铬酸钾二级标准 UV

Glass filter set for checking spectrophotometers.
Glass filters are optical reference materials made of glass specially manufactured for calibration.
All glass filters measured by Hellma Analytics are traceable to NIST or PTB reference standards.
You can use the glass filters to check the following parameters of your spectrophotometer:

• Wavelength accuracy
• Photometric accuracy (absorbance)
• Photometric linearity in the UV/Vis range