Material Wise Different Range assignment to one MIC

Dear Experts,

I want to use only one MIC for different material

example : MIC = ph

Chemical : SODA ASH

ACITIC ACID

CARBON DIOXIDE

1. For SODA ASH - pH range will be 5-10

2. For ACITIC ACID - pH range will be 7-11

3. For CARBON DIOXIDE - pH range will be 1-3

so how we can assign different range with one mic

Please help to me to overcome from this problem

Dharmesh Soni