The sensitivity and large dynamic range of the Ocean Insight QE Pro combine to make it the highest-performance miniature spectrometer in its class. Absorption, reflectance, fluorescence and Raman measurements all benefit from the superior performance of the QE Pro.

For advanced measurements, a 15,000 spectra buffer ensures data integrity at high collection rates and an advanced optical design and thermoelectric cooler combine to provide thermal stability over long-term measurements. Whether for high speed or wide concentration range measurements, the QE Pro brings exceptional performance to your lab or process application. 

Summary of QE Pro Features and Benefits

The QE Pro is a high sensitivity spectrometer with low stray light performance. It is ideal for a wide range of low light level applications such as fluorescence, DNA sequencing and Raman analysis.

The QE Pro is available in two different ways: custom configured and preconfigured.

At a Glance:

  • Wavelength range: Configurations support the range of 185 – 1100 nm
  • User interchangeable entrance slits
  • Optical resolution: 0.14 - 7.7 nm (FWHM) depending on configuration
  • Internal shutter (optional) for effective management of dark measurements
  • System SNR: 1000:1
  • A/D resolution: 18 bit
  • Dynamic range: 85,000 (typical)
  • Stray light: <0.08% at 600 nm; 0.4% at 435 nm
  • Buffering: 15,000 spectra
  • TEC: Cooling to -40 ºC below ambient -40 ºC to +50 ºC temperature limits

Wide Dynamic Range

Low-noise electronics and an 18 bit A/D converter double the QE Pro’s dynamic range and increase its sensitivity by a factor of two compared with typical back-thinned CCD array miniature spectrometers. These enhancements provide lower limits of detection for both absorption and fluorescence measurements and enable measurements over a wider concentration range.

Buffering for Fast Measurements

To support fast, full-spectrum data acquisition, the onboard buffer stores up to 15,000 spectra. This maintains data integrity by buffering time-stamped spectra for USB communications. Buffering enables full-spectrum kinetics measurements to be performed every 8 milliseconds or 125 measurements per second.

The high-sensitivity QE Pro is a good option for measuring the Raman shift of aromatic hydrocarbons such as toluene.

Reliable Performance

Thermoelectric cooling (TEC) precisely controls the temperature of the detector. Cooling the detector dramatically reduces the effects of thermal noise and improves overall the stability of the detector for lengthy measurements. The TEC in the QE Pro holds data stability to 4 dark counts over a 60 °C ambient temperature range, giving you the highest quality data. This stability performance makes the QE Pro ideal for demanding online and at-line quality control measurements susceptible to temperature changes.

Kinematic mounts are used to position the optical elements of the QE Pro to increase accuracy and reliability. New RS-232 communication protocols allow the QE Pro firmware to be updated in the field, ensuring you have the most up-to-date product.

Custom Configured QE Pro Spectrometers

If you want a QE Pro custom configured spectrometer, we work with you to design the optimum configuration for your measurement. We will help you with selecting the grating and optical bench options. Even more, our modular approach allows you to combine QE Pro with lasers, probes and sample holders for 532 nm or 785 nm Raman analysis.

Advantages of the QE Pro

  • Replaceable slit design for measurement flexibility
  • Buffering full spectrum kinetics measurements
  • Higher sensitivity
  • Thermal stability
  • High quantum efficiency detector
  • TE-cooled detector
  • Internal shutter (optional)

 For more information, view:

Preconfigured QE Pro Series Spectrometer Models at a Glance

Our QE Pro preconfigured spectrometers are optimized around specific applications.

Best for

Absorbance QE Pro-ABS

Fluorescence QE Pro-FL

Raman (785nm) QE Pro-Raman