Sorry if this idea has been suggested already... A cursory search didn't turn up anything, so...
I remember years ago, my father would water and fertilize his garden with a hose siphon like this:
It connects in line with the hose, and the small black line was placed in a bucket of diluted fertilizer. When water was run through the hose, the fertilizer was sucked up the black line, and mixed with the water. This got me thinking.
The siphon above mixes at 16 parts water to 1 part fertilizer. I would replace the black hose with something food safe. The remaining problem is figuring the proper ratio to arrive at the 10z. in 5 gallons that Starsan requires.
1 ounce Starsan per 5 gallons water
= 1 ounce Starsan per 640 ounces water (128oz per gallon x 5 gallons)
Since the siphon dilutes at a ratio of 16:1,
640/16 = 40 ounces Starsan (undiluted) per 5 gallons water.
1 gallon / 40oz
= 128oz / 40oz
= 3.2oz per gallon
1/40 times 1/16 equals 1/640.
A concentrated Starsan solution of 1 part Starsan to 40 parts water (3.2oz per gallon) in a bucket, diluted 16 times through the siphon, should give the proper ratio.
Screw one of these on the bottom of the siphon:
And you've got a quick bottle sanitizer.
Thoughts? Comments? Am I crazy?