Uv nir spectrometer

Introduction

A UV NIR spectrometer is an analytical instrument used to measure the spectrum of the samples over the ultraviolet (UV) and the near-infrared (NIR) wavelength regions, and it is used in the chemistry, the materials science, the food, the pharmaceutical, and the many other industries for the analysis of the samples. The UV NIR spectrometer measures the absorption, the reflectance, or the transmittance of the light by the sample over the wavelength range, typically from about 200 nanometers in the UV region to about 2500 nanometers in the NIR region, and the spectrum provides the information about the electronic transitions in the UV and the visible regions and the vibrational overtones in the NIR region, which are related to the composition and the properties of the sample; the UV NIR spectrometer consists of a light source, a monochromator or another wavelength selection device, a sample holder or a probe, a detector, and a control and a data analysis system, and it provides features such as the wavelength scanning, the high resolution, and the data analysis; the UV NIR spectrometer is used for the analysis of the organic and the inorganic compounds, for the measurement of the moisture and the components in the food and the agricultural products, for the quality control, for the process monitoring, for the research, and for many other applications; the UV NIR spectrometer is an essential instrument for the spectral analysis. UV NIR spectrometers are used in the chemistry and the materials science, in the food and the agriculture industry, in the pharmaceutical industry, and for many other applications. With their wide wavelength range, UV NIR spectrometers are essential for the comprehensive spectral analysis.

UV-NIR Spectrometer LUVP-T2011

UV- Spectrometer offers wide spectral measurements with a range of 200 to 850 nm or 400 to 1100 nm. It incorporates a linear array detector that delivers high quantum efficiency and depe...

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UV-NIR Spectrometer LUVP-T2010

UV- Spectrometer offers full-spectrum detection across a wide range of 180 to 1100 nm. It is equipped with advanced an SMA905 optical fiber interface and supports 2.0 connectivity for ef...

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Standards

European Pharmacopoeia 2.2.25-Spectrophotometry, ultraviolet and visible

ASTM E275-08(2022)-Standard Practice for Describing and Measuring Performance of Ultraviolet, Visible, and Near-Infrared Spectrophotometers

Complies with the above standards, but is not limited to them.

Features

1. UV-Near infrared (UV-NIR) spectrometer for spectral measurement across 190-2500 nm range.

2. Extended range from deep UV through visible to near infrared for comprehensive material characterization.

3. Suitable for chemical, pharmaceutical, semiconductor, materials, food, agricultural and research labs.

4. Includes deuterium and tungsten-halogen lamps, monochromator, Si+InGaAs detectors, software and manual.

5. Supports UV-NIR spectral analysis for composition measurement, material identification and quality control.

FAQ

Q1: What testing scenarios is this spectrometer mainly applied to?

A: The UV-NIR spectrometer is used in chemical analysis, pharmaceutical, semiconductor, materials science, food and agriculture, environmental, industrial, and research to measure absorption, transmission, or reflection spectra across the ultraviolet (190-380 nm), visible (380-780 nm), and near infrared (780-2500 nm) ranges for compositional analysis, material characterization, and quality control. It supports semiconductor (wafer inspection, thin film thickness, anti-reflective coatings, photoresist analysis), pharmaceutical (raw material ID, polymorphism, content uniformity, blend uniformity), chemical (polymer characterization, chemical composition, reaction monitoring), food/agriculture (grain protein/moisture/oil, fruit quality, meat composition), and materials (coatings, films, glasses, ceramics analysis).

Q2: What standards does the spectrometer comply with?

A: The UV-NIR spectrometer follows relevant ISO, ASTM, USP and GB/T standards including ASTM E131 (wavelength calibration), ASTM E1655 (NIR multivariate calibration), USP <857> (UV-Vis spectrophotometry), USP <197> (near infrared spectroscopy), ISO 12099 (NIR for animal feed), and GB/T standards for UV-NIR analysis. The hardware complies with IEC 61010 safety standards and EMC standards. Calibration should use certified wavelength standards (holmium oxide for UV-Vis, rare earth glass (didymium, holmium oxide) for NIR) and NIST-traceable reflectance/absorbance standards. For NIR quantitative work, multivariate calibration models (PLS/PCR) should be validated per ASTM E1655.

