The pHi-Tech devices currently have injectors that can deliver a dosage of 0.05ml-0.6ml.
When using a dual device (rather it's the dual\twin injection head) with two vaccines and different dosages, please notice you put the lower vaccine dosage in the Secondary unit.
Setting a vaccination program on the Mobile App
The mobile app will alert you when working in Oil&Oil with 1 needle and won’t let you select a smaller dosage for the secondary unit.
Setting a vaccination program in the Device
The vaccine with the smaller dosage is connected and configured to the Secondary unit.