Brine for brine shrimp

[idris]

I've been hatching brine shrimp and bought a new pack of aquarium salt. The salt in the new pack is slightly more yellow and has coloured the water green, where the old pack didn't.
I'm pretty sure both packs were Interpet, though I may have bought Aqualibrium one time and Aqua Tonic Salt the other. (Unfortunately I haven't kept the boxes for either pack.)

The Interpet website says ...

The only difference between the two products is that Aqualibrium prevents the pH from changing dramatically, which can stress the fish.

Any idea what the difference actually is, which salt I've ended up with, and whether it'll still be ok for hatching Brine Shrimp.