Recertification - 666-F7A, Didymium filter (Hellma Analytics)
Product Code: HELL666F7ARE
Recertifying Didymium glass filter (0.5-1.0 Abs) for checking wavelength and photometric accuracy. Supplied with DAkkS calibration certificate.
Absorbance at (nm): 270, 280, 297, 320, 340
** Hellma recommends inspection and recalibration of glass filters should be carried out every 12 months for the first 2 years of use, after that every 24 months.
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