Specific Gravity of KOH :
27% = 1.2592
28% = 1.2695
29% = 1.28
30% = 1.2905
BoyntonStu
More complete table here: http://www.ashtachemicals.com/products/kohchem.htm#sg
Specific Gravity of KOH :
27% = 1.2592
28% = 1.2695
29% = 1.28
30% = 1.2905
BoyntonStu
More complete table here: http://www.ashtachemicals.com/products/kohchem.htm#sg
Good info boyntonstu...I was wondering that...
"You don't always have to know ALL the answers, but you do need to know where to find them."
Thats good info . now all we have do is fine a hydrometer or Refractometer that can read that range.
Any luck on finding a hydrometer that can read these ranges.
I found these, I think the lower one should be OK. http://sciencekit.com/hydrometer/p/IG0023641/
Is it 28% by weight the Ideal concentration?
If so would 0.5 lbs of Noah or KOH and 1.0 lbs of water = 33% concentration?
28% is ideal for most dry cells,but an openbath type would overheat quickly and the amps would spike high as well.I use 33% in my dry cell which works out to over a pound of koh per gallon distilled water.
I think the hydrometer you mentioned is the same that saltwater aquarium owners use to test salt content in their tanks
Is the purpose of this to determine when the maximum efficient concentration has been reached?
If so, why not use a multimeter to measure the resistance across your electrolyte as KOH is added, and stop once the resistance becomes static?