Grain Alpha-Amylase Activity Tester
Measure alpha-amylase activity and sprouting damage in wheat and grain with precision.
600 W water bath, ±0.05 g stirring rod, ≤10% repeatability.
Louise Corscadden, PhD
Director of Science · ConductScience
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Key Specifications
Full details →- Stirring Rod Weight
- 25 ± 0.05 g
- Water Bath Heating Element Power
- 600 W
- Sample Tube Inside Diameter
- 20 ± 0.02 mm
- Sample Tube Outside Diameter
- 23.8 ± 0.25 mm
- Sample Tube Inside Height
- 220 ± 0.3 mm
- Repeatability
- Difference between two test results ≤ 10% of average value
The tester measures the alpha-amylase activity in grain samples, providing an accurate, standardized assessment of sprouting damage in wheat and other grains. Alpha-amylase activity directly affects dough quality and bread texture, making this measurement a critical quality checkpoint at every stage of the grain supply chain.
The key metric this instrument reports—the falling number—indicates how severely a grain lot has been affected by pre-harvest sprouting. A lower falling number signals higher enzyme activity and greater quality degradation, while a higher value reflects sound, undamaged grain. This single figure allows buyers, millers, and processors to make confident grading and blending decisions quickly.
The meter is designed for grain elevators, storage facilities, wheat and bread flour mills, and food processing operations that require routine incoming or in-process quality checks. Its water bath heating system and precision stirring rod deliver repeatable results, with the repeatability specification requiring that two test results on the same sample differ by no more than 10% of their average value.
Stirring Rod Weight
- 25 ± 0.05 g
Water Bath Heating Element Power
- 600 W
Sample Tube Inside Diameter
- 20 ± 0.02 mm
Sample Tube Outside Diameter
- 23.8 ± 0.25 mm
Sample Tube Inside Height
- 220 ± 0.3 mm
Repeatability
- Difference between two test results ≤ 10% of average value
Power Supply
- AC 220 V, 50 Hz
Dimensions (L × W × H)
- 420 × 340 × 350 mm
Weight
- 25 kg
What type of grain samples can this meter test?
The tester is designed for grain testing, with particular application to wheat and wheat flour. It is well suited for grain storage facilities, milling operations, and food processing environments that need to assess sprouting damage in these materials.
What does the falling number result actually tell me?
The falling number reflects the level of active alpha-amylase enzyme in a grain sample. A lower falling number indicates higher enzyme activity, which typically corresponds to greater germination damage and poorer baking quality. A higher falling number indicates lower enzyme activity and better grain integrity.
How repeatable are the test results?
The instrument is specified so that the difference between two test results on the same sample does not exceed 10% of their average value, ensuring consistent, reliable data for quality grading decisions.
What are the key hardware specifications I should know before purchasing?
The water bath heating element is rated at 600 W. The stirring rod weighs 25 ± 0.05 g, the sample tube has an inside diameter of 20 ± 0.02 mm, an outside diameter of 23.8 ± 0.25 mm and an inside height of 220 ± 0.3 mm. The unit operates on AC 220 V, 50 Hz power. Overall dimensions are 420 × 340 × 350 mm and the instrument weighs 25 kg.
What power supply does the tester require?
The meter requires an AC 220 V, 50 Hz power supply. Ensure your facility provides this voltage before installation.
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