Description
Thermo Scientific™ Spectronic™ Spectrophotometer Standards, 840-253100
Features:
- Set of 7 glass pieces mounted in metal frames sized to fit standard square cuvette holders
- Use to check performance and accuracy of your spectrophotometer in your own lab
- Easy to use as standard cuvette
- Each set is individually tested and certifed to be accurate, with values traceable to NIST or other primary standards
Supplied with:
- Calibrated neutral density glass standards at nominal values of 0.3, 0.5, 1.0, and 1.5 angstroms — standards are calibrated at 440.0 nm, 465.0 nm, 590.0 nm, and 635.0 nm
- One calibrated standard for checking wavelength accuracy at nominal wavelenghts on 400 nm, 522 nm, and 777 nm— symmetry of peaks means that tests of wavelength accuracy are independent of spectral bandwidth (between 1 nm and 10 nm) of instrument being tested
- Filter for checking stray light in UV-Vis instruments at 220 nm
- Filter for checking stray light in Vis instruments at 400 nmFilters are supplied in tough plastic storage container
- Recalibration recommended every 2 years and can be provided by Thermo Scientific
Note:
- Stray light filters should block light completely at measurement wavelength and are therefore, not somethiing that can be calibrated