Edibles are potent, delicious, and healthier than smoking - but a too-strong cookie or brownie is a harsh mistress, potentially engendering trips bad enough to scare people off cannabis permanently.

Large-scale edibles manufacturers have the ability to put their medicated products through multiple testing phases - and more sophisticated processes are being developed to determine potency all the time. But for the home cook, consistency is trickier to achieve: all cannabis extractions are different, all strains are different, and not everyone wants to do the math involved to figure out the potency of homemade edibles - which, even if done perfectly, can still return faulty results.

In a world where alcoholic drinks clearly list alcohol percentage, and breathalyzer keychains exist to help estimate impairment from booze: how long until cannabis consumers are able to quickly, easily, and accurately test the potency of the edibles they're consuming?

Not, it would seem, that long. Northern California's Engineered Medical Technologies is developing tCheck, a handheld device that aims to provide a way to test the potency of home-infused butters and oils.

A simple four-step process to test THC content

Users infuse the oil with herb, then place a few drops in the device tray, and press go. In less than a minute, the oil's Relative Potency Index will be displayed on the screen in milligrams per millilitre, which lets you then figure out your ideal dosage of cannabinoids. It's usable with pretty much any oil people commonly infuse, from oil and butter to ghee, coconut oil, and vegetable oil.

While there's not a lot of information available about how, precisely, tCheck analyzes the CBV, if it's "right the first time," as manufacturers claim, it could be an important advance in reliably making edibles at home - which, for medical users in particular, could be a game-changer.

For now, tCheck it appears to remain in the concept phase (although Engineered Medical Technologies is taking preorders for the $250 device):