actually you can taste an salt, or acid just a drop to tounge spit and rinse. acid will bite the tounge bitter,
(a caustic on my hand make them slimmy making soap out of my dead skin and its oil)
of coarse you can test for acid or base useing the PH meter, or test strips, or red cabbage or phenophthaleine, methal orange etc.
if you suspect salt
You could also see if it dissolves easily in water.
Another test I would use is add to silver nitrate, it would precipitate silver chloride.
sodium in a flame burns bright yellow to orange.
pool store will sell you test kits to test for chlorine or table salt.
if you know what ingrediants you used to get this salt (white precipitant) you can usually tell about what it is by looking at the chemical reaction that created it,
acid and base muratic acid and caustic soda makes table salt water
HCl + NaOH = table salt NaCl + H2O water
so your hydrochloric acid and sodium hypoclorite base can make table salt look at these reactions.
lets make bleach
2NaOH + Cl2 --> NaCl + H20 + NaOCl (bleach)
now look at muratic acid and bleach
HCl + NaOCl --> Cl2 + NaCl + H2O
notice the salt? notice the chlorine gas?
now in the above equation some Chlorine gas Cl2 + H2O water would change back to HCl muratic acid and HOCl bleach
CL2 + H2O --> HCL + HOCl
now these equations are not showing the reaction you have with your metals, and as these salts form they can grab your metals with them in the crystals.