Regarding Mixing / diluting / buying high mcg Concentration from Androtics
"I believe what you’re commenting about is more towards applying individual components separately by either spray, dab, or drop from a bottle. If I were to try to apply a drop of 5000 mcg /ml component, there would be very little accuracy or precision possible since the method only allows for specific unit quantities of distribution (1 drop, 1 dab, 1 spray). In that respect, you would be correct with your assertion. However, in the context of mixing in a bottle, that no longer applies since we are combining multiple components together in a process that by definition dilutes the concentration of the component and is affected by the quantities (volumes) of other components.
For example, if I were to mix 2 ml of the 5000 mcg /ml component with 8 ml of alcohol, that would produce a mix of 10 ml with a component concentration of 1000 mcg /ml since it only composes 20% of the mix. Now if I were to mix 2 ml of the 5000 mcg /ml component with 98 ml of alcohol, a 100 ml mix with a component concentration of 100 mcg /ml would be produced (2% of mix)." - Dancing Joker
"Let’s say we have some pheros A (2.5 mcg /spray), B (2.5) and C (5 mcg /spray). We use 1 spray of phero A and 2 of B and 2 of C. Our actual amounts sprayed are 2.5, 5, and 10 mcg (easy, huh?). We want to make a mix from higher concentrations so we don’t need to spray 5 sprays all the time.
Hang in there’ it’s good, I promise…
If we get a regular bottle (30 ml) of pheromones A and B, and the concentration is 12.5 mcg per spray, then at 200 sprays per bottle that gives us 2500 mcg of pheromones in each bottle. That means each ml of liquid contains (2500/30) or 83.33 mcg .
A bottle of pheromone C with 25 mcg /spray has 5000 total, and that’s 166.67 mcg per ml.
Stick with me, it gets better. 
We want to make up a full bottle (30 ml) in these ratios. Our total of the parts is 5 (add them together) and 30/5 is 6, so we use:
(30/5) = 6 ml of A
(30/5) x 2 = 12 ml of B
(30/5) x 2 = 12 ml of C
which is the same ratio as above, 1, 2, 2.
Now, we have in our bottle:
6 x 83.33 mcg of A = 499.98 mcg of A (call it 500)
12 x 83.33 mcg of B = 999.96 mcg of B (call it 1000)
12 x 166.66 mcg of C = 2000.04 mcg of C (call it 2000)
Here’s the climax (ooh!)
Each spray of the new mix delivers:
500/200 = 2.5 mcg of A
1000/200 = 5 mcg of B
2000/200 = 10 mcg of C
Voila!
If only ONE is scented, then you would get a diminished scent depending on which component it was. If all three were scented the same, the one spray would have the same intensity of scent as one spray of any of the components.
Of course, if you were using the lower original concentrations, then you would need 5 sprays (and get 5 times the scent of one spray). And remember a to-go delivers only 83.3 percent of the regular bottle!" ** -Fra Septimus**
This information comes from a post back in Dec 2007. I posted it here for easy access for me as well as people who buy androtics products to make use of higher mcg purchases. This is available to all since androtics also sells mixing supplies as well as PA and bottles to create your own mixes and cut the Putatives and experimones down on your own.
