We often get the question:
How can I be sure to get the correct Hazen color value if calibration standards only go up to 500 PCU and my solution’s color is well above that?
Well, absorbance is a function of concentration and thus correlates to color, according to Beer Lamberts law:
Absorbance ≃ concentration
As it may, the native unit of the Kemtrak Platinum Cobalt analyzer IS Absorbance.
This means that the calibration curves for the Hazen color scale are linear.
Thus, you can extrapolate the color and measure well above 500 PCU
So, be my guest
Measure up to 2000 PCU
Or 8000 PCU Hazen if you wish
Kemtrak got you covered.
Kemtrak, the leader in LED-based photometry