UV-VIS & NIR Chemical Absorbance Systems 
- 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
StellarNet’s Low Cost UV-VIS Spectrometer system is composed of the BLACK-Comet research grade concave grating spectrometer, a SL5 high stability light source with integrated cuvette holder, and an optical coupling fiber.
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 B
LACK-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.
Lab #1- Quantification of Food Dyes in Sports Drinks
Lab #2 – Spectrophotometric determination of the % cranberry juice in cranberry-apple juice
Lab #3 – Fluorescence of riboflavin in energy drinks
Lab #4 – Exploring Chemical Bonding Using Raman Spectroscopy
Liquid Samples
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.
Coarse Samples
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.
BLACK-Comet & RED-Wave Spectrometer System with Dip probe measuring from 200-2300nm
A SL5 UV+VIS Light Source can be coupled via fiber optic cables (2x F600-UVVIS-SR) to a cuvette holder and then to the BLACK-Comet concave grating spectrometer for 200-1080nm detection.
One of our most popular configurations- SL5-CUV UV-VIS with integrated cuvette holder, F600-UVVIS-SR fiber optic cable, and a BLACK-Comet spectrometer
SpectroChemistry Sample Spectra
SpectraWiz Software displaying a time series increase of NIR water absoprtion bands.
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.
- 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
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.
SpectroChemistry Systems Options and Pricing
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$6,275.00
Spectrometers for Chemistry Applications
BLACK-Comet
Concave Grating spectrometer for UV-VIS. C(190-850nm) or CXR (280-900nm) $3,450.00
BLACK-Comet-SR
Super Range Concave Grating spectrometer for UV-VIS-NIR. C-SR (200-1080nm) or CXR-SR (220-1100nm) $3,950.00
GREEN-Wave
Low cost spectrometer designed for teaching labs $2,250.00
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. $15,500.00
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. $20,500.00
RED-WaveNIRX-512
Extended range NIR spectrometer for 900-2300nm with 512 element cooled PDA $25,000.00
RED-WaveNIRX-1024
Extended range NIR spectrometer for 900-2300nm with 1024 element cooled PDA $32,000.00
Fiber Optic Accessories for Transmission/Absorbance/Fluorescence
CUV1 4-way cuvette Holder with 3 lenses – 1 lens position at 90 deg for fluorescence $525.00
TFX-4 Adjustable pathlength Transmission Fixture with 2 LENS-QCOLS $550.00
DP400-VISNIR Dip Probe for Vis-NIR (UV also available) $2,300.00
F600-VISNIR rmored, 600um diameter single strand, multimode fiber optic cable with black PVC jacket and 2 SMA conectors-2 meter length for wavelength range 400-2200nm. $200.00
F600-UVVIS-SR Armored Solarization Resistant 600um fiber optic cable – 2 meters $225.00
Light Source for Transmission/Absorbance/Fluorescence
SL1-Filter SL1 10,000 hour halogen light source with filter holder nose and filter. Requires UP12V $950.00
SL1-CUV SL1 10,000 hour halogen light source with integrated cuvette holder. Requires UP12V $950.00
SL1-LED Miniature fiber optic light source with replaceable LED. Includes set of 6 LED’s. Requires UP12V $875.00
SL3 Fiber optic deuterium light source with 4,000 hours Requires UP24V $2,050.00
SL5 Deuterium + Tungsten UV/Vis/NIR Lamp Requires UP12V $2,050.00
SL5-CUV Deuterium + Tungsten UV/Vis/NIR Lamp with integrated cuvette holder Requires UP12V $2,450.00
SpectraWiz Software
Free SpectraWiz Software
The powerful SpectraWiz® spectrometer software is provided free of charge with every spectrometer instrument. This includes drivers and customizable software for Windows. The SpectraWiz software is considered the “Swiss Army Knife of Spectroscopy” and may be used to accurately measure wavelength emissions, reflectance, transmission, absorption, concentrations, and absolute intensities. In addition to real-time spectroscopy, SpectraWiz® has built-in applications for SpectroRadiometry, SpectroColorimetry, ChemWiz chemistry lab concentration analyzer, and UV level monitors. Download SpectraWiz Software FREE
ChemWiz App & ChemWiz Application Development Kit (ADK)
- Application panel works with live spectra to allow concentration calibration using single wavelength PLS
Post Processing- Samples and Scores Plot ChemWiz Chemometric Predictor
Episodic Data Capture for Kinetics
- 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
ChemWiz for iPhone and Andriod – Chemical Absorbance App
The ChemWiz App for all WiFi enabled StellarNet spectrometers makes real-time chemical absorbance measurement quick and easy. Acquire full spectrum analysis, create calibration methods, and record calculated concentration data! This intuitive app lets users control their spectrometer from their phone or tablet reducing lab bench clutter and improving overall lab experience. Save spectra, absorbance, and concentration data, export as .ABS text data file, screenshot, and/or PDF report with all parameters listed.
ile, screenshot, and/or PDF report with all parameters listed.
SpectraWiz MobileTM for Linux/RasPi
The SpectraWiz MobileTM for Linux/RasPi is designed to run directly on the SMART-Control spectrometer interfaces or can be packaged for your your requirements. Using the local access point or WiFi you can easily log in and run applications for General Spectroscopy, Radiometry, Colorimetry, and Concentration analysis.
The easy to use applications are written in python and provided free with purchase of a SMART-Control spectrometer upgrade. Source codes can be purchased separately and can be further customized to suite each user’s requirements. OEM customers can add their logos or additional computations and industrial customers can set their spectrometer and stream their data to PLCs or other process monitoring platforms. SMART-Control devices support RS232, 4-20mA Analog, 26 pin digital I/O, Ethernet, I2C and other options available upon request.
Interface Options
Standard Interface
The system includes a high speed plug & play interface using USB-2 connection.
zAP2 WiFi Upgrade
The zAP2 WiFi upgrade enables WiFi access to any spectrometer. Now use our new StellarRAD App on your iPhone or Android device. zAP2 WiFi upgrade can be added to all new and some old spectrometers in the field. Once added, the spectrometer runs as normal receiving power from the computer’s USB; if 5VDC power is connected directly to the BLUE-Wave, the zAP2 WiFi powers up and you can connect your device. Also, the zAP2 enables USB over IP and you can run SpectraWiz wirelessly on your Windows computer. $600.00
SMART-Control Interface Upgrade
The SMART-Control device offers communication flexibility and application specific customization for any StellarNet spectrometer. This add-on interface includes an integrated CPU with 1GB RAM and many communication protocols such as RS232, SPI, 4-20mA Analog for PLCs, Digital I/O, Ethernet, Wifi and many other options. The SMART-Control allows customers to move their spectrometers into process or OEM environments and stream their selected real world data. $2,000.00
Add Near Infrared to your Chemical Analysis
StellarNet Dual-Detector Super Range (DSR) spectrometer systems combine two instru
ments to cover the ultra violet, visible and near infrared portions of the electromagnetic spectrum. The two instruments work as one creating a unified spectral graph over the entire wavelength region, 200-2300nm.
Sample Color and Composition
- Measure sample CIELAB color and quantitative composition simultaneously
- Fast, easy results with little to no sample prep using reflectance fixture.
Technical Information Request
Cooking Oil Spectroscopy for the Perfect Thanksgiving Turkey
Happy Thanksgiving! Every year, we like to analyze popular Thanksgiving foods by using spectroscopy. As we gather around the Thanksgiving table, the spotlight shines on the star of the feast: the perfectly roasted turkey. While the turkey is often center stage, the...