Model 412 Benchtop NIR for Development

The Guided Wave Lab 412 Benchtop Fiber Optic Spectrophotometer offers multi-channel visible or near-infrared (NIR) scanning and analysis for at-line applications, QC method development, and routine laboratory analyses. This spectrophotometer contains the carefully engineered components used in the 412 Process Analyzer, offering unprecedented stability and signal-to-noise ratio providing the basis for long-term, high-precision measurements. The Lab 412 provides one or three channel dual-beam operation and Guided Wave’s no moving optics or fiber multiplexing, plus built-in diagnostics. Process chemists, engineers, and researchers will appreciate the Lab 412's compact & transportable package and ability to monitor multiple reactions or samples with high accuracy and reliability.

Complete Analyzer System

The Benchtop 412 is the heart of a complete analyzer system that includes the spectrophotometer, one or more probes, fiber optic cables, intelligent scanning-and-analysis software, all carefully produced and integrated by Guided Wave engineers. The Benchtop 412 uses optical fibers to collect spectral data from liquids, gases, slurries, and polymer-based melts or films. Spectral data are interpreted by the analyzer system's software, to determine the composition and/or physical characteristics of the material. Results from the Benchtop 412 are easily transferred to a 412 Process Analyzer for permanent process improvement programs through on-line analysis and control.

Research Grade Signal-to-Noise Ratio

The Benchtop 412's patented dual-beam design, coupled with its high output scanning grating, puts more light in the fiber; providing the highest available signal-to-noise ratio. Every Benchtop 412 also provides excellent wavelength accuracy (NIST traceable) and superb wavelength repeatability. Here are a few of the many applications for which our customers rely:

Moisture Content, Solvent Ratios, Reactor Charges
Polymer Analysis, Reaction Endpoint, Copolymer Ratio
Polymer Melt Monitoring Including Reaction Extrusion
Distillation: Bottoms & Overheads, Production LC Makeup
Process Research & Development: R&D Size To PDU Level
Quality Control Method Development

Real-Time Measurement

In fiber optic spectroscopy, the spectrophotometer transmits radiation to one or more probes installed directly in your research reactor, sample system, tubing or even a test tube in a fume hood. Readings are made at any time, providing real-time information. The Guided Wave Benchtop 412 utilizes Guided Wave's single-strand fiber optic cable and GW’s probes, flow cells, or cuvet holders. GW’s optical cable contains a high-efficiency glass fiber and a patented attenuation layer to eliminated internal and external stray light. GW’s probes offer high optical efficiencies and rugged designs.

Flexible Design for In-Situ Research or Pilot Plant Diagnostic Studies

The Benctop 412 is suitable for dip probes, static samples in a cell or in-situ dynamic analyses of processes in laboratory or pilot plant reactors, tanks, transfer tubing or even research extruders. Three versions of the Benchtop 412 are available. The Visible version operates from 380 nm to 1070 nm and uses a silicon detector (Si). The NIR version uses an Indium-Gallium-Arsenide (InGaAs) detector and operates from 800 nm to 1700 nm. The extended, or xNIR, version uses an extended-range InGaAs detector and operates from 1000 nm to 2100 nm.

Features

Excellent Signal-to-Noise Ratio – detects small chemical differences.
Cost effective Multi-channel Design – reduces costs per measurement point.
Stabile Dual Beam Optics – eliminates common sources of drift such as detector and lamp temperature drift and atmospheric water vapor; reduces the frequency of referencing.
Excellent Wavelength Stability – accurate results over long time periods.
Small footprint – requires less bench space.
Single Strand Fiber – less expensive and more flexible.
Remote measurements – fiber optic probes can be used in explosive areas.

True Multiplexing

The Benctop 412 features Guided Wave's patented, integrated solid state multiplexer. No moving optical components or fibers are used. A bank of electromagnetic optical shutters is used to switch from one fiber channel to the next; thus ensuring reliable, accurate, noise free measurements over long time periods. This multiplexer permits the Benchtop 412 to monitor up to three probes, allowing simultaneous data collection from parallel experiments, and reducing the cost per measurement point.

Wide Range of Probes and Cells

Please see our probe section and HeaterCell accessory. HeaterCell is very useful for laborotory studies. It

melts samples that are solid at room temperature
allows you to analyze the effect of sample temperature on your calibration models

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