of head and the thistle will hold the amount of reaction liquid above the stem opening if the pressure keeps building up.
These are old school before addition funnels with ground glass joints, you need rubber or cork bungs and all the attendant excitement that goes with fitting them.
If you want to try your hand at glass working you could use these as very good starting point for air locks that are common in home brewing and other gas liberating reactions.
EDIT:
Here is a typical glass airlock with the same style funnel.
Another use was in an osmosis experiment with semipermeable membranes that were stretched over the opening and held in place with an elastic or string in the groove.
Angular / side glass airlock
Over the years I have only ever seen them used as liquid addition funnels into over pressure flasks.
The long stem lets you build up quite a bit of head and the thistle will hold the amount of reaction liquid above the stem opening if the pressure keeps building up.
These are old school before addition funnels with ground glass joints, you need rubber or cork bungs and all the attendant excitement that goes with fitting them.
If you want to try your hand at glass working you could use these as very good starting point for air locks that are common in home brewing and other gas liberating reactions.
EDIT:
Here is a typical glass airlock with the same style funnel.
Another use was in an osmosis experiment with semipermeable membranes that were stretched over the opening and held in place with an elastic or string in the groove.
Angular / side glass airlock
Last edited:
scrapman1077
Well-known member
Thanks for the replies guys. I got them in a lager load of scrap.
