2% PMMA in the lab OK to use 2% non-standard batch
jwc at snf.stanford.edu
Mon Oct 13 13:34:29 PDT 2008
Greetings Byoung Il Lee and Ebeam Lab Users :
It is OK to use up the remaining lot batch that we have in the cleanroom
that is marked NON-Standard Batch.
It is a MicroChem Corp manufacturers resist evaluation lot that I have
used for several experiments in the recent past and it has been fully
Dose to clear is 100 - 115 µC/cm**2
Its performance is exactly the same as the other batch of 2% 950K PMMA
in anisole we normally stock in the Ebeam lab.
I will also bring in a new bottle of the previous batch we have stocked
in the lab that was used up over the weekend.
All the Best,
Byoung Il Lee wrote:
> Dear James,
> I have a question regarding 2% 950k PMMA.
> I was going to deposit 2% PMMA and use Raith tonight, but couldn't find the bottle.
> Is the Non-std 2% PMMA in the yellow cabinet the same thing as the old ones? If so, can I use it?
> If not, I am wondering when I could get the standard 2% PMMA that I used to use.
> Thank you, have a great weekend,
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