Blends, especially ug's are complicated and often high mg per ml as a selling point. Alot of ppl want a higher mg per/ml to drop the pin count, but it's not worth the discomfort. There's alot more irritant added to the solution to keep the high dose of gear in suspension. Think about it, if it wasn't about irritation, pharms would make 1000mg/ml cyps and enths and 400mg props!
250/300mg per ml should always be painless with good gear so don't bother with the high mg stuffs, deal with the pins and always try your ass off to be sterile. :st:r-wars