B&W Tek i-Spec® 17/17B/22 Portable Broadband Transmittance / Reflectance / Absorption Spectrometers

B&W Tek i-Spec® 17/17B/22 Portable Broadband Transmittance / Reflectance / Absorption Spectrometers

  • Portable, lightweight, rugged, turnkey design
  • Flexible fiber coupling of sampling accessories
  • USB 2.0 connectivity for simple computer operation
  • Battery Option Available



The i-Spec® series is a group of portable broadband fiber-optic coupled spectrometer systems for field, laboratory, and at-line use. The spectrometers cover 350 – 2200 nm and employ CCD, Si Array, InGaAs array, and/or extended InGaAs array detectors for optimal sensitivity and dynamic range in the Vis and NIR range. The i-Spec features a standard external triggering port with flexible fiber optic coupling of reflectance/transmittance fiber optic probes (standard) or other sampling accessories. Optimal transmittance or reflectance measurements are taken using long-lifetime 5 or 20 watt tungsten halogen sources. High speed detection systems enable fast spectral capturing of 20 to >100 spectra per second, making the i-Spec ideal for studies where high- speed spectrum capture rates are essential.

The system includes a fiber optic probe for easy diffuse reflectance and transmittance measurements of solids, liquids, gels and slurries. The iSpec 4 software provides an easy user interface to control and optimize measurements with each of the system’s spectrometers.


  • Chemical analysis of clear liquids, opaque liquids, and gels
  • Diffuse reflectance material property measurements of solids
  • Measurement of moisture, fat, and protein in feed & forage
  • Chemical analysis of foods
  • Quantitative analysis of textiles and fibers
  • Composition of food and pharmaceutical formulations
  • OEM building blocks for PAT instrumentation.


Measurements Transmittance, Reflectance, Absorbance with included fiber optic probes
Connections Illumination and Collection SMA905 Ports for Fiber Optic Coupling
Triggering Front Panel Connection for Use With Sampling Probes with Triggering Feature
Computer Interface USB 2.0/1.1
Software iSpec®4
Software Options Software Developer’s Kit (SDK)
Sample Code: C#, C++, Visual C++, Visual Basic, VBA, Labview, VB.NET
Instrument Dimensions 9.5 (H) x 6.7 (W) x 13.7 (D) in (242 x 170 x 347 mm)
Weight (model dependant) 7.9 – 10.8lbs, 3.6 – 4.9kg
Power Adaptor 12V DC @ 10.8 Amps, Battery Option Available
Operating Temperature 0°C to 45°C
Optical Design Crossed Czerny-Turner Spectrographs
Digitization Resolution 16-bit or 65,535 to 1
Minimum Integration Time 200μs / 250μs
Light Source Tungsten Halogen 5W Tungsten Halogen 20W
Spectral Output Range 350 to > 2200nm 350 to > 2200nm
Color Temperature 2800 K 2900 K
Warm Up Time ~40 Minutes ~40 Minutes
Rated Life 10,000 Hours 2,000 Hours.

Light Source Application Optimization:

Ordering Guidelines:

Download Data Sheet