From: Benjamin G Owens <bowens**At_Symbol_Here**UNR.EDU>
Subject: Re: [DCHAS-L] Industrial hygiene monitoring instrumentation
Date: Fri, 7 Dec 2018 00:31:19 +0000
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Message-ID: CY4PR01MB2214E53B8AB849EF2591D93ACBAA0**At_Symbol_Here**

We retired our MIRAN and purchased a Gasmet DX4040.  We haven’t used it too much yet, but some.  It has a learning curve but it has a lot of capability (direct reading and ability to ID unknowns).  PID and FID detectors can be used for most VOCs and some inorganics (PID), but of course they are not specific for any particular gas/vapor.  They are all part of the tool box with different strengths and weaknesses, and applications based on that.





Ben Owens

EH&S Assistant Director, Laboratory Safety

Environmental Health and Safety Dept., MS 328

University of Nevada, Reno

775-327-5196 (office)

775-843-2113 (cell)



From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU> On Behalf Of Luis A Samaniego
Sent: Thursday, December 6, 2018 3:26 PM
Subject: [DCHAS-L] Industrial hygiene monitoring instrumentation


The MIRAN Sapphire is an instrument to monitor gas / vapor exposure in real time. Manufactured by Thermo Scientific. Unfortunately, this instrument is going to be discontinued and service support will cease in the future. I am looking into the Gasmet DX 4040 portable chemical gas analyzer to replace the MIRAN. Does anybody have the Gasmet DX4040 in operation? Please provide feedback. How reliable is this instrument? Are there any other portable instruments to detect hazardous vapors in real time such as formaldehyde, isoflurane, xylene, benzene, phenol vapors, VOC in general? Any suggestions are appreciated. Draeger test tubes, diffusion badges are great but the accuracy is (+/-) 25%

Thanks in advance,



Luis Samaniego, CSP

Sr Laboratory Safety Specialist


Northwestern University

Research – Safety


303 East Chicago Avenue

Ward B-106, W223

Chicago, IL 60611








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