- UV-VIS & NIR systems for chemical absorbance measurements 190-2300nm
- Spectrochemistry Systems include a miniature spectrometer, light source, and sampling accessory such as cuvette holders, dip probes, & flow cells
- SpectraWiz Software has built in features for ChemWiz Concentration Analyzer with multivariate chemometric options
- Episodic capture for kinetics, time series analysis, & batch monitoring
- Easily convert to fluorescence or reflectance for multi applications
- Great for Teaching Labs, Research, Process Control & much more!
- Also see details about our Fluorescence and Raman Systems
Spectrometers for Chemistry Applications
StellarNet miniature research grade spectrometers allows for low cost measurements in the UV-VIS-NIR wavelength ranges. These instruments can measure species absorption, emission, fluorescence, transmission, concentration, and color, using the free SpectraWiz® Software Suite. StellarNet Chemical Absorbance Systems reliably measure absorbance and concentrations and have applications in the food & beverage, petrochemical, pharmaceuticals, raw material industries.
The BLACK-Comet series of concave grating spectrometers cover wavelength ranges 190-1100nm in four different configurations. The BLACK-Comet utilizes aberration corrected optics allowing for enhanced UV sensitivity, reduced stray light, uniform resolution, and superb spectral imaging.
The RED-Wave NIR InGaAs series spectrometers cover the near infrared wavelength regions from 900-2300nm with either 512 or 1024 element cooled photodiode arrays. StellarNet’s spectrometers are ruggedized, durable, and the perfect instrument for any lab or field application.
StellarNet UV-VIS-NIR systems covers a 190-2300nm range with fiber optic light sources and accessories. Click on the tabs above for light source and sampling accessory options!
StellarNet Spectroscopy Lab Experiments
Short on time? Check out some of our Spectroscopy Labs provided with each system. Contact our sales team for help configuring a set of spectrometers for your undergraduate or graduate lab courses.
SL5-Cuvette UV-VIS Lamp with Integrated Cuvette
more light sources…
For liquids, samples can be pipetted inside cuvettes and then placed into the CUV1 (4-way fiber optic cuvette holder) used for transmission, absorbance, fluorescence, and color measurements. You may also use the DPH fiber optic dip probe for insitu measurements or our ATR probe for darker colored inks and dyes.
MFC is a mini flow cell with 10mm optical path length with fused silica windows (optional Ultem, Plexiglas, Steel, Teflon or PEEK). Optional 2.5, 5, 10, 20, 50 and 100-mm optical path lengths.
MFFC is a mini fluorescence flow cell that has a fiber optic cable input to send excitation energy through a fused silica window into a
2-mm inner-diameter sample compartment. Emitted energy is collected by a second fiber, oriented at 90°, that connects to a spectrometer configured for fluorescence.
CUV-TEMP is a temperature controlled cuvette holder for fluorescence & absorbance measurements from -30 °C to +105 °C. Includes sample compartment, two imaging lenses, two collimating lenses, two mirror plugs, submersible pump, cover with access cap, tubing, cables and a stir bar.
Solid and Powder Samples
The RPH Reflectance probe is a popular accessory for color measurement. The SL1-Filter Tungsten Halogen lamp with internal Color Equalization Filter (CEQ) is used to illuminate the RPH’s 7 input optical fibers. At the probe tip the 7 optical fibers are bundled around one 600um collection fiber which returns the reflected light to the spectrometer. The RPH probe can be used with the RPH1 Reflectance Probe Holder block that maintains a 45 degree angle and user set distance from sample or the RPH3 is a Reflectance Probe Holder stand for 90° angle measurements. The RS50 white reflectance standard should be used to take your white reference spectrum for all color measurement applications.
The RTIP45 is a black plastic tip has 45 degree angle and slides onto reflectance probe and locks to set position.
An integrating sphere, such as the IC2, can also be used in place of the fiber optic reflectance probe to improve measurement consistency. The IC2 has an illumination port as well as a baffeled collection port.
The RFX-3D Reflectance fixture has integrated light source to enable simple color measurement of solids and powders by placing sample on directly on top. Additionally the RFX-3D has 3 fiber connectors to the spectrometer each positioned 120 degrees in a circle thus eliminating the need to rotate coarse grain samples. Reflectance from 3 positions is combined using special 3-to-1 fiber for spectrometer.
SpectroChemistry Sample Spectra
Introduction into Near-Infrared Spectroscopy
The near-infrared (NIR) region of the spectrum extends from the upper wavelength end of the visible region at about 770nm to about 2500nm (13,000 to 4,000cm-1). StellarNet RED-Wave-NIR and NIRX-SR model spectrometers extend to 2300nm capturing some of the most valuable absorption bands in the near infrared. These bands are overtones or combinations of fundamental stretching vibrational bands. The bonds involved are usually C-H, N-H, and O-H. Because the bands are overtones or combinations their molar absorptivities are low. Quantitative determination of species, such as water, proteins, low molecular weight hydrocarbons, and fats in products of the agriculture, food, petroleum and chemical industries. Both diffuse reflection and transmission measurements are used, although diffuse reflection is by far the most widely used. StellarNet offers TXF transmission fixtures and RFX reflection fixtures to facilitate these measurements.
