PerkinElmer Spectrophotometer

PerkinElmer Spectrophotometer Main Features: 1. Host: Dual beam, dual monochromator, ratio recording, and computer-controlled UV/Visible (and Near Infrared) spectrophotometer. 2. Optical System: The entire optical system employs reflective optical components coated with a SiO2 protective layer, with high line density holographic grating (1440 lines/mm for UV/Visible, 360 lines/mm for Near Infrared); it utilizes an advanced four-zone segmented fan-shaped signal collection chopper, ensuring accurate signals from the sample and reference for each measurement (during the operation of the chopper, the signals from the sample and reference are corrected separately by their respective dark zone signals, with high wavelength accuracy: 0.08nm in the UV/Visible range). Advanced four-zone segmented fan-shaped signal collection chopper: Fan-shaped signal correction technology (CSSC) Data acquisition sequence: Sample/Dark zone/Reference/Dark zone 3. The instrument has a wide standard wavelength range: Lambda 650: 190–900nm Lambda 850: 175–900nm (requires nitrogen purge below 185nm) Lambda 950: 175–3300nm (requires nitrogen purge below 185nm) 4. The instrument has a wide linear range: UV/Visible range: 8 A (Lambda 850/950) 6 A (Lambda 650) (The linear range of the instrument is determined by the amount of stray light; the same amount of stray light determines the same linear range!) This allows users to measure low transmittance and reflectance samples with the required precision. 5. The instrument's standard configuration is powerful: Software-controlled beam blocker ensures no issues with testing small samples; Software-controlled reference and sample beam attenuators allow the instrument to "almost detect the last photon of the sample" (without additional costs or occupying sample chamber space); Signal-to-noise ratio obtainable without smoothing raw data (the sensitivity of the high-performance photomultiplier tube R6872 is four times higher than that of R928).