
SAFER is better!! IMO, You don't put amps in the fridge because they are SEALED in a bacteria free environment (hopefully) Once you open the amp and expose it to air, it is no longer sterile. If you must store in a syringe, I would at least keep refridgerated until using and not longer than a week. Numerous products are find sitting on the shelf, but they tell you to preserve freshness "REFRIDGERATE AFTER OPENED" but again it is just my opinion. But then again I wouldn't split an amp. I would just stick it all in !!!
Good luck bro