Click on the link to start a calculator:

• Formation factor calculator: Formation Factor
• Calculate pore solution properties from ionic concentrations: Pore solution properties
• Calculate ASTM C1556 parameters (D_a and C_s) using formation factor and Langmuir isotherm parameters: C1556 (L)
• Calculate ASTM C1556 parameters (D_a and C_s) using formation factor and Freundlich isotherm parameters: C1556 (F)

These calculators are provided for educational purposes and without any guarantees.