Recertification - 666-S002 Glass Filter Set (Hellma Analytics)
Product Code: HELL666S002RE
Recertifying Glass Filter Set (F2, F3, F4) for checking photometric accuracy.
** 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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