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UV Quartz 20mm Cuvette for Spectrophotometer (2pcs) (Pathlength: 20mm; Volume: 7ml; Spectral Range: 190-2500 nm) home2023 this reactive black lights isUV Quartz 20mm Cuvette for Spectrophotometer (2pcs) (Pathlength: 20mm; Volume: 7ml; Spectral Range: 190 2500 nm) Product Features Features: Optical Windows: 2; Spectral Range: 190 2500 nm; Pathlength: 20mm; Volume: 7 ml; Cover: A Non Sealing PTFE Cover (non sealing); Dimensions: 45x12. 5x22. 5mm Resistant to most acids, bases, or organic solvents; Resistant to heat up to 300C (with PTFE cover) Made of high quality quartz material with far UV spectral