from "Salvia divinorum extraction FAQ", by Sphere:
When using the sample method of making enhanced leaf I like to use an extra amount of Salvia leaf to make up for
possible extraction inefficiencies. In this simple method six grams of leaf are being extracted and placed back on one gram to
make 5X leaf. Since a total of six grams is being extracted to place back onto one gram of leaf the total amount of leaf used is
7 grams to make one gram of 5x which should be every bit as potent as standardized 5x leaf, more than likely closer to 6x.
Want to make something stronger using this method? Not recommended because of the increased amount of waxy lipid
compounds placed back onto leaf in higher concentrations any more than a ratio of 6 to 1 is about as high as you can go
without ending up with a very gummy and harsh burning leaf which produces too much smoke for most people to hack.
i have read this from a completely secure source, but i cannot remind where it was from anymore, i'm sorry. i just found the above text. but i'm not 100% certain of it.