1. Theoretical changes in pressure after changing particle size 2. Ergun Modification of the BlakeKozeny Equation for PressureFlow 3. Pressure conversions starting with psi 4. Pressure conversions starting with bar 5. Pressure conversions starting with kg/cm^{2} 6. Pressure conversions starting with kPa 7. Pressure conversions starting with MPa
1. Theoretical changes in pressure after changing particle size:
Where: ΔP_{1} = Initial pressure (any pressure units) ΔP_{2} = Calculated pressure (same pressure units as P_{1}) dp_{1 } = Initial mean particle size (any units but typically µm) dp_{2} = Mean particle size of new resin (same units at dp_{1})
2. Ergun Modification of the BlakeKozeny Equation for PressureFlow:
Where: ΔP = Change in pressure L = Column Length h = Mobile phase viscosity u = Empty column linear velocity (cm/hr) d_{p}^{2} = Mean particle size e = Interstitial void volume intrinsic to each resin
3. Pressure conversions starting with psi:
To convert to kg/cm^{2} from psi multiply by 0.0703 To convert to bar from psi multiply by 0.0690 To convert to kPa from psi multiply by 6.895 To convert to MPa from psi multiply by 0.00690
4. Pressure conversions starting with bar:
To convert to kg/cm^{2} from bar multiply by 1.0197 To convert to psi from bar multiply by 14.504 To convert to kPa from bar multiply by 100 To convert to MPa from bar multiply by 0.100
5. Pressure conversions starting with kg/cm^{2}:
To convert to psi from kg/cm^{2} multiply by 14.223 To convert to bar from kg/cm^{2} multiply by 0.981 To convert to kPa from kg/cm^{2} multiply by 98.067 To convert to MPa from kg/cm^{2} multiply by 0.0981
6. Pressure conversions starting with kPa:
To convert to kg/cm^{2} from kPa multiply by 0.0102 To convert to bar from kPa multiply by 0.01 To convert to psi from kPa multiply by 0.1450 To convert to MPa from kPa multiply by 0.001
7. Pressure conversions starting with MPa:
To convert to kg/cm^{2} from MPa multiply by 10.197 To convert to bar from MPa multiply by 10 To convert to kPa from MPa multiply by 1000 To convert to psi from MPa multiply by 145.04

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