# Diluting a P75 12.5mcg to-go down to 2.5mcg with perfumer's alcohol: the math **URL:** \ **Category:** Men's Pheromone Advice & Field Reports\ **Created:** [October 12, 2009, 11:38am UTC](https://pheromonetalk.com/t/diluting-a-p75-12-5mcg-to-go-down-to-2-5mcg-with-perfumers-alcohol-the-math/33228 "2009-10-12T11:38:31Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![BubbleCatcher](https://avatars.discourse-cdn.com/v4/letter/b/ebca7d/32.png) [@BubbleCatcher](https://pheromonetalk.com/u/BubbleCatcher)\ **Post date:** [October 12, 2009, 11:38am UTC](https://pheromonetalk.com/t/diluting-a-p75-12-5mcg-to-go-down-to-2-5mcg-with-perfumers-alcohol-the-math/33228/1 "2009-10-12T11:38:31Z")
Hello, i have a togo of [P75](https://pheromonelabs.com/product/p75/) 12.5 mcg but from reading the post on P75 it is best used in low doses, i have some Perfumers Alcohol and was wondering the best way to dilute to get 2.5mcg from a togo spray? cheers ---
**Author:** ![BubbleCatcher](https://avatars.discourse-cdn.com/v4/letter/b/ebca7d/32.png) [@BubbleCatcher](https://pheromonetalk.com/u/BubbleCatcher)\ **Post date:** [October 12, 2009, 2:15pm UTC](https://pheromonetalk.com/t/diluting-a-p75-12-5mcg-to-go-down-to-2-5mcg-with-perfumers-alcohol-the-math/33228/2 "2009-10-12T14:15:42Z")
Hello, ok had a go myself but not sure if correct. 0.5ml [P75](https://pheromonelabs.com/product/p75/) add PA to get following 0.5ml = 6.25mcg 1ml = 3.125 1.5ml = 1.56 am i on the right track? cheers ---
**Author:** ![Warren](https://avatars.discourse-cdn.com/v4/letter/w/97f17d/32.png) [@Warren](https://pheromonetalk.com/u/Warren)\ **Post date:** [October 12, 2009, 2:18pm UTC](https://pheromonetalk.com/t/diluting-a-p75-12-5mcg-to-go-down-to-2-5mcg-with-perfumers-alcohol-the-math/33228/3 "2009-10-12T14:18:31Z")
You’ve got 12.5mcg per unit volume (the volume of a togo spray in this case). You want 2.5mcg. 2.5 is one fifth of 12.5 (i.e. 2.5 \* _ **5** _ = 12.5) Therefore, you want five times the volume to get one fifth the concentration. If you have one ml of [P75](https://a314.com/product/p75/), you want to increase it to 5 ml. Therefore, you ADD FOUR ml. The easiest way to measure is buy buying [pipettes from the store (click here)](https://pheromonelabs.com/). They are only a buck each. Alternately, with a pen, carefully mark the level of 12.5 P75 on the side of the togo bottle. Make sure it is accurate. Pour the P75 into suitable container. Using the now empty togo as a measure, fill it up to the mark with perfumers alcohol and add that amount to the P75 – do that four times, so you have five times as much. If you have more 2.5 mix than will fit back into the togo bottle, be careful how you store it. It will evaporate quickly from jars which do not seal very tightly shut. Let’s take another example. Suppose you want 1.25mcg. That is one tenth the concentration of the 12.5mcg you have. To get ten times the volume you have, you ADD NINE times as much alcohol. ---
**Author:** ![Warren](https://avatars.discourse-cdn.com/v4/letter/w/97f17d/32.png) [@Warren](https://pheromonetalk.com/u/Warren)\ **Post date:** [October 12, 2009, 2:26pm UTC](https://pheromonetalk.com/t/diluting-a-p75-12-5mcg-to-go-down-to-2-5mcg-with-perfumers-alcohol-the-math/33228/4 "2009-10-12T14:26:12Z")
> [@BubbleCatcher](#): > > Hello, ok had a go myself but not sure if correct. > > 0.5ml P75 > > add PA to get following > > 0.5ml = 6.25mcg > 1ml = 3.125 > 1.5ml = 1.56 > > am i on the right track? > > cheers 0.5ml = 6.25mcg _CORRECT_ You now have twice the 12.5 vol 1ml = 3.125 _WRONG_ You now have three times the original vol =\> 4.167mcg 1.5ml = 1.56 _WRONG_ You now have four times the original vol =\> 3.125mcg ---
**Author:** ![BubbleCatcher](https://avatars.discourse-cdn.com/v4/letter/b/ebca7d/32.png) [@BubbleCatcher](https://pheromonetalk.com/u/BubbleCatcher)\ **Post date:** [October 12, 2009, 2:42pm UTC](https://pheromonetalk.com/t/diluting-a-p75-12-5mcg-to-go-down-to-2-5mcg-with-perfumers-alcohol-the-math/33228/5 "2009-10-12T14:42:39Z")
Thanks Warren, yep i have pipettes and empty togo bottle so will give this a try. Will probably go with 0.5ml [P75](https://a314.com/product/p75/) and then add 2ml PA to get the 2.5mcg [PheromoneLabs](https://pheromonelabs.com/)