Any recommended Dosing pump

[fred73]

Hi

 I bought few cheap Chinese Peristaltic Pump and during calibration it is accurate but after it will be very inaccurate 

Instead of 5 ml it will give 2ml or 10 ml depending on its mood 

Any recommended pump you guys are using that are quite accurate.

Any reason to stick to Peristaltic Pump and not use a small diaphragm pump instead

Looking at these one 

Peristaltic Pump 12v 
https://www.aliexpress.com/item/32891315...3c00VIzleM

diaphragm pump 12v
https://www.aliexpress.com/item/46805659...4c58TPrNep

Cheers