Difficulties injecting, high resistance plunger

[Juicedhead]

Sounds like you got some defective product. Use easy touch brand on amazon.

 

[bananafeet]

The smaller the barrel plunger the more force you can exert on the oil per distance of the plunger traveled.


So basically it's easier by a lot to push oil through a 1ml syringe with a 27G 3/4" needle head than a 3ml with a 30G needle head.

I use these to easily inject Arachis oil using a 27G or EO with a 30G:

Luer Slip Syringe without Needle - Concentric Nozzle (1mL) - Medical Products

The 1mL luer slip syringe with a concentric nozzle offers the broadest range of clinical applications. It also features a conical shaped stopper. Learn more.

www.mdevices.com.au

(I front load these).

They are 1ml with a very small plunger and a long barrel. Luer slip (cheap).

I have those BG syringes. They are very nice but I also had the same issue. They get misaligned from the excess force or pushing the plunger down on an angle and the rubber part gets caught on an angle and digs in.

 

[Elektrobot]

These are the only no rubber luer lock syringes I've found

Air Tite AML1 Link