The pens do work, but there’s a frustrating nuance that matters for dosing. To check accuracy, I measured 10 clicks (a click is supposedly one unit). Using water as the test substrate, each pen dispensed a variable weight—usually 65 to 85 percent of the intended dose, which is unacceptable. The interesting part: when I pushed the plunger faster than most people would want to inject, accuracy jumped to 95 to just over 100 percent, which is accurate enough for what I’m using them for. Beyond the accuracy issues at normal injection speed, 2 of them are noticeably less smooth than the others.
A+++
Works exactly like I was hoping and expecting! Well made!
I highly recommend PepEquip! Website is easy to navigate and shipping is super quick! Love the stickers.The experience was so good that I recommended to my son. I have ordered the Savvio and the V4’s - love them both. I am currently replacing my V2’s with these.
overall I love them. A couple of them don’t seem to have a smooth moving mechanism but I still prefer them to the regular syringes.