UV/Vis/NIR spectrophotometer (PerkinElmer) (Lambda 950)

The Lambda 650/850/950 UV/Vis/NIR spectrophotometers are double-beam, double-monochromator system ratio-type UV/Vis/NIR spectrophotometers manufactured by PERKINELMER based on years of accumulated advanced experience, representing the highest level of such instruments in the world today.

Optics, coatings, colorimetry, materials, glass, biotechnology, pharmaceuticals, transportation, communications

1. Main unit: A double-beam, double-monochromator, ratio-recording, computer-controlled UV/Visible (/Near-Infrared) spectrophotometer. 2. Optical system: The entire optical system uses reflective optical elements coated with a SiO2 protective layer; the holographic ruled grating has the highest ruling density (1440 lines/mm for UV/Visible, 360 lines/mm for Near-Infrared); the state-of-the-art four-quadrant sector signal-collection chopper ensures the most accurate sample and reference signals each time (during chopper operation, the sample and reference signals are each individually corrected by their respective dark-sector signals, giving the highest wavelength accuracy: 0.08 nm in the UV/Visible region); the state-of-the-art four-quadrant sector signal-collection chopper: i.e., the Sector Signal Correction technique (CSSC); the data acquisition sequence is: sample/dark sector/reference/dark sector. 3. The instrument's standard wavelength range is wide: Lambda 950: 175～3300 nm (below 185 nm requires nitrogen purging). 4. The instrument's linear range is wide: UV/Visible region: 8 A (Lambda 850/950) (the instrument's linear range is determined by the magnitude of the instrument's stray light; the same stray light determines the same linear range!). This allows users to measure low-transmittance and reflective samples at the required and needed accuracy. 5. The instrument's standard configuration is powerful: A software-controlled beam blocker makes testing of small samples absolutely problem-free; software-controlled reference and sample beam attenuators enable the instrument to "measure almost down to the very last photon of the sample" (at no additional cost and without occupying space in the sample compartment); the best signal-to-noise ratio is obtained without smoothing the raw data (the high-performance photomultiplier tube model R6872 is 4 times more sensitive than model R928; 6. Provides a complete product solution: Suitable for samples of various sizes ── large samples are measured using the Universal Optical Bench (GPOB); provides users with technical solutions ── the capability for routine analysis, the concept of Q-COM (Quick Optical Bench Mode changeover) (rapid replacement and installation of various accessories: such as integrating spheres, reflection accessories, universal optical benches...... Universal Optical Bench (GPOB); Q-COM concept (Quick Optical Bench Mode changeover); optional detectors can meet users' special needs for testing scattering and turbid samples ── for difficult-to-measure samples, an integrating-sphere detector can be provided; provides users with software solutions: UV WinLab software is powerful, can provide Expert mode to run the instrument, provides users with optimal instrument parameters (experimental conditions), and can also provide software for special applications such as mathematical operations, colorimetry, architectural glass, protective glass, filters, and databases (Advanced Spectroscopy Software Package ASSP); 7. The widest range of accessories available: Diffuse reflection accessories: 60 mm/150 mm integrating spheres, small-spot double-cone (diffuse reflection) accessory; 150 mm integrating sphere; small-sample testing with diameter 1.5～2 mm (such as gemstones); Collection sphere: 60 mm integrating sphere, usable with specular reflection accessories and for large-angle transmission measurements; Specular reflection accessories: In addition to the commonly used series of fixed-angle and variable-angle absolute/relative specular reflection accessories, the exclusive newly launched: Universal Reflection and Transmission measurement Accessory URA; the world's exclusive capability for multi-angle reflection within an angle range of 8～70 degrees, 185～3200 nm, with a single setup in computer software, automatic control for continuous variable-angle "blank-sample-blank-sample" cycling, enabling absolute and relative specular reflection measurements of materials. Sample size is unlimited! Transmission mode measurements can also be performed. URA's unique hardware and software; Directional relative specular reflection/transmission accessory (capable of high-precision measurement of materials in transmission or reflection mode at positive and negative angles from 1～80 degrees, including a polarizer and two reflection standard mirrors); Absolute directional VW-type specular reflection accessory (capable of high-precision measurement of mirror materials in transmission or reflection mode at positive and negative angles from 8～80 degrees, including laser alignment and a polarizer and two reflection standard mirrors); Double-aperture accessory (can correct the nonlinearity error of the detector, thereby improving the instrument's linear range and photometer accuracy); Polarizer and depolarizer: Universal Optical Bench (GPOB): a pioneering multi-functional sample stage, used for testing large samples or finished products (such as large laser crystals, telescope lenses, camera lenses, automotive glass, etc.); Fiber-optic accessories: large-scale measurement tool for filters and semiconductor wafers; Peristaltic pump sipper; Multi-cell holder; Linear transport and gel (film, filter) scanning accessory (can be optionally equipped with a matching slit adjustment accessory, used to change the size of the sample and reference beams)