Q3: What is the warranty period for the whole spectrometer and key components?

A: The whole UV-NIR spectrometer is covered by a 12-month warranty. The deuterium lamp, tungsten-halogen lamp, monochromator, dual detector (silicon for UV-Vis, InGaAs for NIR), sample compartment, controller, software and housing are covered, while lamps (deuterium ~1000 hours, tungsten ~2000 hours), cuvettes (quartz for UV-Vis, quartz/IR-grade for NIR), calibration standards, desiccant (for InGaAs cooling if applicable) and fuses are consumables or accessories. Damage from improper use, lamp failure, optical contamination or unauthorized repair is excluded. Extended warranty may be available.

Q4: Is this device difficult to operate? Is professional training required?

A: Operation requires trained personnel familiar with UV-NIR spectroscopy and multivariate calibration. We provide operation manuals and training. Proper instrument setup (warm-up 15-30 minutes, wavelength calibration (UV-Vis and NIR ranges), reference/blank measurement), sample preparation (homogenization, temperature equilibration, proper sample presentation), measurement parameters (spectral range, resolution, scans to average, detector switchover wavelength (typically 850-1100 nm between Si and InGaAs - verify smooth transition)), calibration model application (PLS/PCR prediction for NIR quantitative work), and maintenance (lamp replacement, detector cooling, desiccant change) are important for accurate results.

Q5: What is the typical lead-time for order delivery?

A: Standard models require 7-30 working days. In-stock units can ship within 3-7 working days. Custom configurations or large built-to-order systems may require additional time, and we confirm the exact schedule before order confirmation.

Q6: Is regular calibration required? What is the recommended calibration cycle?

A: Wavelength calibration recommended every 3-6 months using certified standards (holmium oxide for UV-Vis (241.7, 287.7, 361.5, 418.6, 453.9, 485.3, 536.4, 637.5 nm), rare earth glass for NIR (didymium: 807, 878, 1065 nm; holmium oxide: 1128, 1380, 1670, 1940 nm)). Photometric/intensity calibration every 6-12 months using NIST-traceable standards. Routine reference/white tile verification before each use. Full spectrometer performance verification annually (including detector switchover smoothness). NIR calibration models should be monitored for drift and updated as needed (per ASTM E1655).

Q7: Are supporting consumables universal?

A: Lamps (deuterium D2, tungsten-halogen - specific to spectrometer model), cuvettes (quartz for UV-Vis, quartz or IR-grade (fused silica, CaF2, sapphire) for NIR - 1 cm standard, matched sets), calibration standards (holmium oxide glass, rare earth glass, NIST-traceable white tile, neutral density filters), sample holders (cuvette holder, integrating sphere, fiber optic probe, rotating sample cup, sipper, auto-sampler), desiccant (for detector cooling), printer and fuses are available from laboratory suppliers, though lamps and some accessories may be spectrometer-specific. Long-term consumable cost includes lamp replacement (deuterium lamps are expensive) and cuvettes (NIR-compatible cuvettes can be expensive).

Q8: Can I customize parameters or supporting accessories?

A: Customization includes spectral range (190-1100 nm UV-Vis only, 190-1700 nm, 190-2500 nm, extend to 3300 nm with extended InGaAs or PbS detector), resolution (0.1-10 nm), detector type (silicon photodiode/CCD for UV-Vis, InGaAs (standard 800-1700 nm, extended 800-2500/3300 nm) for NIR, PbS for NIR (lower cost, lower sensitivity)), instrument type (scanning monochromator, diode array (UV-Vis) + scanning (NIR), FT-NIR (Fourier transform - different technology, faster, higher resolution in NIR)), sample interface (integrating sphere (for diffuse reflectance of powders/solids), fiber optic probe (for in-line/at-line), transmission cell (for liquids), rotating sample cup (for powders), sipper, auto-sampler, Peltier temperature controller, micro-volume adapter), light source (deuterium-tungsten (UV-Vis-NIR), add NIR source (quartz tungsten-halogen) for extended NIR), software (basic spectrum acquisition, quantitative analysis (PLS/PCR for NIR), qualitative identification (library search), data export, SDK, 21 CFR Part 11), language and accessories. Additional accessories can be ordered separately.

