We get our isopropanol from GFS Chemicals.  I haven't seen any problems with it, but so far I am still on my first bottle.  As Steven said, this does not constitute an endorsement of a vendor.

Mary C. Carson, Ph.D.
Chemist

Center for Veterinary Medicine
Office of Research, Division of Residue Chemistry
U.S. Food and Drug Administration
Tel: 240-402-6687
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-----Original Message-----
From: PLASMACHEM-L: Analytical Chem.(ICP's, DCP's, MIP's). [mailto:[log in to unmask]] On Behalf Of Mukul N. Patel
Sent: Friday, March 03, 2017 10:29 AM
To: [log in to unmask]
Subject: Re: Request for information.

Hello Dr. Pappas,

2-Propanol, semiconductor grade VLSI PURANAL grade from Honeywell is not available at SigmaAldrich at present.  Would you know or recommend any other vendor for it.

Thank you for consideration.

Best Regards,

Mukul
Mukul N. Patel
Accu Reference Medical Lab
Linden, NJ 07036
Cell: (732) 599-6137

________________________________________
From: Mukul N. Patel
Sent: Tuesday, February 28, 2017 1:14 PM
To: PLASMACHEM-L: Analytical Chem.(ICP's, DCP's, MIP's).
Subject: RE: Request for information.

Hi Dr. Pappas,

Thank you for the prompt response. Shall order Semiconductor VLSI Purnal Grade from Honeywell.  Shall keep you updated about the results.

Thank you for your consideration.

Best Regards,

Mukul
Mukul N. Patel
(732) 599-6137
________________________________________
From: PLASMACHEM-L: Analytical Chem.(ICP's, DCP's, MIP's). [[log in to unmask]] on behalf of Pappas, Richard Steve (CDC/ONDIEH/NCEH) [[log in to unmask]]
Sent: Tuesday, February 28, 2017 1:10 PM
To: [log in to unmask]
Subject: Re: Request for information.

We use Semiconductor VLSI Puranal grade (made by Honeywell).
This is not an endorsement of a vendor, but Sigma sells it. It has been discontinued, but there is still some in stock.
Someone else may know of another vendor.

R. Steven Pappas, Ph.D.
Team Lead, Tobacco Inorganics Group
Centers for Disease Control & Prevention
4770 Buford Highway, NE
M.S. F44, Building 110
Atlanta, GA 30341-3717, USA


-----Original Message-----
From: PLASMACHEM-L: Analytical Chem.(ICP's, DCP's, MIP's). [mailto:[log in to unmask]] On Behalf Of Mukul N. Patel
Sent: Tuesday, February 28, 2017 12:53 PM
To: [log in to unmask]
Subject: Re: Request for information.

Hello Dr. Pappas,

Any specific vendor from whom I should purchase the electronic grade Iso-propanol?

Thank you for consideration.

Best Regards,

Mukul
Mukul N. Patel (732) 599-6137