Yoghurt analysis

Hello everyone 🥰

I need your ideas, suggestions and recommendations on the appropriate machine to use for analysing the physiochemical properties (like fat, SNF, etc) of yoghurt.
Most milk analysers I've used go faulty over time even with proper cleaning and calibration. On one of the cases, I contacted the manufacturer and he stated that the machine is for raw milk and not yoghurt.

Thanks for helping 😊