Professor Herb Hemp Briquette Hash 3.5g, Guava Dog

Who Adact Medical actually are

Adact Medical is a testing laboratory based in South Yorkshire, established in 2012. Alongside cannabinoid testing it does regulatory work: Novel Foods applications, cosmetics notifications, stability programmes, batch quality assurance, and a long-standing line of compliance testing for the vape trade.

The part that matters is the accreditation. Its laboratory holds UKAS ISO/IEC 17025:2017 accreditation for CBD profile testing. That standard is the international requirement for the competence of testing laboratories, and UKAS is the United Kingdom Accreditation Service, the national body recognised by government to assess against it. It is not a membership scheme, a self-declaration or a phrase a company can simply adopt.

The testing itself uses high-performance liquid chromatography, and the published panel covers sixteen cannabinoids rather than a single figure for CBD.

Adact publish a caveat of their own that is worth repeating, because it is the sort of thing companies usually leave out: their accreditation is limited to the activities described on their UKAS schedule of accreditation. In other words, accreditation covers defined work rather than acting as a blanket endorsement of everything an accredited company does. We would rather point at that limit than pretend it is absent.

After six pages spent correcting things about this range, from a flavour name that arrived in two halves to a description that calls the same material both bulk plant and sifted resin, it is a pleasure to report that the credential printed smallest on the card is the one that stands up.

The certificate holds numbers the label leaves out

This is the useful part, and it resolves something we could only half answer on another page in this range.

The compliance wording printed on these packs, and copied by every shop selling them, refers to a limit of one milligram of THC. We have set out on our Wedding Cake page why that is narrower than the rule it is describing: the exempt product route in the Misuse of Drugs Regulations 2001 turns on controlled cannabinoids counted together, and that category includes CBN and THCV as well as THC. A statement about THC alone does not address the others.

Adact's published cannabinoid panel names sixteen compounds, and both Cannabinol and Tetrahydrocannabivarin are explicitly on it, alongside CBD, CBDA, CBDV, CBDVA, CBG and the rest. So the analysis behind the QR code very likely reports all three of the figures the rule cares about, even though the front of the pack mentions only one of them.

That turns a complaint into something you can act on. If the compliance question matters to you, do not read the sentence on the card. Scan the code, find THC, THCV and CBN on the profile, and consider them together against the pack rather than individually.

Two honest limits on that. We have not seen a certificate for any particular batch of this product, so everything above describes what the laboratory publishes about its service rather than any result. And a profile reports concentrations, so getting from those to a figure for a whole container is arithmetic somebody still has to do. Our lab reports page sets out how we handle certificates generally.

What a QR code on a hemp pack can and cannot tell you

A code on packaging is only as useful as what sits behind it, and there is a wide range in this trade. At one end it opens a document naming a batch, a date, a laboratory and a set of measured figures. At the other it opens a marketing page, or a single certificate that stands in for an entire product range regardless of when anything was made.

The things worth checking when one opens are straightforward. Does it name the laboratory. Does it name a batch or lot rather than just a product. Does it carry a date, and how old is that date. Does it list individual cannabinoids or only a total. And does the product on the certificate match the product in your hand, including the weight.

A certificate that fails those tests is not necessarily a sign of anything wrong, but it does mean the code is decoration rather than evidence, and you should weigh it accordingly.

On this range the underlying testing is done by an accredited laboratory, which is a better starting point than most. What we cannot tell you from here is what any individual card's code resolves to on the day you scan it, because that is a question about a batch rather than about a product.

What Guava Dog tastes like

Guava is the lead and it is a distinctive one. It is a softer, muskier tropical note than pineapple, with a slightly floral, almost perfumed edge and a sweetness that is rounder and less sharp. If you have had guava juice, that is the register: fruity but heavier than citrus, and a little unusual.

The Dog part of the name gestures at the Chemdog family, the same way OG does elsewhere in the range, and it suits the profile in that there is an earthy, faintly savoury note underneath the fruit. Against the sweeter flavours it is the most complex of the ones we stock, and the least likely to read as a sweet shop.

The hemp base sits comfortably with it. The muskiness of the guava has enough weight not to be flattened by the green, resinous character of the pressed material, so this is one of the more balanced flavours in the range rather than one where the infusion fights what is underneath.

The manufacturer's own description of it, as for every flavour we have checked, runs to four or five words. Ours does not.

Who should choose differently

If you want something simple and immediately recognisable, guava is the least familiar flavour in the range and its musky, faintly floral quality divides people more than the sweet ones do.

If you want a concentrate, this is not one. The stated content here is 175mg in 3.5g, and the solid extracts and washed grades on our hemp and hash shelf state several times that.

If you want something usable straight from the container, a briquette is a solid block and needs breaking down first. The brand's loose Premium Hemp Blend is the same material ready to use.

If you are buying partly for the flavour and it will sit unopened for a long time, read our Gelato page first, which covers what happens to an infused aroma over time and how to slow it down.

Over-18s only. This is not a food and it is not a medicine, and nothing here should be read as suggesting otherwise.