As far as we're aware, the Firefly FF-WAV-1-UV/VIS is the only Holmium Oxide glass calibration standard that offers the highly-demanded 241.5nm peak for validation of DNA measurements!
The Firefly FF-WAV-1-UV/VIS offers the following NIST-compliant peak values for calibrating the wavelength accuracy of spectrophotometers:
The measured wavlengths' peaks depend, among other factors, on the slit width of the user's spectrophotometer's monochromator (spectral band-pass) Our calibration measurements are performed with a slit-width of 1nm. Other widths are possible, please contact us.
Advantages of Firefly Scientific's solid state calibration standards: