Part Number:DLPNIRNANOEVM
Hi,
we tried to calibrate the device with an commercial spectralon standard using the GUI (under utilities) and it worked for the white (99%), gray (10%, 25%, 50%, 80%) and black (0%) reflection standards.
But if we measure different chemicals now, we get some strange negative absorption values or the whole spectrum is shifted.
Orange: urea (factory calibration), blue: urea (new calibration)
After applying a standard normal variate function, the spectra are quite similiiar.
Orange: urea (factory calibration), blue: urea (new calibration)
