I bought a Socrates form for power of attorney I seek for my elderly parents in CT. Do I need one form for each parent & who keeps the original? Thx!

I am also not familiar with that particular form. However, I will strongly suggest that you consult with an attorney before using any form.  Every state has different laws and a Power of Attorney must be executed properly to be effective.

First, the form you plan on using may not be appropriate for the purposes you have planned depending on how simple or complex the situation.

Second, with that said, you will need separate power of attorney for each of them. The originals should be kept somewhere safe and fireproof. Be sure to make copies. 

I'm not a Connecticut lawyer, and I'm not familiar with the particular form you've purchased. But I'd say it's always safer to have a separate power of attorney for each person.  The person named as receiving the power (you) would want to keep the originals, to make copies for people you'd be dealing with on your parents' behalf.

I'd suggest that you get a basic consultation in elder law from an attorney.  You will need to keep detailed records of what you do for your parents, and you need to understand what sorts of things can get you in trouble for misusing the power of attorney.