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Enabling better global research outcomes in soil, plant & environmental monitoring.

SpectraPen SP 100

SpectraPen SP 100 is a handheld spectrometer that's ideal as a general-purpose instrument for research labs, agricultural and industrial applications. SP 100 is especially useful for rapid measurements of solar irradiance and monitoring of spectral light quality.

SP 100 works with Li-Ion rechargeable battery and does not require any PC or any other bulky accessory. Instead, wavelength and intensity readings and their spectral lines are instantly displayed on the SpectraPen touch screen display. All recorded data are automatically stored into the device internal memory. The SpectraPen also includes a comprehensive software package including full system control, data acquisition and data processing.

SpectraPen SP 100 is available in two models:
– SpectraPen SP 100-UVIS with wavelength range 340 to 780 nm
– SpectraPen SP 100-NIR with wavelength range 640 to 1050 nm.

See also the enhanced device version SpectraPen LM 500 with calibrations for key irradiance units, like Lux, Lumen, PAR, Watt, etc., as well as Poly-PlantPen RP 400 comprising complete setup for measuring leaf reflectance parameters.


  • Handheld and lightweight with affordable price
  • Programmable via intuitive touch-screen use
  • Wide spectral response range: UV/Vis 340-780 nm; NIR: 640-1050 nm
  • Both lab and field application
  • Battery-powered
  • USB connectivity
  • Specific setups for fluorescence or reflectance (optional)


Two standard versions available:

  • SP 100-UVIS: range 340-780 nm
  • SP 100-NIR: range 640-1050 nm
  • Optional specific setups for fluorescence or reflectance


  • Indoor and outdoor visible light source testing
  • Optical filters and protecting screens spectra measurements
  • Quality of artificial lighting
  • Wavelength (light colour) measurement
  • Reflectance, transmittance, fluorescence, absorption of various samples (external sample holder and light source needed)

SP 100 Measures:

  • Scope – rough spectrum data
  • Absorbance (external sample holder and light source needed)
  • A=log(I0/I), where I0 is reference light intensity and I is measured light intensity
  • Transmittance (external sample holder and light source needed)
  • T= I/I0, where I0 is reference light intensity and I is measured light intensity


Optical Entrance: SMA 905 to 0.22 numerical aperture single-strand optical fibre
Spectral Response Range: SP 100-UVIS: 340 nm – 780 nm
SP 100-NIR: 640 nm – 1050 nm
Spectral Response Half Width: SP 100-UVIS: 9
SP 100-NIR: 8
Spectral Straylight*: -30 dB
Wavelength Reproducibility: +/- 0.5 nm
Integration Time: 5 ms to 10 s
Number of Pixels: 256
Dimension of Pixels: 0.5 x 15.8 mm
Touch Screen: 240 x 320 pixel; 65535 colours
Memory Capacity: 4 MB (up to 4000 measurements)
System Data: 16 bit AD conversion
Dynamic Range: High gain: 1:4300; Low gain: 1:13000
Communication: USB
Dimension: 15 x 7.5 x 4 cm
Weight: 300 g
Case: Splash-proof
Battery: Li-ion; rechargeable via USB port of a PC
Battery Life: 48 hours (continuous operation)
Operating Temperature: 0 to +50°C
Storage Temperature: -20 to +70°C
Warranty: 1 year parts and labour