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[Aschenauer Elke-Caroline <elke AT bnl.gov>]

great news, also helps saving quite some funds.

cheers elke

On Oct 20, 2021, at 15:38, videbaek <videbaek AT bnl.gov> wrote:

Very good news and thnak for the effort in clarifying this.

Flemming



On 2021-10-20 15:34, Tribedy, Prithwish wrote:

Hello Everyone,
 Good news!! The report from the chemistry lab has arrived. The water
contamination in the remaining NOVEC liquid from the opened drum is
well below 90 ppm (as required for safe operations according to the 3M
experts).
We provided the chemists with three samples: 1) from the top layer of
the opened drum (Sample A TOP), 2) from the bottom of the opened drum
(Sample B BOT) and, 3) from a newly opened small NOVEC container
(Sample C SML). All the samples have been checked twice and found to
have water contaminations at the level of 41-44 ppm. This level of
contamination is permissible for safe operations as per our previous
communication with the 3M experts.
So, we can go ahead and use the NOVEC from the opened drum for the
upcoming run.
We're grateful to our colleagues from the Neutrino and Nuclear
Chemistry group of the Chemistry Department at BNL.
Regards,
Prithwish
Prithwish Tribedy
Physics Department, Brookhaven National Laboratory
Upton, NY 11973, USA
Phone: 631-344-8904, 631-344-3853
E-mail: ptribedy AT bnl.gov

Begin forwarded message:
From: "Gokhale, Sasmit" <sgokhale AT bnl.gov>
Subject: Water content analysis of C4F9OC2H5 coolant liquid
Date: October 20, 2021 at 2:28:28 PM EDT
To: Prithwish Tribedy <ptribedy AT icloud.com>, "Yeh, Minfang"
<yeh AT bnl.gov>
Cc: "Hu, Yu" <yuhu AT bnl.gov>
Hello Prithwish,
I hope you are doing well. I have finished analyzing the three
samples that you gave us. I ran two Karl Fischer titration
measurements for each of the three bottles that you provided i.e.
one sample was collected from the top and bottom of the each bottle.
Below are the results:
Sample A BOT:
Measurement 1: water content = 43.98 ppm
Measurement 2: water content = 44.89 ppm
Sample B TOP:
Measurement 1: water content = 42.22 ppm
Measurement 2: water content = 43.23 ppm
Sample C SML:
Measurement 1: water content = 41.98 ppm
Measurement 2: water content = 41.79 ppm
To check the accuracy, I also ran a sample of one of our organic
solvents which should have a water content between 60 to 80 ppm and
the measured water quantity for that liquid was 63.18 ppm. So it
seems the measured values can be trusted.
Please let me know if you have any further questions.
Best Regards,
Sasmit
Sasmit Gokhale
Research Associate
Brookhaven National Lab
Building 555
Upton, NY 11973
Phone: 631-344-4992
Email: sgokhale AT bnl.gov

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--
Flemming Videbaek
senior scientist
videbaek @ bnl.gov
Brookhaven National Lab
Physics Department
Bldg 510D
Upton, NY 11973

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