MyDX is a great concept, but as far as accuracy, it has some obvious limitations. Its sensors attempt to match a digital fingerprint to a known array of known results, that means that its accuracy is always improving.
Great idea and truly a great product at that price point!
What about the all-analogic alpha-CAT ? Their demo video is mesmerizing. Very affordable. Seems fun, but time-consuming.
Then you go up in price a couple tenfold into the world of spectroscopy analysis, which is at all effects, laboratory grade accuracy. The only reason why cannabis laboratories are not using it is that it’s not an ISO accreditable instrument (yet).
Here is a (non hexaustive) list of some instruments that I saw in action, in the 5,000 - 25,000 USD range:
Frankly, it would be silly to think that the accuracy of an HPLC (and a trained technician) could be matched - but these are perfect instruments to perform continuous QA on your products just before the final measurements performed by a licensed lab.