How do you clean a sintered glass funnel?

Carefully add 15ml 30\% hydrogen peroxide, or 1/3 the volume of sulfuric acid used, to the Büchner funnel and stand back! Let the reaction proceed for about a minute and then apply a quick vacuum (just enough to pull the solution through the sinter into the flask and the sinter is dry.) Monitor the reaction.

What is sintered glassware?

Sintered glassware is a piece of glassware which contains a porous section. Sinters are available in a wide variety of sizes but are most common in disc form in various diameters. Sintered glassware is used in laboratory applications such as filtration or gas dispersion.

How do you clean a Gooch crucible?

Gently wash crucibles in soapy water (Alconox); rinse well with distilled water. C. Place crucibles upside-down in sonicator containing enough soapy distilled water solution to cover crucibles. Sonicate for five minutes.

How do you clean a glass frit?

Cleaning: A new fritted filter should be washed, using vacuum, with hot hydrochloric acid and then rinsed with distilled water before use. This treatment will remove loose foreign matter such as dust. Clean fritted filters as soon as possible after use to extend their life.

What is difference between Gooch crucible and sintered glass crucible?

Gooch crucible is made of porcelain, whereas sintered glass crucible is made of Pyrex glass. The key difference between Gooch crucible and sintered glass crucible is that Gooch crucibles can withstand very high temperatures while sintered glass crucibles cannot withstand temperatures above 400 Celsius degrees.

What is a sintered glass crucible?

Sintered glass is a glass mesh-like material used for filtration. It is preferable to filter paper. A sintered glass crucible is thus used to mainly to filter solutions and mixtures when the residue is desired and when minimal residue is sought in the filtrate.

What is sintered glass funnel?

It is made by sintering together glass particles into a solid but porous body. In a fritted glass filter, a disc or pane of fritted glass is used to filter out solid particles, precipitate, or residue from a fluid, similar to a piece of filter paper.

What is the standard lab procedure for washing of glassware?

Rinse All Glassware

1. First, rinse glassware very thoroughly with running tap water, filling, shaking and emptying it at least six times.
2. Then, rinse all glassware in a large bath of distilled or high purity water.
3. Finally, rinse each piece individually in high purity water.

How do you clean a sintered funnel?

How to clean your sintered funnel 1 (1) Fit the funnel to a Büchner flask attached to a vacuum that you can control easily 2 (2) Add a small amount of conc. 3 (3) Add a dash of hydrogen peroxide and stand back. 4 (4) When the ingredients have been cooking away for a minute or so apply a very gentle vacuum briefly.

How do you clean a sintered glass filter?

For the sintered glass filter, add an inch or two of diatomaceous earth (Celite). Wet it under vacuum with solvent that you are using to make a pad. Now slowly filter your charcoal suspension. This will keep the sintered glass clean.

How to clean a Büchner funnel?

Also cleaning procedure is easy. If you have used a sintered glass filter in place of Büchner funnel, after use, you have to wash it thoroughly with suitable solvent to remove trapped particles (similar to charcoal particles you have experienced) before subjected to usual cleanup. That is an extra step.

How do you clean a sinter without turning it white?

I have never had a sinter that didn’t become white after treatment with conc. sulfuric acid and hydrogen peroxide and this is generally the method that I use because I know it works every time. (3) Add a dash of hydrogen peroxide and stand back.