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Unwanted light reaching the detector at wavelengths other than the selected wavelength. Low stray light is critical for accurate measurements at high absorbance values. Alpha: <0.05% at 220 nm; POP: <0.05% at 220 nm and 340 nm.

A measurement mode that acquires full absorbance spectra across a user-defined wavelength range. Supports peak/valley detection, repeat measurements, and section zoom. Available in Alpha, POP, NanoQ Plus, and MRX Series.

A measure of how well a sunscreen protects skin from UV radiation. Determined using UV-Vis spectrophotometry by measuring the transmission of UV light through a sunscreen film. Supported by Alpha, POP, and NanoQ application notes.

The ratio of signal intensity to background noise. Higher SNR indicates better measurement quality. MRX N1 achieves an SNR of 100,000:1 at 60 seconds measurement time, enabling highly accurate NIR quantification.

A spectrophotometer that uses a single light path alternately through sample and reference. Simpler and more cost-effective than double-beam systems. Used in POP Series, optimized for routine analysis and educational applications.

A semiconductor-based detector sensitive to light across the UV-Vis wavelength range (190–1100 nm). Used as the primary detector in Alpha, POP, and ProTecUV instruments for accurate light intensity measurement.

The rate at which a spectrophotometer scans wavelengths during spectrum acquisition. Alpha: up to 6,000 nm/min; POP: up to 4,000 nm/min. Higher scanning speeds enable faster spectrum acquisition for high-throughput workflows.

K LAB’s proprietary NanoQ technology that forms an ultra-thin, uniform liquid film between two quartz surfaces for precise microvolume measurement. Creates a stable sample column that minimizes environmental factors and sample variability.