care of @Photon_noir
Alkaline Beam Test: Colorimetric testing for CBD
Preparation of Solution & Workspace
- Fill plastic graduated cylinder with about 70mL of 95% ethanol.
- Weigh out 4g KOH on wax paper and add it to alcohol.
- Swirl or stir with stainless or glass rod to dissolve all KOH.
- Finish filling graduated cylinder up to 100mL line with ethanol
- Label the clean glass jar “5% KOH in EtOH, CBD Beam Test” or similar, then pour the entire solutioninto the jar and seal the lid. Swirl a bit to mix well.
- On a paper towel next to the jar, write “Beam” or similar and place a new plastic pipette on it.
- On another paper towel next to the reactor, write “RXN” or similar and place a new plastic pipette onit, also.
- Set up several test tubes with lids in a rack next to the KOH solution and Beam pipette.
☆ Sampling & Testing
- Squirt the rxn solution sample into the uncapped test tube in the rack.
- Unseal the jar and remove the lid (or lid ring) to pull a little bit of KOH test soln from it. Only a fewdrops are needed.
- Squeeze one (1) drop test soln into the tube with the rxn sample and swirl the tube for 2 seconds tomix.
- Observe the color after 5 seconds. If color is light or invisible, add 1 to 3 more drops of KOH soln,swirl 2s. Odd color may show up upon resting for too long or excessive stirring, so only read color reactions that occur immediately (i.e. 1st color under 30 seconds).
7. Take notes with time and dispose of sample.
if you’d like to buy that, I’m happy to take donations.