Terpene extraction


Grain Alcohol Extraction


Downstream purification



Custom formulation

GNA works with brands and manufacturers to create science-based custom cannabinoid formulations that are tailored to meet consumer and market needs. These custom formulations can be used in everything from skincare products to vaporizer cartridges to enhance flavor, aroma and desired effects. Through a combination of technology and human capital, we continue to develop innovative and proven products for our customers.

Who are we ?

Groff NA Hemplex is a physician-owned, hemp-cannabis company focused on processing industrial hemp. We process and refine hemp for its beneficial compounds and materials to further benefit people and the planet.

Hemplex specializes in science-based custom cannabinoid formulations to meet consumer and market needs. Through a combination of technology and human capital, we continue to develop innovative and proven products for our customers.

Sustainability statement

In all facets of our business, we are conscious of our environmental implications and strive to adopt practices that support a healthier planet for generations to come.


Commitment to quality

We are committed to providing our customers with safe, reliable and consistent products. Through our robust quality assurance program, manufactured products are checked multiple times to ensure specifications are met prior to shipment. Quality does not stop at the time of shipment. We are dedicated to serving our customers through the life cycle of our products.

Groff North America provides quality, consistent, trusted hemp products. These products are safe and concisely formulated. Therefore, it is with careful consideration that Groff North America chooses Columbia Laboratories as our third-party testing partner for trusted testing and founded data.

For the last 40 years, Columbia Laboratories has provided reliable testing, protecting public safety in consumer markets.

Their ISO-accredited testing services range from Nutritional to Environmental testing, as well as Hemp and Cannabis. In fact, Columbia Labs was the first cannabis testing lab in the Oregon Recreational Market and continues to lead the industry with validated methods and expanded testing profiles.

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