Model 6400/5 Photometrics Mode

% Transmittance between 0 and 199.9%T (at 0.1%T resolution)

Absorbance between -0.300 and 3.000A (at 0.001A resolution)

Concentration between -300 and 9999Conc (resolution dependant) (at either 0.001, 0.01, 0.1, or 1 resolution)

This operating mode is the basic measurement mode that can simultaneously display a transmittance, absorbance or concentration value at a single wavelength. The concentration value is calculated by multiplying the measured absorbance by a factor plus a user entered offset. The wavelength is easily adjusted - either by nudging with the arrow keys or by entering a direct wavelength using the numeric keypad.

100% Transmittance (zero absorbance) and dark level are calibrated by a single user operation when measuring transmittance or absorbance. Concentration can be calibrated to a user defined value by calculating the factor from a measured absorbance (offset automatically set to zero), or by direct user entry of the factor and offset.

The in-built printer (if fitted) can be used to create a hard-copy of data for later use.