Q9: Does the purchase include on-site installation and commissioning service?

A: Standard delivery includes the spectrometer, lamps, basic sample holder, software and instruction manual. On-site installation, calibration, training and NIR calibration model development are not included for standard orders but can be arranged at additional cost (recommended for quantitative NIR applications requiring custom calibration models). Remote guidance is provided.

Q10: What types of samples are compatible with this equipment?

A: The UV-NIR spectrometer measures spectra of various samples including solids (powders (grains, flour, soil, chemicals, pharmaceuticals, food ingredients), granules, pellets, tablets, fibers, textiles, paper, coatings, thin films, polymers, glasses, ceramics, semiconductors (wafers, thin films)), liquids (solutions, suspensions, emulsions, oils, beverages, chemical solutions, solvents), pastes and semi-solids (creams, gels, pastes, butter, cheese), and gases (in gas cells with appropriate windows) within the spectral range (190-2500 nm), photometric range, and sample holder specification. UV-NIR combined range is particularly useful for: (1) Semiconductor and thin film analysis (UV-Vis for band gap, absorption edge, film thickness (interference fringes); NIR for anti-reflective coatings, photoresist, wafer inspection); (2) Pharmaceutical (UV for API identification/assay (aromatic compounds, conjugated systems); NIR for raw material ID, polymorphism, content uniformity, blend uniformity, moisture (water O-H combination band at ~1940 nm), residual solvent); (3) Food/agriculture (UV for vitamins, color, preservatives; NIR for protein (N-H combination ~2180 nm), moisture (O-H ~1940 nm), fat/oil (C-H first overtones ~1700-1800 nm, combination ~2300-2400 nm), starch/sugar (C-H, O-H)); (4) Polymers/chemicals (UV for additives (UV absorbers, antioxidants), aromatic content; NIR for polymer identification (C-H overtones/combinations are specific to polymer type: PE, PP, PET, PVC, PS, nylon), copolymer composition, crystallinity, density, additives); (5) Materials (UV-Vis for optical properties (transmittance, absorbance, color, band gap); NIR for moisture, composition, coating analysis). Key considerations: Detector switchover (most UV-NIR spectrometers use two detectors: silicon (190-1100 nm) and InGaAs (800-2500 nm); there is an overlap region (800-1100 nm) where both detectors measure; verify smooth transition at switchover wavelength (typically 850-950 nm); discontinuity at switchover indicates calibration or detector issue; some instruments use a single InGaAs detector for 190-2500 nm (less common, lower UV sensitivity) or PbS for NIR (lower cost, lower sensitivity, slower). NIR quantitative analysis requires multivariate calibration (PLS/PCR) because NIR spectra consist of broad, overlapping overtones and combination bands (not discrete peaks like UV-Vis or mid-IR); univariate (single wavelength) analysis is generally not sufficient for NIR; calibration model development requires a representative calibration set (50-200+ samples) with reference values (from primary methods: Kjeldahl for protein, Karl Fischer for moisture, Soxhlet for fat), model development (PLS/PCR, wavelength selection, preprocessing (SNV, MSC, first/second derivative)), and validation (independent validation set, cross-validation; per ASTM E1655); models must be maintained (monitor for drift due to sample variation, instrument changes, new sample types; update/recalibrate as needed). UV measurements require quartz cuvettes and UV-transparent solvents (as noted in UV spectrometer entry). NIR measurements: sample presentation is critical (powders: use rotating cup to average particle size and inhomogeneity; liquids: use transmission cell (pathlength 1-10 mm - NIR absorption of water is very strong, so shorter pathlength (1 mm) for aqueous samples, longer (5-10 mm) for organic liquids; solids: integrating sphere for diffuse reflectance, fiber probe for at-line/in-line; temperature control (NIR spectra of water are highly temperature-dependent (O-H bands shift and change intensity with temperature); control sample temperature (+/- 1 degree C) for quantitative work).