Pump for liquid AC charging

[Elb.ab]

Hello guys
I'm working on a test bench where i need to charge a refrigerant into the ac unit. I m trying to charge it with liquid and at high flow (100g/s).
are there pumps used specifically for refrigerant (R134a)?
Thank you.

 

[micalbrch]

Canned motor pumps. Check GRUNDFOS or HERMETIC.

 

[Elb.ab]

Thank you for your help.
I've checked in HERMITIC, they have these kind of pump except that they work at high flow (12-50 m^3/h), I'm looking for smaller flow range ( 0-0.4 m^3/h) (0.1 l/s).