Castor oil: thinnest Luer lock needle for drawing ?

[y777]

Hi guys

Folks who brew/use castor oil solutions, what drawing needle do you use ? I use 18g needle to draw and 25g to pin.

have any of you tried to draw with a thinner needle , like 20,21 or 22g ?

Trying to see what’s the best trade off for damage to the stopper vs ease of drawing.

I’ve drawn castor oil with a 27-28g slin pin when I’ve pinned subq but for IM, when using luer lock those high gauges won’t work.

Anyway , appreciate any feedback /experiences shared

Thanks

 

[Spaceman Spiff]

are you brewing this? I draw with a 22 gauge just fine.