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Subject: Re: [DCHAS-L] Massachusetts adopts academic lab waste rule

Date: Nov 25, 2019 13:43 UTC

Author: Stuart, Ralph <Ralph.Stuart**At_Symbol_Here**KEENE.EDU>

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Subject: [DCHAS-L] EPA Requests Public Input on Adding PFAS Chemicals to the TRI List

Date: Nov 25, 2019 20:42 UTC

Author: DCHAS Membership Chair <membership**At_Symbol_Here**DCHAS.ORG>

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From: Joseph Smith <information**At_Symbol_Here**CANAVERALLABORATORIES.COM>

Subject: Re: [DCHAS-L] CO2 Monitoring in Ultra-Cold Freezer

Date: Nov 25, 2019 14:37 UTC

Reply-To: ACS Division of Chemical Health and Safety

In-Reply-To:  

Demystify: 

You need to get the technical data sheet from the sensor manufacturer to discover the operating temperature range.

Joe Smith
Canaveral Laboratories LLC
Hemp / CBD Testing Labs

On Fri, Nov 22, 2019 at 7:24 PM Bruce Van Scoy <bvanscoy**At_Symbol_Here**twc.com> wrote:

Fellow Listers,

I'm wondering if anyone could provide some experience, guidance and incite into the following situation. I have personnel working in ultra-cold freezers selecting/packing materials into boxes filled with dry ice. A controller was installed to monitor temperature and CO2 levels with sensors installed. I am concerned with the CO2 sensor specification in this environment, specifically concerning precision, accuracy and ability to calibrate to respond within an ultracold freezer. Does anyone have any experience with similar CO2 sensors in this environment?

Please respond off-line and thank you!

Bruce

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