I think you can find a proper rigid polymer and machine it to the size you want.
I did it before for holding wafer in cleaning solution.

Yingtao

-----Original Message-----
From: mems-talk-bounces@memsnet.org [mailto:mems-talk-bounces@memsnet.org] On
Behalf Of Yu Wang
Sent: 26 August 2009 18:35
To: General MEMS discussion
Subject: [mems-talk] Dipper basket/vessel 4" in diameter

Hi,

I want to buy a dipper basket/vessel that can hold one 4" wafer and
withstand HF solution, but can not find any vendor or manufacturer. (I can
only find only 2.5" and 3.75" ones). If you know any vendor of  4" ones,
would you please tell me the vendor's contact information?

Many thanks in advance,

Yu Wang