Sciencemadness Discussion Board - Buying ground glass joints, hose barbs & other glass parts in manufacturing of glassware


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Sciencemadness Discussion Board » Engineering and Equipment » Reagents and Apparatus Acquisition » Buying ground glass joints, hose barbs & other glass parts in manufacturing of glassware

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RogueRose

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posted on 30-12-2017 at 10:37

Buying ground glass joints, hose barbs & other glass parts in manufacturing of glassware

I have a couple local glass blowers that I'd like to have do some work for me but I'm having a VERY tough time finding a place to by ground glass joints in any size by the smallest sizes like 10/14 or 14/18 that are used on marijuana pipes.

I'm looking for a nice selection if possible but it seems that if a company offers some, it is very limited selection and it is a dual male/female and is part of a longer tube or an odd config that doesn't seem useful and is annoying to work with .

I want to buy something like 20 - 24/40 male joints and 35 - 24/40 females and probably a bunch of others.

Also, does anyone have a good soruce of Boro glass in the states where a purchase of a case isn't necessary?

How does the glass from china compare toe the boro produced in the states of Europe (I'm talking about raw material tube form)? Anyone have any experience?

Bert

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posted on 30-12-2017 at 12:57

http://www.chemglass.com/connecting

In Chinese glass, as everything else, quality control is the buyer's responsibility. Good luck-

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RogueRose

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posted on 30-12-2017 at 19:33

Man I just found one site in the US that has sizes form 10/14 to 26/19 and about 8 sizes in between, nothing larger. Then on Aliexpress there are about 40+ different sizes from 10/14 to 50/60, It is a total nightmare deciding where to start, especially if I am going to have glass made or make my own (the easier stuff).

One thing I can say is that the 24/40 seems the most expensive unfortunately and that is what all my glassware is, save one piece. aliexpress seems to sell a lot of the 29/32 pieces but I'm not talking about ground joints only, I'm talking about full pieces.

NEMO-Chemistry

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posted on 30-12-2017 at 19:43

Quote: Originally posted by RogueRose

I have a real mix of sizes, i buy job lots of glass from closed labs or very old school stock, recently i purchased a large amount of small stuff (10 & 14 size) that are from 5ml - 100ml.

I have largely got around the problem by buying ground glass reducers/adapters. When i started collecting glass the decent Chinese stuff wasnt as common, if i was starting again i would probably go with 2 sizes, i like the 14 size for small scale, then maybe 24 for other stuff.

I dont know how many different sizes I got, I will try and get a pic to show you how i got around it.

I also have size 19!! I rarely see it now but its a pretty good size for medium scale stuff. Keep in mind when i started i didnt have a clue about size! I just brought what was cheap.

NEMO-Chemistry

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posted on 1-1-2018 at 08:26

Sorry Rose i lost this thread!! I got a couple of pics to show what I mean.

A good example of this is 5 glass filters for solids, these were dirt cheap because the ground glass size was not wanted by many, but as you can see in one the pics, i can use it with adapters to go from 34 down to a size 10 and all the sizes between!

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posted on 1-1-2018 at 08:29

some more gratuitous glass porn

Sciencemadness Discussion Board » Engineering and Equipment » Reagents and Apparatus Acquisition » Buying ground glass joints, hose barbs & other glass parts in manufacturing of glassware