Senior Applications Scientist – EPA Method

Location:Simi Valley, CA (On-site / Laboratory Facility)

Job Type:Full-Time

Department:Applications & Customer Solutions / Technical Operations

Reports To:Director of Applications / VP of Analytical Operations

Entech Instruments is a world-recognized leader and pioneer in analytical instrumentation for environmental air sampling of organics and PFAS, and sample introduction systems for analysis of VOCs and PFAS by gas chromatography-mass spectrometry (GC/MS).Headquartered in Simi Valley, California, Entech manufactures industry-defining solutions—from our proprietary Silonite™ inert-coated sampling canisters and thermal desorbers systems to our advanced multi-stage preconcentrators (7200

CTS/7200A series), robotic autosamplers (Sky Can and 7650A), automated canister cleaners (3200), and precision dilutors (4700A).

Commercial testing laboratories, government monitoring agencies, and industrial hygiene professionals worldwide rely on Entech canister monitoring solutions to provide accurate analyses of up to hundreds of chemicals in air.

We are seeking an experienced, hands-on
Senior Applications Scientist – EPA Method TO-15 / TO-15A
to join our team in Simi Valley. In this high-impact technical role, you will bridge the gap between advanced instrumentation engineering and practical laboratory execution.

Rather than running repetitive production batches, you will serve as Entech's subject matter expert (SME) on whole-air canister sampling and analysis under EPA Compendium Methods TO-15, TO-15A, and 327 guidelines. You will develop robust analytical workflows, qualify hardware innovations, author technical application notes, author and present papers at technical meetings, and conduct proof-of-concept testing for global clients, delivering high-level training and troubleshooting support to analytical laboratories across the world.

Develop, optimize, and document robust analytical methods for trace-level VOC and polar volatile determinations under US EPA Method TO-15, TO-15A, and 327.

Evaluate ultra-trace detection limits (), humidification impacts, water-removal technologies, compound recoveries, and system inertness across Silonite™ treated surfaces.

Design and execute validation experiments comparing front-end sample introduction systems, cryogen-free trapping versus classic cryocooling techniques, and multi-bed sorbent traps.

Author clear, compelling technical documentation including application notes, technical white papers, standard operating procedures (SOPs), and peer-reviewed technical articles.

Serve as the primary technical interface during pre-sales and post-sales technical evaluations, collaborating closely with sales and product managers.

Host instrument demonstrations—both in-person in our Simi Valley demonstration laboratory and via interactive webinars—for key commercial testing labs, regulatory bodies, and international distributors.

Analyze client-submitted air and gas samples for feasibility studies, delivering rigorous data packages and chromatogram reviews.

Lead advanced customer training sessions on Entech hardware platforms (7200

CTS/7200A preconcentrators, SK40/7650A/7016D autosamplers, 4700A dilutors, and 3200 canister cleaning systems).

Deliver application and troubleshooting support for customer escalations involving chromatography issues, active-site adsorption, moisture interference, carryover, and internal standard variations.

Collaborate with Entech’s customer service and field engineering teams to develop effective training curricula and troubleshooting flowcharts.

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