Cannabis Analytical Testing Laboratory


Integrity. Quality. Trust.

The Senior Management Team at CATLAB, LLC have over 100 years of environmental testing and industry experience.

Guy Sylvester, Chief Executive Officer (CEO)

A proven leader in the environmental industry, the CEO of CATLAB has operated, built, and grown analytical laboratories all over the US since the early 1980’s, serving in roles from General Manager to Director, VP, President and CEO. Early in his career, Guy worked directly with federal, state and military regulatory personnel to develop and implement industry regulations, providing him with exceptional insight into the environmental regulatory process. With over 35 years of experience in Industrial Hygiene, Environmental Indoor Air Quality and Environmental Analytical Testing, Guy has also served on many important industry Boards including the Indoor Air Quality Association (IAQA); the American Lung Association (ALA) in the Northeast; ALA Leadership Board in NH; and the American Council for the Accredited Certifications. (

Geoff Sylvester, President / Chief Financial Officer (CFO)

The President and CFO at CATLAB is an executive leader with experience in business transformation with equal success in small, early stage, and large fortune 500 environments. Prior to joining CATLAB, Geoff was General Manager of a $25 million dollar firm in Arizona. Prior to that, he spent 10 years as a Department Manager at an Environmental Laboratory, growing his division by 3x in just under five years. Geoff has vast experience in the Federal Market as well, including acting as Federal Site Superintendent, Federal Site Safety and Health Officer (SSHO) and Project Manager. In addition to his managerial and field expertise, Geoff also brings vast experience in accounting, account management, raw material management, construction, banking services and environmental services industries, and has been recognized for building exceptional relationships, improving processes, engaging team members and integrity.     

Jane Stratton, Chief Customer Relations Officer (CCO)

Our Chief Customer Relations Officer (CCO) at CATLAB, Jane Stratton, has extensive Business Management and Customer Relations experience, with a demonstrated history of working in the environmental services industry. Jane's degree in Small Business Administration / Management, combined with over 15 years of experience in Business Management, Environmental Compliance, and Customer Relations all help to round out the set of skills she uses at CATLAB on a daily basis. Her knowledge of Environmental Compliance, Laboratory Information Management System (LIMS), Sales, Marketing, Accounting, and Human Resources, combined with her dedication to Customer Care make Jane such a valuable asset to the company as well as to our customers. Jane is dedicated to developing and maintaining client relationships, and providing a single vision across all methods of customer contact.

Analysts and Technicians

The Analysts and Technicians at CATLAB are experts in chemistry and excel at customer care. The entire CATLAB team is dedicated to our customers, earning trust through integrity and quality of work.​


CJ Langley, Analyst 

CJ grew up in Northern Maine and received her Bachelor of Science and Masters Degrees, both from the University of Maine (Bachelor in Botany 2011; Masters in Ecology and Environmental Science 2017). CJ comes to the table with an extensive experience managing a plant physiology lab, a strong background in microbiology and organic chemistry, and she is an ardent supporter of the cannabis industry and its contributions to Maine's economy. At CATLAB, CJ oversees the PCR lab which tests for microbial contaminants like yeast, mold, and bacteria. In her youth, CJ spent a lot of time exploring the Haynesville woods, and still loves outdoor adventures such as hunting, snow sledding, ice fishing, skiing, canoeing, hiking, and rock climbing.

Deisy Pena-Romero, Analyst / QA-QC 

Deisy obtained a Bachelor of Science degree in Chemistry at Central University of Venezuela in 2007, followed by a PhD in Chemistry at Venezuelan Institute for Scientific Research in 2014. After finishing her PhD studies, Deisy moved to the United States to work as a postdoctoral research associate in synthetic organic chemistry at University of Notre Dame. Deisy later moved to New England to continue her postdoctoral program at University of New Hampshire for another 4 years. Deisy joined  CATLAB in October 2020 and enjoys her work performing analytical chemistry and learning about the cannabis industry. Outside of work, Deisy enjoys spending time with her family, especially her young son Dylan; exploring new places for walks, hikes, and fun outdoor adventures.

Rebecca Whitney, Analyst
Born and raised in DownEast Maine, Rebecca is the first analyst for the Organics department at CATLAB. She is responsible for potency testing using the LC-UV. She earned a Bachelor of Science in Chemistry from Elmira College in Elmira, NY in 2018, followed by Master of Science in Forensic Chemistry from Virginia Commonwealth University in Richmond, VA in 2020. For her thesis project, Rebecca worked with the Bureau of Alcohol, Tobacco, Firearms, and Explosives to study the persistence of gasoline and diesel fuel on the clothing of arson investigators. Rebecca began her professional career as a medical laboratory technologist for a COVID-19 testing facility in central Virginia before returning to Maine to be with her family. Now making her home in the Seacoast area, Rebecca enjoys using her free time to explore nearby hiking trails, work on Sudoku puzzles, and listen to true crime podcasts.


CATLAB's Technology Department manages the company's testing equipment, methods, data, computer network and information systems. The combined experience of our IT Team includes backgrounds in chemistry, environmental laboratory methods, project experience, computer systems and network management. With decades of experience, our team is dedicated to supporting our analysts by maintaining and improving data systems while finding ways to improve turnaround time, quality, and performance.

The Marketing Team at CATLAB has nearly 50 years of combined experience in all aspects of Marketing, including Social Media Marketing, Internet Marketing and SEO, Branding, Copywriting, Advertising, Public Relations, Media, Customer Relations, Sales, and Strategy.