Difference between these two campden tablets?

Kristi said:

I have these ones:
http://www.amazon.com/dp/B00838WH0W/?tag=skimlinks_replacement-20

But I also see that these are available and sometimes recommended in recipes:
http://www.amazon.com/dp/B0064O9HWI/?tag=skimlinks_replacement-20

Do these work differently? Change the flavor of a brew? What is the difference between the two?

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sour_grapes said:

Go with the potassium. There is little difference between the two, but who needs more sodium in their diet?

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sour_grapes said:

Go with the potassium. There is little difference between the two, but who needs more sodium in their diet?

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