Skybound
Well-Known Member
makes a solution of approximately 147ppm which will work well with a wide variety of plants. 100ppm also seems to work very well also.
Recommended dosage is 100-145ppm.
I just read what they had on their site, that you pasted. The vial in a gallon makes 147ppm which is more or less 150. If suggested dose is 100, you could take 1/3 of that 147 and put it to 2/3 more water to make a gallon of 100ppm. Add another gallon to that and have 2 gallons of 50ppm, while still having 2/3 of a gallon of the original 147 to mix out into other concentrations.
I did a web search for "cannabis methyl jasmonate" and a lot popped up including a thread on THC Farm from 2012, plus I remember seeing other hits that I never looked into, so there should be more info out there to get you more information to help make decisions with.