[Sticky] Building a quantitative verification tool for the Bengston method

As mentioned in the Yeast experiment thread I am attempting to construct a more controlled environment for the test than just popping gloves over bottles.

I have since started to built a test environment that should allow very precise calibration (I hope). The test only works with programmed water.

Each sample size is 1 liter or 1000cc. It gets split into 5 individual samples of 200cc. To this a pre-defined amount of pulverized sugar is added (5g) and a pre defined amount of yeast. The sugar is added to the water, the dry yeast is pre-hydrated in water and a defined amount is added to the 200ml test water/sugar solution. 5 identical preparations are made with un-programmed water from the same source (Vedica mineral water) as controls.

My setup allows for 3 or these 5-part samples to be tested against the controls at the same time. 

All samples are pre-heated to 35C in a water bath (digitally thermo regulated to +-1C) for optimal yeast reaction.

The sample bottles are air tight with a pressure sensor on top which starts recording as soon as the pressure rises above the air pressure.

A Raspberry Pi Pico takes the 20 input streams and sends them via USB to a Linux notebook where they are converted to a graphical representation of the pressure increase vs time elapsed. 

There is no telling how and if Bengston water will react to Yeast chemistry but there is a good chance it might. The entire shebang is not cheap but one has to have a hobby, right?

I will continue to report on my progress here - if it works for the water I prepare I will invite others to supply me with one liter of their programmed water to get some baselines (and it may be good to evaluate daily fluctuations in input quality, the effect of "transferring" the information to base water, the time factor - how much is too much and how much is ineffective - and a few other questions.