| BRAND | Hellma |
| Product | 666S006 |
| Internal code | IMP2522313 |
| Weight | 0.02 |
| Technical specification | Neutral glass filter set to verify photometric accuracy consisting of: F0, F2, F3, F4; a reference filter (F0) and 3 neutral glass filters (F2, F3, F4) with absorptions: 0.25/0.5/1.0, certified at wavelengths 440, 465, 546.1, 590, 635 nm, in high-quality storage box with DAkkS calibration certificates |
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