If i get deflated eggs, i simply spray a little water around the eggs.
When the eggs are coming up to hatch the (organism) inside will soak up most of the moisture giving the egg a deflated shape again, no need to worry about this though.
A solution containing sodium chloride, sodium lactate, and phosphates of calcium and potassium; used intravenously as a systemic alkalizer and as a fluid and electrolyte replenisher.
just for the people wanting the hartmanns solution i found this website. it looks as though you can purchase from there. it does say to use only if your a vet but i guess thats cause it is typically used with syringes in IV