Distilled water can vary a lot from bottle to bottle, even from the same batch. Before I got my distiller, I used to check that really carefully, and was amazed at how much it varied. One brand had a time stamp, too, so I'd try to get bottles with times very close together, and even so they varied a lot.

Angel, I went through tyring to be able to make clear CS consistently for over a year. If you don't have a PWT water test meter, so you can know absolutely what you are starting with, it is going to be next to impossible to figure out. In fact I never did figure it out. What happened was that finally a method was devised to enable me to make consistently clear CS. Never did figure out what the contaminant is. My situation is rather extraordinary---the great majority of people who make CS do not have to go to such trouble as is necessary for me.

A water test meter will allow you to 1) test the DW in a known clean container (the method of cleaning that works best for me is Trem's--run the jar (and lid!) through the dishwasher, rinse several times in very hot tap water, then rinse with distilled water. It is important to do the jar lid the same as the jar, as contaminants from the lid can cause problems, too.) 2) keep one small jar just for testing distilled water--keep it covered when not in use) 3) If you ever have a batch go yellow, you can rinse the jar with DW, test some DW in your test jar, then fill the brew jar with the same DW and test again, to see if some contaminant in the jar is adding conductance to the DW. 4) If you decant the finished CS into another container, keep the brew jar covered with the clean lid when not in use. 5) keep the generator with electrodes plugged in but the power supply unplugged, sitting on another clean small jar when not in use.

And on and on...............and to further confuse the matter there are contaminants that do not have conductance and so don't show up when the water is tested with the PWT. However use of a PWT will allow you to eliminate all sources of contamination you can control.

I only use white paper table napkins, dampened with DW to wipe off the silver electrodes. Never touch the electrodes with your fingers. Never touch the inside of the brew jar with anything, after cleaning them as above, let them air dry on a clean paper towel.

And still yellow CS is fine, clear is better. But the standard for many years was golden or light yellow, or that is what people here have said.
sol

P.S. The overwhelming cause of yellow CS here was poor distilled water.

Marshall Dudley wrote:

I would suspect two things.

The container is not completely clean.  That mean absolutely no soap residue.
In fact I normally do not recommend cleaning the contain with soap or anything
else, it will add more contamination than it removes.

The quality of the distilled water. Are you using the same brand?  I have found
some brands to be very variable in quality from batch to batch.  If that is the
case you may try a different brand, and if you have to find a batch of a brand
that works, and stock up on that batch number.

Marshall



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