The Beam test
Page 127 (or page 134 for PDF reader)
Each CBD strain tends to have 3-5 "Phenos". So it is good to try to test out each "Pheno" to learn what the high CBD phenos look like. Using the Beam test is about the same process they use at any testing lab just being done without the lab.
Here is how Chimera describes it
"Page # 127The Beam Test aka Beam's Test
If you read the section "Colorimetry" in the first paragraph on Page #127 you will see a simplified method for detecting CBD using a spot test called "the Beam test"
The needed reagents are:
5% KOH(Potassium hydroxide) in 95% ethanol
(5g KOH in 100 ml 95% ethanol)
Petroleum ether, Naptha or other organic solvent to remove the cannabinoids from a sample of your choosing.
Place 1-2 grams of your sample flowers in an oven until dry @ 150 degrees Celsius for 5 minutes. Extract in a small glass vessel (shot glass?) for 10 minutes in 10 ml of your Petroleum ether, other organic solvent, naptha, etc.
Filter and remove the leaf material using a coffee filter or similar, catch the liquid extract
Take 1 ml of the extract and dry on a white porcelain dish like an egg cup, saucer, or similar. (Gently heat the dish to evaporate the liquid phase of the extract). You will have a dish with remnants of resin leftover once the liquid has evaporated.
Place 5 drops of your 5% KOH in ethanol solution on your plate, and wait about 10 minutes. You will see a distinct violet/purple/pink color from samples containing CBD which could be Chemotype II or III plants - in the case of CBD Lullaby they will be only Type I and II plants- THC only plants (chemotype i) will not show this colour.
It's a relatively simple test and anyone can do it, you just need to order KOH from Amazon or your local soap making store and pick up a solvent from your local hardware store. The ethanol will probably be the most difficult thing to source, but it is available as "Everclear" or 190 proof ethyl alcohol from your local provincial or state run liquor store, depending on your location.
Hope that comes in handy....
Phenotype/chemotype 1 is THC only, type 2 is CBD/THC mixed and type 3 is high CBD and no THC