Request InfoSpectral Evolution Inc.The standard contact probe from Spectral Evolution is designed for mineral identification and soil analysis. The lightweight and comfortable probe measures surface reflectance from 350 to 2500 nm. A high-intensity bulb provides a focused and more intense light source for contact measurements. The probe provides improved signal-to-noise ratio for measurements in critical areas of the spectrum. A 10-mm spot size and a scratch-resistant crystal and rubber gasket protect the probe window for clear and accurate measurement. The compact probe works with the oreXpress, SR-6500, and...See full productRelated content from Photonics MediaPRODUCTSPhotonics Spectra September 2022 IssueLight-Dependent Resistor PhotocellsCadmium Sulfide (CdS) Light-Dependent Resistors (LDRs) from Advanced Photonix Inc. are designed for visible light measurement from 400 to 700 nm. 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