Dear Dr. Rajesh Rohilla,

Teflon beakers are non-contaminating and completely inert to highly aggressive reagents. They are non-wettable, unbreakable, lightweight, and heat resistant. Easy to clean, these beakers have a broad spout for easy pouring. I suppose that the use of Teflon beackers in the sol-gel synthesis processes can be linked to the use of particular reagents and / or to the autoclave treatments at medium-high temperatures.

Best regards, Pierluigi Traverso

Dear all, inertness is the main reason. The inorganic nature of reactants and the glass beakers is the same, possible reaction with and contamination by the glass surface. My Regards

I agree with Abdelkader BOUAZIZ sir

Thank you for your valuable suggestions regarding Teflon Beaker with satisfying explanation. Abdelkader BOUAZIZ Artur Braun Pierluigi Traverso

Dear Artur Braun, would you please tell any reference that support your last contribution. The following quote is taken from the link below. My Regards

PTFE – Polytetrafluoroethylene best known under the DuPont trade name of Teflon.

A high performance plastic with excellent chemical resistance. It is inert to practically all chemicals and has excellent non-stick properties. It is relatively soft which is ideal for sealing applications but not good for mechanical strength in threads. Can also be available with a range of fillers in particular glass and carbon which will increase it’s strength. Working temperature upto 250 degrees C

Ref.: https://www.ptfeparts.net/materials

Dear all, this is an interesting link on the chemical resistance of PTFE. My Regards

https://www.calpaclab.com/teflon-ptfe-compatibility/

Dear all,

teflon beckers are often used in analytical chemistry in the presence of particularly aggressive solutions.

In most cases, to eliminate inorganic elements, a 10% nitric acid overnight treatment and then a rinse with ultrapure water is used. If the contaminant is organic matter, it is possible to use first hot water and soap, then decontaminate with nitric acid and a final rinse with ultrapure water.

Best regards, Pierluigi Traverso

Dear Rajesh Rohilla it depends on which precursor are you using.

@ Rajesh Rohilla

Teflon Beakers are Inert and can withstand harsh chemical environments. Mostly used in reactions involving Hydrofluoric acid. However, the problem with these beakers is that it is difficult to clean the contaminations ( especially Metallic Particles).

The beaker is quite expensive too.