How to ask the sentence properly?

[E2e4]

Are the fluid acceptance field checks on viscosity and pH performed?
Are the fluid field checks on viscosity and pH performed?
Are the viscosity and pH field checks of fluid performed?

Or how to ask this question?

Thanks

[James]

Perhaps, "Are the viscosity and pH checks to be performed on the fluid?"

[Mister Micawber]

James, you don't seem to understand very well what is being asked on the threads you have answered so far. Please take time to consider carefully before you respond in future.

Have the fluid field checks on viscosity and pH been performed?
_________________
Native English teacher at Mister Micawber's

[James]

Thank you Mister. But I don't quite understand how 'the fluid field checks' could be performed on "viscosity and pH". I thought only fluid could have a viscosity and a pH. Maybe I am in the dark but, honestly, the question itself confused me because a fluid field is, in my opinion, a conceptual term in fluid dynamics but not a substance in real life.