Greg Heiland – Founder and CEO

Greg Heiland, a recognized leader in contamination control, has dedicated himself to promoting critical environment excellence for over 30 years. After graduating from Santa Clara University in 1982, Greg launched a 6-year career with American Scientific Products (Baxter/ VWR,/Avantor) in sales and management roles. In October 1988, Greg and his wife, Mary, founded Sierra Scientific, an Arizona based distributor of cleanroom products. They acquired the Texas based supplier, Class 10 in 1998, and started Valutek, a controlled environment consumables manufacturer in 2000. In 2002, Cintas acquired the distribution business. Based on client encouragement, Greg created the cleanroom wiki, Global Society for Contamination Control in 2005. Known as an industry expert, Greg is a frequent contributor to contamination control publications, trade shows, and the development of cleanroom standards. For his long-term commitment to IEST, he was awarded the 2018 Robert L Mielke award. When not promoting / endorsing the protection of product, people and practices, Greg enjoys travel, the outdoors and spending time with his family.



Mary Heiland – Co-Founder and VP of Human Resources

A native Californian, Mary graduated from the University of Southern California with a Bachelor of Science degree in Occupational Therapy. She began her career in neuro rehab at St. Jude Hospital in Fullerton, CA. She then worked as a pediatric OT for California Children Services in Orange County, CA and Howard County Schools in Maryland. In 1988, Mary co-founded Sierra Scientific with her husband, Greg, and subsequently Valutek in 2000. As our internal and external “goodwill ambassador”, Mary’s role as culture advocate, team builder, talent recruiter and celebrator is the heart of Valutek. Whether planning monthly themed “team appreciation” luncheons or celebrating any and all milestones, Mary’s legacy is her genuine care for the well-being of the team and the business. In her leisure time Mary enjoys cooking, crafting, volunteering, travel and keeping connected with 4 grown children and their exciting lives.



Chris Brown - Sales and Marketing Manager

Chris Brown, Sales and Marketing Manager, earned a degree in Nano-scale Engineering from SUNY College of Nanoscale Science & Engineering (CNSE), and a master’s Degree in Mechanical Engineering from Clarkson University, Capitol Region Campus. He also earned a bachelor’s degree in Business Administration and an Associate degree in Entrepreneurship from Johnson & Wales University in Providence, RI. Chris was a CNSE researcher and led an investigation that explored the cleanliness of clean film packaging. He is active in technical standard groups including CETA and IEST. Chris has participated as an industry expert panelist @ IEST Technical Conferences and holds several certifications in the controlled environment industry relating to the maintenance, testing and certification of controlled environments, biosafety cabinets, and fume hoods. He is an experienced contamination control expert with a proven track record in the controlled environment industry. Chris enjoys spending his free time with his wife and 3 children in upstate New York.



Cramer Hegeman - Controlled Environment Specialist, Central Region

Valutek is pleased to welcome Cramer Hegeman, our Central Region Critical Environment Specialist, based out of our Woodlands, TX office. Cramer brings over 34 years of critical environment experience to the job. He is a graduate of the Rochester Institute of Technology with a degree in mechanical engineering and holds multiple patents. Cramer has extensive international sales and marketing experience in the areas of semiconductor facilities, chemical distribution systems, cleanroom products, ultra-high purity chemical packaging used in IC and FPD manufacturing. Cramer truly enjoys working with customers, providing technical aptitude that assists in reaching cost effective solutions. In their spare time, Cramer and his wife, Vickie, enjoy spending time with family and their church.


Reach Cramer directly at or call: 832.279.4222



Neal Woods - Controlled Environment Specialist, East Region

Valutek is pleased to welcome Neal Woods, our East Coast Critical Environment Specialist, based out of our Geneva IL office. Neal has over two decades of experience in the controlled environment space, He will work directly with you to focus on better outcomes with your wiper, glove and adhesive mat needs. Through discovery, training and solutions, Neal will help our customers improve quality and increase compliance. Neal excels at setting priorities and utilizing resources to aggressively follow-through on the individualized needs of our customers. Neal and his wife, Michele, have 6 kids and like to travel and explore in their leisure time.


Reach Neal directly at or call: 312.757.0488


Tammy Featherston - Customer Advocate

Since 2013, Tammy Featherston has provided leadership of our inside sales operation team by always putting the customer first. A consummate sales support specialist, Tammy has held customer service roles of increasing importance throughout her career. As the face of Valutek, Tammy delivers the ultimate customer experience by making it pleasant and hassle-free. She also inputs orders, handles online chat, resolves issues and tracks orders. Tammy makes sure our customers get the right product, in the right quantity, at the right price ON TIME. “As the first to arrive before sunrise, Tammy sets the tone of the day with her enthusiastic smile and can-do attitude,” says Greg Heiland, CEO.


