/// <summary>Converst PH to water units.</summary>
/// <param name="ph">The ph.</param>
/// <param name="units">The current units.</param>
/// <returns>The converted values</returns>
private static double[] PHWater(double[] ph, Sample.PHSampleUnitsEnum units)
{
if (units == Sample.PHSampleUnitsEnum.Water || ph == null)
{
return(ph);
}
// pH in water = (pH in CaCl X 1.1045) - 0.1375
return(MathUtilities.Subtract_Value(MathUtilities.Multiply_Value(ph, 1.1045), 0.1375));
}
/// <summary>Phes the units set.</summary>
/// <param name="ToUnits">To units.</param>
public void PHUnitsSet(Sample.PHSampleUnitsEnum ToUnits)
{
if (ToUnits != PHUnits)
{
// convert the numbers
if (ToUnits == Sample.PHSampleUnitsEnum.Water)
{
// pH in water = (pH in CaCl X 1.1045) - 0.1375
PH = MathUtilities.Subtract_Value(MathUtilities.Multiply_Value(PH, 1.1045), 0.1375);
}
else
{
// pH in CaCl = (pH in water + 0.1375) / 1.1045
PH = MathUtilities.Divide_Value(MathUtilities.AddValue(PH, 0.1375), 1.1045);
}
PHUnits = ToUnits;
}
}