I need some help and\or understanding, please

[BaileeRyce]

Tirz 30mg strength vial, want 5 mg dose, reconstituted with 1.5 ml BAC for 25 units for 1ml syringe, expecting 6 doses but only get 4

I pull a touch more water because I filter (.22μm PES 4mm) but, where am I losing my water? 2 whole doses is a lot to lose. Do I need more BAC due to filtering?
Please advise 🙂

 

[jw717us]

Your math works and the outcome I think matches what is expected....4mm PES filter absorption is about 7 units per filtration. 4 doses x 28 then add dead space on your draw? I could see losing 2 from that. 2mL BAC would get you closer to what you expect.

 

[DjJoshua]

Here is a video that can explin a bit on loss and how much loss one can have with filtering. Hope this helps on that part.

View: https://www.youtube.com/watch?v=0EHHXTdlYCw

 

[TooBigtoFail]

You would need to put more details to see where you are loosing so much.
How wide is your filter? A 13mm filter can hold back 15u - 28u.
I use 3ml and 5ml bulk syringes to handle bac and filtering. They are less accurate, and the syringe itself hold back a few units of liquid.
I normally loose ~10% in filtering small volumes. I try to push some bac water into the new filter first. When I filter the recon with my 3ml+ syringe, I make sure it has a good amount of air, so at the end, I push air thru the filter to squeeze a few cc out. I also always use 40u+ per dose for glp, 50u for ghk, mots, to limit filtering losses, and isr.

 

[BaileeRyce]

Here is a video that can explin a bit on loss and how much loss one can have with filtering. Hope this helps on that part.

View: https://www.youtube.com/watch?v=0EHHXTdlYCw

That was a great video on explaining and showing!
I've read about the "loss" but, that was the first time I saw it demonstrated.
I appreciate it. Thank you!