Peptide Critic Community

This happened to me to with the same gold V4. I have 6 V4s and it only happens to the gold one. I do what Randy recommended and push a little harder.

@ResearchCat Thank you. I didn't think of recalibrating the loaded cartridge. That makes perfect sense.

Hello Everyone!

I am new to the community, and I am starting my pen journey.

Does anyone using injector pens use different vials of peptides in the same pen?

I have one on the way, a new V4, and I was wondering if I could use BPC and GHKCU on the same pen, but with different 3mm vials. I didn't want to spend the money on multiple pens before I get more familiar with the pen.