Sensors for air , water, soil quality

Hello. I am looking at options for sensors for

1.water quality
2.soil quality,
3. air quality

they can be for several parameters or just one.
I am looking for something that is

1. good to build a Minimum Viable Product
2. professional,industrial standard

Should work well with microcontrollers such as Adrduino's, otherwise you are free to give your feedbacks/opinions ( for example you might find some other microcontrollers other than Adrduino better suited for such sensors )

Also who manufactures them ? Which country ?

If you guys have experience in ordering in bulk ? - lesser price per unit ?

Thanks

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