Reach Tammy directly at or call:
Office: 602.761.2302



Cindy Navarro - eCommerce Manager

Cindy Navarro joined Valutek as a Marketing intern from her native Latin America in 2014. After completing a three-year rotation at Valutek HQ, Cindy retuned Barranquilla, Colombia, where she works remotely. Cindy has a degree in International Business from Universidad del Norte. Prior to working for Valutek, Cindy did all the digital marketing for a leading cosmetics firm in Latin America. She is bi-lingual and owns all our digital marketing / eCommerce initiatives. Cindy’s ultimate goal is for our customers to have the best possible digital online experience, with an easy to navigate website that is both informative and convenient to use. Cindy helps enhance our distributors online presence with Valutek controlled environment consumable marketing material. In her spare time, Cindy and her husband enjoy travelling and spending time with family and friends



Peter Mattos - Chief Financial Officer

Peter Mattos, CFO graduated from California State University, Chico, with a Bachelor of Science in Business & Accounting. A Certified Public Accountant, Pete has over twenty years’ industry experience. Throughout his career, Pete has provided the financial leadership in start-ups, turn-arounds, and large scale, publicly traded companies. He drives financial performance through a budget-based approach to leadership. Pete’s strengths include planning, analyzing, decision-making and executing. He develops reporting tools to ensure that the team is making data based decisions. Pete has the unique ability to develop the high-level strategy, as well as the skill set to translate that strategy into specific business processes. He develops the accounting and reporting systems to ensure that the progress toward company goals is easily measured. Pete is a “hands-on” CFO who leads by example. His skills on the golf course and bowling alley are equally impressive.



Andrew Yates – Accounting Intern


Sharon Looi – Staff Accountant




Sam Penas– Director of Operations

Originally from Northern Minnesota, Sam Penas graduated from the University of North Dakota, Grand Forks, with both a bachelor and master’s degrees in Mechanical Engineering. Sam has started new production facilities in Latin America and Asia from the ground-up. He has extensive experience in managing teams in multiple locations to align them around both their individual, and the overall team performance. Sam is not satisfied until everyone on his team understands how their specific role contributes to the organization’s overall success. An expert in “constraint theory”, he is constantly seeking improvements to the workflow to improve quality, eliminate redundancy, reduce cost, and improve the overall client experience. Sam own’s Valutek Operational Excellence from the beginning to end. Sam and his wife, Amber, just welcomed a baby boy into their family and moved to Arizona! His hobbies include cooking for family & friends, and building custom motorcycles.



Jose Hernandez – Warehouse Coordinator

Jose Hernandez has been the warehouse coordinator at Valutek for over 4 years. He is trained in the operation of the narrow-aisle electric forklifts and order pickers. Jose does inventory receiving, order picking, and stock rotation. He is also the lead manufacturing tech in the Valutek ISO 4 on-site controlled environment doing the production and QC quality control on the pre-wetted wipers. He also monitors all the raw material components required for the manufacturing. Originally from the Southwestern side of the Rockies in Colorado.




Tim Huot – Warehouse Coordinator / Route Driver

Tim Hout had over 22 years’ experience with 2 leading retailers in positions ranging from inventory stocking and distribution before joining the Valutek team. He is certified in the operation of electric narrow aisle forklifts, and order pickers. Tim’s role’s at Valutek includes inventory receipt, order picking, delivery, and a technician for the manufacturer of prewetted wipers in the ISO 4 on-site controlled environment. Originally from Kankakee, Illinois, Tim re-located to Arizona to complete High School. Despite his long-term Arizona roots, Tim remains an avid Chicago Cubs and Bears fan.




Vijendraan Venkitasalam – Quality Manager



Sunny Wu – Quality Assurance Specialist




Our mission is to help our critical environment customers achieve productivity, yield, and compliance goals.



Never Give Up

High Accountability

Do the Right Thing


Team Player




Valutek - Keeping it clean since 1988

Valutek has been servicing the controlled environment needs for thousands of organizations in the life sciences, advanced material and academia since 1988. Valutek offers our clients best-in-class products and exceptional customer service. Valutek does not just meet your demands - we consistently exceed them, and has fostered a culture of continuous improvement. Valutek has built our reputation on quality, performance, dedication and knowledge, providing our clients with a trusted business partner you can count on for years to come.



Valutek understands that you have less time and more responsibilities than ever before. Supplying cleanroom consumables for your controlled environments has to be fast and easy. We want you our customer to purchase Valutek products however you like to purchase your consumables. That’s why we’ve built our company around your needs with the ability to purchase through your favorite supplier or just by calling Valutek to find out how best to purchase Valutek products; we are here to take great care of you. For all other questions, your answers are only one click, email, or phone call away with technical support and our library of online product data sheets.


Valutek product categories:

There are 8 product categories that our logo represents:


Knowledgeable, consistent industry leadership

Valutek is committed to sharing and enhancing knowledge in the contamination control arena. Valutek is a founding sponsor of the Global Society for Contamination Control (, an independent material testing laboratory and organization focused on advancing contamination control through knowledge exchange and collaboration. In addition, Valutek is an active participant in the leading professional organizations, (IEST, ESDA, INDA, ASTM) and a technical contributor to leading conferences (SEMICON, Interphex, MDM).


Proven technology leader focused on quality and performance

Before our products meet your own stringent requirements, they need to meet ours. Valutek is the only manufacturer to provide ongoing independent testing, performed at GSFCC’s laboratory at the world’s largest nanofab complex, SUNY POLYTECHNIC. Our close attention to quality control and commitment to continuous improvement ensures that you will always receive the highest quality products.


Agile, trusted partner dedicated to value innovation

We are your trusted partner, focused on helping your organization succeed. Along with our commitment to one-source convenience, Valutek’s service commitment permeates all aspects of our organization, and is dedicated to only one mission: serving your controlled environment needs. Our in-house client success team of knowledgeable, technically competent professionals responds to your requests quickly, from order tracking to product specifications, to certificate of compliance.


Product expertise

Three product lines engineered for your specific critical environment. Valutek makes it easy for you to pick the right products for your controlled environment. Look at these symbols next to each product type: