Hmm. what kind of salt is this?

[DKAudio]

SALT BATH PUBLISHED RH AT 25°C
LITHIUM BROMIDE 6.37%
LITHIUM CHLORIDE 11.30%
POTASSIUM ACETATE 22.51%
MAGNESIUM CHLORIDE 32.80%
POTASSIUM CARBONATE 43.16%
MAGNESIUM NITRATE 52.89%
SODIUM BROMIDE 57.57%
POTASSIUM IODIDE 68.86%
SODIUM CHLORIDE 75.30%
POTASSIUM CHLORIDE 84.34%
POTASSIUM SULFATE 97.30%

I found the above chart. Currently am salt testing my hygro and it is sitting at 68%. The brand of salt I have is Morton Iodized Salt. In the ingredients it says the following...
Salt, calcuim silicate, dextrose and potassium iodide.

Does that mean that my test should be reading 68.86% which means my hygro is spot on?

 

[khari]

The first ingredient listed is salt, which we all know is sodium chloride. The potassium iodide is just to iodize the salt and represents a relatively small amount of the ingredients. You should go by the 75% number.

 

[DKAudio]

Bummer, thought I lucked out on my hygro.

 

[Marcos]

I would agree with Khari. Ingredients are listed from highest amount to lowest. Salt (Sodium Chloride) is first so that is what you should go with.

 

[NullSmurf]

Will those quantities of added ingredients, including the potassium iodide alter your results? Yes, they will. Will you notice or care? No, you won't unless you need .1% accuracy

 

[DKAudio]

At 25-26 hours (was gone for most of the night) RH was 70%

At 12 hours it was 71%

Looks like it is 5% off.

Thanks for the help

Dan