Continued on next page 984 Cuvettes, NMR Tubes, Accessories webcode WWQED019 Cuvette Racks, BRAND Cuvette stands, PP Gray, holds 16 cuvettes, numbered positions. L×W×H: 210 × 70 × 38 mm. Autoclavable (121°C) Article Order No. Cuvette rack, PP 29 49 75950 webcode WWPEV016 Quartz Microplates, Hellma® Quartz glass microplates with 96 wells Outside dimensions 14.5 × 127 × 85.5 mm, bottom synthetic quartz glass 2 mm, well diameter 6.6 mm, well depth 12.5 mm, well volume 300 µl Type Material Order No. 730.009-QG Quartz glass 19 55 22730 Calibration Standards webcode WWPEV008 1 Secondary Calibration Standards for Spectrophotometers, Hellma® Certified UV/Vis calibration standards for spectrophotometers To supply accurate results over the long run, spectrophotometers need to be calibrated in regular intervals. To this end, the Hellma Analytics calibration lab certified pursuant to DIN EN ISO 17025 offers ready-to-use, DAkkS certified calibration standards. Using UV/ Vis calibration standards from the accredited Hellma calibration lab guarantees that the calibration operations performed are traceable to the NIST (National Institute of Standards and Technology) primary standards and the standards of the major pharmacopoeias (EP, DAB, USP). The certified Hellma Analytics reference materials provide the user with a clean, easy, and efficient solution for checking the spectrophotometer. Outside dimensions (H×W×D): 48 mm × 12.5 mm × 12.5 mm 1Glass filters sets for inspection of the spectrophotometers in respect of wavelength accuracy and photometrical accuracy Type Complete filter set consisting of Wavelength nm Order No. 666S000 Holmium oxide glass filter 666-F1 Neutral density filter 666-F2, 0.25 abs. Neutral density filter 666-F3, 0.5 abs. Neutral density filter 666-F4, 1.0 abs. Filter holder F0, empty as reference 279, 361, 453, 536, 638 440; 465; 546,1; 590; 635 440; 465; 546,1; 590; 635 440; 465; 546,1; 590; 635 10 55 16660 666S001 Neutral density filter 666-F3, 0.5 abs. Neutral density filter 666-F4, 1.0 abs. Didymium glass fliter 666-F7, 0.5–1.0 abs. 440; 465; 546,1; 590; 635 440; 465; 546,1; 590; 635 Wavelength accuracy: 329, 472, 512, 681, 875 Photometrical accuracy: 270, 280, 297, 320, 340 10 55 16663 666S002 Neutral density filters 666-F2/-F3/-F4 440; 465; 546,1; 590; 635 10 55 16662 Optical Investigations Spectroscopy
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