What are the plastic connectors called (for glassware)?

Question

I can't remember for the life of me, and google isn't making it easy. e.g. the things labeled 24/40 etc., as in this picture:

score 17 · Accepted Answer · answered Jun 28 '17 at 21:18

17

Those are called Keck Clips. 24/40 is the size of the joint.

answered Jun 28 '17 at 21:18

DSVA

in mm, I guess? – khaverim Jun 28 '17 at 21:23
1

@khaverim very likely, as it is a Swiss idea (https://worldwide.espacenet.com/publicationDetails/originalDocument?CC=US&NR=4442572A&KC=A&FT=D&ND=&date=19840417&DB=&locale=#) – Buttonwood Jun 28 '17 at 21:26
1

Yes more or less, it's not the exact value. https://en.wikipedia.org/wiki/Ground_glass_joint describes the different types and the german wikipedia page actually shows the biggest diameter mm values. It's all in ISO 383 – DSVA Jun 28 '17 at 21:27

score 6 · Answer 2 · answered Jun 28 '17 at 21:18

6

They are called Keck clamps.

answered Jun 28 '17 at 21:18

Zhe

1

There are versions in metal, too; like https://www.vaporbrothers.com/Metal-Keck-Clip-19mm_ProductID_8766 – Buttonwood Jun 28 '17 at 21:31
2

They are clips not clamps – James Dealon Jun 28 '17 at 22:02
4

@JamesDealon Please direct your comment to ChemGlass. I don't have strong feelings about the name. The important part is "Keck." – Zhe Jun 28 '17 at 23:43

score 3 · Answer 3 · answered Jun 30 '17 at 09:08

The clips are named after Hermann Keck - Chemistry World's Classic Kit columnist, Andrea Sella, spoke to him to get the story of the invention before he died a few years ago. https://www.chemistryworld.com/opinion/classic-kit-keck-clip/3004921.article

3 Answers3