These come with graduated droppers which is nice, but for smaller doses such as T3, count the drops per 1/2ml, then figure out the number of drops to use.
Some of these RC’s are not in solution, but have solids and must be shaken into suspension before measuring. If there is liquid in the dropper tube when you shake the bottle, the liquid in the dropper tube is not getting mixed with the rest of the contents. This could produce a weak dose and the remaining contents in the bottle would get more potent over time. So empty the dropper tube after use and attach empty ready for shaking with the next usage.