i have several kits of ssa hcg and have never found it to burn. i adminsiter it sq in belly 500x3 m/w/f when i used it for around 3 vials while i was changing insurance handling for my scripted pregnyl. i think it was overfilled at like 6000 iu. i only use hospira 0.9%BA for recon for bac. no pip no welts, worked fine and kept my boys alive til i was able to get back to my normal pregnyl.
also been using the blue cap april promo rt20 and was part of a private group test for that, with absolutely zero issues. again using the same hospira.
im now using the h36 black tops from them that measured 40 iu (i have 4 kits) and those have been fine also.
a friend of mine has been using a july purchased orange cap t30 and again, zero issues. what are you using to recon and how much?