SpectraAlyzer GRAIN

SKU: SA Grain
Supplier: Zeutec (view all products)

It is suitable for the compositional analysis of a wide variety of food products like grains, cereals, oil seeds and flour. All possible grain quality check parameters for e.g. grain products, such as protein, moisture, oil, ash, hardness and water absorption can be analyzed simultaneously. The sample is top filled directly into the sample cell of the SpectraAlyzer GRAIN analyzer, there is no need for grinding or other sample preparation at all.

The sample will be fed through the sample chamber via a robust feeding device and automatically discharged. In order to analyze powder samples e.g. wheat flour an optional Flour Module is as accessory available. Each grain analyzer can be fitted with a test weight module (aka Bushel weight, hectoliter weight, or specific weight) to determine the volume to weight ratio of the sample. An automatic path length adjustment enables the user to quickly analyse a multitude of whole grain and oil seed samples.

The all grain quality check instrument is controlled with an easy-to-use icon driven software, using a modern interface glass panel slider called COS Central Operation Slider, and a color TFT display with 640×480 pixels. The innovative graphical user interface and its functions is very intuitively to use. The user interface is made of glass for easy hygienic cleaning and years of maintenance free operation.

Key features

NIR Sample – Reference technology

like all SpectraAlyzer® instruments for high sensitive
and long term stable measurements.

Easy sample presentation

by filling the whole grains into the funnel on the top.

User friendly

sample presentation and easy to operate.

Compact design

optimized for bench top or at-line application.

Touch user interface

and intrinsically mounted glass touch for straight
forward hygenic instrument operation.

Many mathematical models

for all kind of products included for quick
algorithms installation and start-up.

How it works

The SpectraAlyzer GRAIN is an all grain analyser and quality check instrument designed for the analysis of solid bulk materials in diffuse transmittance.

The instrument takes spectra of the samples in the short-wavelength range of the near infrared (SW-NIR) radiation. In this spectral range, the absorbance of the sample material is much lower than at higher wavelengths, so that there is still sufficient light intensity left for detection even when the radiation has passed several centimeters of sample. This technique is especially of interest when inhomogeneous samples like whole grains or bigger particles shall be analyzed. In case of grains, it is essential to obtain spectral information from inside the kernels and to make sure that this information is sufficiently representative.

When a grain sample is illuminated/ transmitted with NIR light (NIT Near Infrared transmission), the radiation is partly absorbed, partly scattered, and partly reflected by the kernels. As a result, the beam is no longer well defined in terms of geometric optics (like the transmittance characteristics of water or other clear liquids); this is why the measuring principle is called diffuse transmittance.

The amount of light absorbed by the sample at different wavelengths is directly related to the concentration of chemical functional groups, such as C-H; O-H, and N-H. As these concentrations are in turn related to concentrations of the parameters of interest – for example protein, moisture, or oil – property values can be determined.

The SpectraAlyzer GRAIN – All grain analyser and quality check instrument, is shipped with pre-installed standard calibration models for many products, parameters, and countries where typical applications are:

Grain reception/trading/malting
  • Wheat, durum wheat, rice, barley, corn, soy, malt, green malt, rye, oats, triticale, sorghum/milo, lentils, beans, green and chick peas and others
Flour milling
  • Wheat and rye flour, semolina, ground wheat, rice meal and flour, soy meal, corn meal and flour and others
Oilseed crushing
  • Soybean, canola/rapeseed, sunflower (ground) and others All calibrations provide accurate analytical values and are 100 % transferrable between instruments!
Calibration software

By having all the software tools at hand an innovative calibration model wizard and simple to understand work flow allows even unskilled users to adjust existing and create new calibration models.

The Application worx software package uses database and PLS statistic functions to create the calibration model. In routine use Application worx can be used as direct operating software, giving full access to the instrument while retrieving high resolution spectral data for extended calibration work.



Parameter Range SEP + / –
Protein % 7.1 – 16.8 0.21
Moisture % 8.5 – 15.5 0.18


Parameter Range SEP + / –
Protein % 17.2 – 28.6 0.34
Oil (%) 37.1 – 49.7 0.35
Moisture % 3.7 – 8.1 0.22


Parameter Range SEP + / –
Protein % 6.0 – 13.3 0.21
Moisture % 8.1 – 13.1 0.21


Parameter Range SEP + / –
Protein % 17.2 – 28.6 0.20
Moisture % 3.7 – 8.1 0.15
Ash (%) 0.473 – 1.782  0.03
Water absorption (%) 52.9 – 71.6  1.3
Extensibility (cm) 11.0 – 26.4  1.87


Parameter Range SEP + / –
Protein % 9.9 – 17.3 0.22
Moisture % 8.7 – 13 0.17

Technical data

SpectraAlyzer GRAIN


Design NIR Monochromator
Spectral range (570) 850 – 1100 nm
Verification of wavelength Automatically during start-up
Optical bandwidth 7 nm
No of datapoints 1000
Measurement Transmisson
Sample presentation Automatic
Optical path length Automatically adjusted, range 6 – 30 mm
Measuring time 45 s, 200 – 300 g sample


Screen TFT 640 x 480 pixel, colour
User Interface Glass, COS “Central Operation Slider”, multi-language GUI


Software Integrated, stand-alone operation, fail-safe
Software / database storage Compact flash disk 4 GB
Interfaces RS232, USB, Ethernet
Printer Printer as optional accessory
Input voltage / rated current 90 – 260 V, self-detecting / 200 VA
Protection Dust and humidity


Dimensions Height: 370 mm / width: 400 mm / depth: 440 mm
Weight 27 kg


Flour module For flour, semolina, soy meal and other ground samples
Test Weight Module For determination of volume to weight ratio of the sample


Bluetooth, WLAN, Application worx, wavelength standard, barcode reader, keyboard