Quality Spec Pro
Product Specifications
High Performance, Visible and NIR SpectralRange (350 nm to 2500 nm)
Rapid Scan Time (100 ms)
Qualitative and Quantitative Analysis
Absorbance, Transmittance and Reflectance Measurements
Non-destructive Testing, Requires No Sample Preparation
21 CFR Part 11 and USP Compliant
Rugged & Durable
QualitySpec® Pro — the cost-effective benchtop NIR spectrometer for rapid analysis and high-performance quality control screening of all, or most samples, versus mere spot checking. Featuring extended-range InGaAs TurboScanner technology from ASD, coupled with an open architecture design for the ultimate in compatibility with a wide variety of sampling accessories and fiber optic cables. As a post-dispersive system, the QualitySpec® Pro provides for extremely low stray light and high signal-to-noise ratio resulting in superior repeatability of results for better discrimination and quantitative analysis of materials. A fully modular and flexible platform allows the spectrometer to fit into budgetary requirements on a scalable basis. The QualitySpec® Pro is available in any of these configurations:
350-1050 nm
1000-2500 nm
1000-1800 nm
350-1800 nm
1800-2500 nm
350-2500 nm
Other features include:
High sensitivity with TE cooling at -20º C
2 nm sampling interval with a 0.1 second single scan
Industry-standard 905 fiber optic SMA connectors
ASD’s Indico® software with seamless integration to chemometrics packages
Ethernet communications platform, including a TCP/IP scripting kit for compatibility with LabVIEW®
Calibrations established with the QualitySpec® Pro can also be deployed to portable and remote monitoring versions of ASD’s platform.
The QualitySpec® Pro offers superior performance, and fully complies with FDA and USP regulations. Add in excellent applications support from a dedicated team of proven specialists in NIR technology, and the result is the best performance to cost value in the industry. With instruments on every continent, in over 50 countries, and a proven track record in numerous applications, ASD has the technical expertise to get you up and running so you can meet your material analysis and cost-saving goals.
Pre-Dispersive versus Post-Dispersive, what’s the difference?In a pre-dispersive spectrometer, the sample is illuminated with monochromatic light. Light reflected from, or transmitted through, the sample is collected and delivered to the instrument’s detector. Any stray ambient light scattered from the sample is also collected, thus, both the instrument’s monochromatic illumination and all wavelengths of the ambient stray light are delivered to the detector.
In a post-dispersive spectrometer, the sample is illuminated with white light. Light reflected from, or transmitted through, the sample is collected and delivered to the spectrometer where it is first dispersed into it’s component wavelengths and then measured by the instrument’s detector.
Generally two categories of spectrometer performance are affected by Pre versus Post-Dispersive, and in most situations a Post-Dispersive system is advantageous over the Pre-Dispersive system.
Stray light interferenceIn a Pre-dispersive spectrometer the ambient stray light signal can represent a large fraction of the total light signal measured by the detector, thus, it can be a major source of error. While this error can be minimized by completely shielding the sample from all ambient sources of light, this often precludes the use of most reflectance and transmittance fiber optic probes and non-contact measurement heads.
In a Post-Dispersive spectrometer the ambient stray light scattered from the sample is also collected, but with the post-dispersive instrument only ambient stray light of the same wavelength as that being measured by the detector is added to the signal. Thus, the stray light signal represents a much smaller fraction of the total light signal measured by the detector resulting in an increase in instrument baseline stability.
Sampling, or sample presentation flexibilityPost-Dispersive spectrometers provide the greatest amount of sampling, or sample interface flexibility. Post-Dispersive systems allow for non-contact and remote measurements where Pre-Dispersive systems generally have problems with ambient stray light.
