Hey Ingrid, 

We have been quite successful at removing DCM from our experiments. I know this isn't a direct answer to your question, but if you want I'd be happy to chat about the experiments you are doing and potentially offer alternative solutions. 

Warmest regards, 

Jonathan

On Thu, Mar 27, 2025 at 12:45 PM Ingrid Gm <ijgm147**At_Symbol_Here**gmail.com> wrote:

Hello all,

I am reaching out for advice regarding EPA Methylene chloride monitoring.  I work at 2YCC, where we use DCM less than 30 days per year, only for certain lab experiments. It’s likely that only two employees need to be monitored, but I am not quite sure if to perform monitoring only with badges or if we might need to invest in a direct reading equipment (“the owner or operator must provide measurements taken by direct-metering devices that give immediate results and provide sufficient information regarding potentially exposed persons”) if the latter, what equipment would you recommend for efficient direct reading?

I would really appreciate your support.

Thank you,

Ingrid Guillen Marquina 

_______________________________

Ingrid Guillen Marquina

Lab Assistant/ Safety Coordinator

Chemistry Department

Northern Virginia Community College-Annandale Campus 

 iguillenmarquina**At_Symbol_Here**nvcc.edu / nvcc.edu

--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org

--

Jonathan Dannatt, Ph.D.

Assistant Professor

Department of Chemistry

University of Dallas

O: (972) 721-5065

E: jdannatt**At_Symbol_Here**udallas.edu

W: Website, Linkedin

 

--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org