Trappn, I apologize.
The liquid concentration is determined by the number of ounces in the bottled divided by the stated number of loads on the bottle. The Precision Dispense system allow the user to vary that based upon the hardness & softness of your water. I have very hard water and was able to adjust the amount dispensed based upon hard water. Now that I'm using STPP, I've adjusted to water hardness to both Normal and Soft to see which setting works better and help me save on detergent. And that was the case until the latest generation
of Whirlpool & Maytag front loaders was release 3 years ago this coming fall. The manual states to still do the above calculation of ounces/loads on package to determine concentration setting. But there is no allowance/variance allowed for water hardness/softness. Whirlpool's current WFW9620 is the only model that offers two detergent reservoirs. They are two different fluid sizes. The default arrangement is the larger reservoir is intended for detergent and the smaller one is intended for fabric softener. The user manual states the smaller reservoir can be changed to being used as a 2nd detergent reservoir so 2 different detergents can be stored simultaneously. Another forum I participate in, there was an individual who had purchased the 9620 for its sophistication, flexibility, and ability to download added cycles. She bought an early version of the 9620 and the reprogramming of the 2nd reservoir from fabric softener to detergent did not function due to software and she was very disappointed and frustrated. Whirlpool hadn't resolved the issue almost a year after purchase, but she's not posted any additional updates. The LG system has a default amount of detergent dispensed. If the detergent being used calculates to a different concentration level, that can be easily adjusted and saved. the system also allows for individual load flexibility to add more or less for an individual load. All 3 systems also vary amount dispensed based upon the sensed load weight as well as soil level selected for the load. I hope this answer your concerns, if you have futher questions, please do not hesitate to ask.