| BRAND | Hellma |
| Product | 666-F7 |
| Description | [glass filters for checking the photometric accuracy and wavelength accuracy Didymium glass filter F7 nm wavelength: A: 270, 280, 297, 320; 340 W: 329, 472, 512, 681, 875 Art.No. 666f7-323] |
| Internal code | IMP156337 |
| Weight | 1 |
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