Quick Facts: BLACK-Comet UV-VIS Spectrometer
- Concave grating optics provides high sensitivity
- Consistent resolution throughout wavelength range (due to flat field created by special concave grating)
- No mirrors for lowest possible stray light
- Extremely rugged with no moving parts
- Shock-proof durability and permanent alignment
- Compact size fits on lab bench, fume hood, dry box, or in your pocket
- Battery pack options for field measurements
- Simple USB2 interface to notebook & desktop PCs
Low Cost NIR Spectroscopy Systems
StellarNet’s newest NIR spectrometer, the DWARF-Star, is small, robust, and equipped with high performance InGaAs detector array for the 900-1700nm wavelength range and achieves resolving resolutions to 1.25nm. The DWARF-Star features no moving parts and is packaged in a small rugged metal enclosure (5”x3”x2”) for portable, process, and OEM applications. Advancements in electronic and optical design have allowed for size reduction never before achieved in a NIR spectrometer.
|Preconfigured UV-VIS Chemical Absorbance System|
|Chem-System||Preconfigured Chemistry system for absorption analysis of liquid samples. System consists of BLACK-Comet-C 25um slit spectrometer, SL5-CUV, F1000-UVVIS-SR-1 fiber optic cable, and SpectraWiz Spectroscopy Software. Buy from Online Store||$5,105|
|Spectrometers for Chemistry Applications|
|BLACK-Comet||Concave Grating spectrometer for UV-VIS. C(190-850nm) or CXR (280-900nm)||$2,950|
|BLACK-Comet-SR||Super Range Concave Grating spectrometer for UV-VIS-NIR. C-SR (200-1080nm) or CXR-SR (220-1100nm)||$3,495|
|GREEN-Wave||Low cost spectrometer designed for teaching labs||$1,948|
|DWARF-Star||Compact NIR spectrometer with miniature size (5″x2″x3″) and extremely robust design with 512 element PDA, range 900-1700nm, 2.5nm resolution with 25um slit, 16-bit digitizer, high speed USB-2.||$13,125|
|DWARF-Star-1024||Compact fiber optic spectrometer with miniature size (5″x2″x3″) and extremely robust design with 1024 element InGaAs PDA, range 900-1700nm, 1.25nm resolution with 25um slit, 16-bit digitizer, high speed USB-2.||$17,695|
|RED-WaveNIRX-512||Extended range NIR spectrometer for 900-2300nm with 512 element cooled PDA||$18,995|
|RED-WaveNIRX-1024||Extended range NIR spectrometer for 900-2300nm with 1024 element cooled PDA||$25,995|
|Fiber Optic Accessories for Transmission/Absorbance/Fluorescence|
|CUV1||4-way cuvette Holder with 3 lenses – 1 lens position at 90 deg for fluorescence||$595|
|TFX-3||Adjustable pathlength Transmission Fixture with 2 LENS-QCOLS||$495|
|DP400-VISNIR||Dip Probe for Vis-NIR (for UV-Vis-SR add $100)||$1825|
|F600-VISNIR||Armored 2 meter fiber optic cable attaches Receptor to SpectroRadiometer||$160|
|F600-UVVIS-SR||Armored Solarization Resistant 600um fiber optic cable – 2 meters||$195|
|SL1-Filter||SL1 10,000 hour halogen light source with filter holder nose and filter.||$595|
|SL1-CUV||SL1 10,000 hour halogen light source with integrated cuvette holder||$655|
|SL1-LED||Miniature fiber optic light source with replaceable LED. Includes set of 6 LED’s||$695|
|SL3||Fiber optic deuterium light source with 4,000 hour Hamamatsu L2D2 bulb||$1745|
|SL5||Deuterium + Tungsten UV/Vis/NIR Lamp||$1695|
|SL5-CUV||Deuterium + Tungsten UV/Vis/NIR Lamp with integrated cuvette holder||$1945|
ChemWiz App & ChemWiz Application Development Kit (ADK)
- Application panel works with live spectra to allow concentration calibration using single wavelength PLS
- Load previously developed PLS chemical calibrations for concentration display of unknown samples
- Episodic capture for kinetics and time series analysis
- Performs single wavelength linear PLS calibrations
- Ideal for in-line batch and on-line process monitoring
For more information about the FREE SpectraWiz Software Suite and all our other customizable full source codes and programs click on the picture links below!
Technical Information Request
Polarized Emission from Conjugated Polymer Chains Aligned by Epitaxial Growth during Off-Center Spin-Coating
T Anzai, W Porzio, V Vohraa Due to their macromolecular nature, conjugated polymers can be relatively easily aligned by applying a variety of processes resulting in either elongation or ordering of their conjugated backbones. Processes that induce chain alignment...read more