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Questions tagged [equipment]

Questions regarding the equipment used in labs (such as flasks, tubes etc.), their operation and maintenance.

This tag should be applied to questions that are about the equipment used in labs, and techniques of keeping them, their uses, or their maintenance.

The questions should only be about the equipments chemists use in the lab; such as glassware (beakers, flasks, bottles, pipettes, watch glasses, glass rods etc.) or other equipment; namely, tongs, holders, plastic bars, burners, spatulas etc. Please note that falls under this category.

The questions with this tag should be directly about the equipment; and any other questions which do not directly deal with them and are about the experimental methods involving the mentioned equipment should be tagged with and any other relevant tags.

231 questions
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Does anyone know what this piece of glassware is?

I recently found this piece of lab glass with a jacket and spout. It says eubilicmeter but I cannot find any information about it online and I do not know what it is supposed to do. It is hollow in the middle, sort of bell shaped. What is its name…
Chad
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What is the "blue spirit" (or "red spirit") in mercury-free thermometers?

I surmise it's some kind of alcohol, but is there a standard chemical used for these? One of them just exploded in my students' lab! It was the kind with blue fluid in it.
khaverim
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Unknown glassware

I recently found a piece of older glassware in our lab and nobody seems to know what it is. It appears to be some sort of condenser; however, it does not have both the in and out little notches on it. It is open on both ends and has one smaller…
skennedy
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17
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1 answer

What's the purpose of this vintage glassware?

I found this glassware in a phytochemistry lab abandoned in the 1990ies. The piece itself was shelved in the storage room, thus probably already obsolete back then. The device, entirely glass, is a compact sequence of six bulbs (relative sizes: L,…
I_O
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15
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2 answers

What is this Lab equipment?

I want to know the name of this equipment with a sealed graduated tube and the purpose it's being used. I went through all the results of Google, but I was unable to find this exact equipment. I believe someone here should know this very well.
Nimeshka Srimal
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14
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1 answer

Why do Büchner funnels have no glaze on the top rim?

I have a question about Büchner funnels (just out of pure curiosity). The funnels I have seen have no glaze on the top rim. Actually, the question is why the top end is not glazed. Does it have any utilitarian meaning? Or is it due to the…
Istrel
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13
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3 answers

What are the plastic connectors called (for glassware)?

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:
khaverim
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13
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3 answers

Cleaning a round-bottom flask, especially after distillation

I was wondering, how can I clean my RBF after doing a distillation? Cleaning it with a simple pipe-cleaner or similar cleaner is a headache, due to the roundness of the flask. Is there a more effective method?
Fiire
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10
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What angle limits should apply to Graham condensers?

I have seen Graham condensers set at an angle (perhaps as low as 30 degrees from horizontal). I guessed this wouldn't be a problem because siphoning would clear the condensate. But I recently saw an argument that Graham condensers should only be…
feetwet
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Why is there a bulge at the top of my volumetric flask?

Sometimes volumetric flasks are designed with a bulge in the neck right below the stopper opening. What is the design intent of that bulge?
Brett Baker
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8
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What is this piece of glassware called?

Here's an image: The left side is designed to be fitted into a beaker, and it captures gas evolved during a reaction. The right side can be filled with a liquid to then react with that gas. We use it to capture ammonia from a decomposition…
realityChemist
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Identifying Name/Purpose of piece of ellipsoid glassware with internal tube?

I recently went to a market in Southern France and found this little piece of equipment for sale along with a whole bunch of other chemistry things. the guy had no idea what it was for or where he'd gotten it from, but for €1 I decided I had to have…
Robert Gregson
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Why did my glass pot explode when I boiled sugar in it and added cold milk?

I decided to try some cooking with sugar and put a glass bowl on the flame with half a cup of sugar in it and some water. After bubbles appeared I stirred the sugar for about a minute and then I decided to add milk, and as soon as I poured the milk,…
soundslikefiziks
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7
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What is the purpose of this glassware?

I have seen these small test tube looking doohickeys being supplied from many chinese suppliers, but never with any description as to what they are for. They almost invariably have the description "Automatic Filling Tube Liquid Test Tube With Spout"…
TWiz
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6
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2 answers

Kipp's apparatus with powders

A Kipp's apparatus has three distinct bulbs. The topmost one contains a liquid and a tube to the bottommost one. The middle one contains a solid to react with the liquid. This is very understandable when large chunks of solid are used. However,…
sadljkfhalskdjfh
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