In our pursuit of excellence, we take the pharmaceutical approach to CBD testing. Testing is performed in our ISO 17025 accredited laboratory – our equipment is regularly calibrated and validated both internally and externally for complete quality assurance. Every step in our CBD testing is fully documented and standardised to give more accurate and reliable results.

We test a wide range of products for 14 cannabinoids including THC: CBDV (Cannabidivarin), CBDVA (Cannabidivarinic acid), CBG (Cannabigerol), CBD (Cannabidiol), THCV (Tetrahyrdocannabivarin), CBDA (Cannabidiolic acid), CBGA (Cannabigerolic acid), CBN (Cannabinol), Δ9-THC (Δ9-tetrahydrocannabinol), Δ8-THC (Δ8-tetrahydrocannabinol), THCVA (Tetrahydrocannabivarinic acid), CBC (Cannabichromene), THCA (Δ9-tetrahydrocannabinolic acid), and CBCA (Cannabachromenic acid)

Making science simple: What is HPLC and how does it work?

HPLC is a technique in analytical chemistry used to separate, identify and quantify compounds in mixtures. How HPLC works: Each cannabinoid has a slightly different chemical structure, similar but different. HPLC works by forcing the mixture through a column. A column is a tightly packed bed of very small inert beads. Due to the differences in chemical structure, and hence their physical shape, the different compounds travel through the column at different speeds. By applying a constant pressure and temperature to the chemicals being forced through, you can record the retention time of each chemical as it passes through.

At the other side of the column is a detector – this gives you a signal as something comes out of the column. The more of something that comes out, the stronger the signal. So, by combining these two effects, you know at what time each compound come out – and from the strength of the signal how much of each compound is present – that is the basis of HPLC.

We train the system by putting standards for each compound through the system. These standards are very high purity chemicals and allow us to calibrate the system and tighten the accuracy of our results.


We pioneered testing-in-triplicate for CBD products – a product is sampled three times before the results are pooled into a single-average figure. Every sample is double injected – each individual sample goes through our equipment twice.

Making science simple: Each sample is tested six times to reduce the variability of results – this allows us to identify rogue results with greater ease. We are also able to test closer to legal limits with greater accuracy.

If only a single test is performed, the result maybe unstable and inaccurate, or a rogue reading may occur. This means the tests must be repeated causing further delay and expenditure.

Standard CBD testing

Cannabinoid standard tests: isolate/distillate, CBD oil, e-liquid, cosmetics, CBD paste, drinks, water soluble CBD, capsules, edibles (gummies, chocolates etc), tea, coffee beans, any other food produce.

Other CBD testing

Our other testing includes: full cosmetic testing & notification on EU portal, terpenes, solvents, GPSR compliant emissions testing, heavy metals, pesticides.

Our gold standard service is no more than a single sample testing. Once testing has been concluded, a formal certificate is issued. Our commitment to high pharmaceutical standards provides results that our clients can rely on and trust.

Legal facts about CBD

The cannabidiol (CBD) market is governed by wide-ranging global regulations. Here are some key legal aspects:

  • CBD is not illegal in the UK. Tetrahydrocannabinol (THC) is the illegal component of cannabis (marijuana) and must be below 0.2%
  • Finished products are covered by the Controlled Drugs Act 1985 which states that levels must be below 1mg in the final product
  • The Foods Standard Agency says levels must be below 0.2% for finished food products which contradicts the Controlled Drugs Act and creates a grey area
  • It is not legal to use isolate for products intended for oral consumption. In these instances, distillate or oil-based products should be used instead
  • In the UK you are not permitted to make any medical claims and to do this, you must apply for a medical license and conduct stringent testing
  • Products are covered by General Product Safety Regulations (GPSR) 2005 and as such, they require a toxicology assessment and emissions testing

Work with scientists, work with ADACT

Companies around the world have trusted ADACT with their regulatory compliance.

  • Consult with a world renowned compliance agency who knows compliance and has an excellent understanding of the science behind it – not all compliance agencies are scientists and regulatory experts with this in-depth knowledge and expertise.
  • All our testing is completed in our own state of the art ISO 17025 accredited laboratory, providing results you can trust and rely on.
  • Choose an agency with proven results who is dedicated to your success. We have immense experience in providing compliance with over 1,500,000 TPD notifications since May 2016.

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