What is the edge crush test and why you should perform it?

Reviewed by Anurag Mishra (Sr. Technical Consultant)

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The edge crush strength of corrugated boxes will help you to make sure that the boxes delivered are of high quality. You can easily test the edge crush strength of corrugated boxes with the help of the Testronix edge crush tester. This lab testing instrument helps you to measure the edge-wise compression strength of boxes with ease.

Here in this blog, we are going to provide you with the importance of an edge crush tester and how this lab testing equipment is helpful in testing the quality of corrugated boxes. We will also discuss the importance of the edge crush test in the paper and packaging industry.

Introduction about edge crush test

The edge crush test is used to determine how well cardboard resists cross-sectional crushing pressures. The edge crush tester aids in determining the box's edge-wise strength, which is important since the box's edges are designed to be strong in order to provide protective strength against compressive pressures. As a result, the edge crush tester assists the maker in delivering the best box while assuring the material's protective potential.

This test done by the edge crush tester testing instrument will help you to determine the strength and quality of corrugated boxes that can be crushed at the time of transportation and handling. Testronix offers a high-quality edge crush tester digital model that makes it easy for you to conduct the test. Below we have mentioned the features you will get with the help of this lab testing instrument.

Features of Testronix edge crush tester

Testing the stacking ability of a box's edge is the most feasible and repeatable approach to measure how well it will hold its form under vertical weight during transit. For many years, many corrugated box manufacturers in the packaging business have relied on this lab testing instrument to ensure that their consumers receive reliable products.

Below we have listed the features you will get with this lab testing instrument:

  • Microprocessor-based display for accurate test results 
  • Display for compression strength of test specimen 
  • Separate fixtures for ring crush, edge crush, and flat crush test. 
  • Highly accurate test results under a compression force
  • Feather touch controls RCT/FCT/Edge Crush Tester reveals the crushing resistance in terms of Kg/Unit length. 
  • Load Cell Capacity 100 Kgf
  • Accuracy ±2% at full load (with master load)
  • Least Count/Resolution 0.01 Kgf Power 220V, Single phase, 50 Hz Test Speed 12.5± 2.5 mm/min 


  • Safety Switch Upward & Downward Limit Switches 
  • Material Mild Steel Powder coated body 
  • Dimensions 600x500x863 mm
  • Computerized model available on request 
  • Thermal printer connectivity optional feature 

Technical Specifications of Testronix edge crush tester digital

  • Maximum Load range: 100 kgf
  • Test Speed Range: 12.5 ± 2.5 mm/min
  • Load Monitoring: Peak Load indicator with digital readout and peak hold feature
  • Load Sensor: S-type Load Cell.
  • Load accuracy: ±3% full scale (with the master load.)
  • Deflection: ±3% full scale
  • Least count: 100 kgf/ 100gm
  • Load Cell Overload safety: 80% of the total load.
  • Motor: ¼ HP, 30 rpm single phase motor.
  • Safety Feature: Up and down fixed and movable limit switch rings.
  • Over Load relay contact rating: Potential free relay 5 Amp. 220 V AC single phase
  • Earthing Required: Proper Earthing is required corresponding to not more than 4 V AC with respect to neutral.
  • Sample Size for ECT: 50 + 1 mm X 30 + 1 mm
  • Block size: 20*20 mm

With these features and technical specifications, it will be easy for you to conduct the test using the Testronix edge crush tester. Whenever you buy an edge crush tester then you can simply maintain it with these 5 easy tips. At Testronix, our instruments will be designed by keeping all industry standards in the mind. The ECT, or Edge Crush Test, evaluates corrugated cardboard's capacity to protect products during storage or transit.

It is crucial in the paper and packaging business since it aids in determining the compression forces that a box can withstand in order to ensure the safety of goods and products. To know about the edge crush tester price, or want to conduct an online demo for this lab testing equipment, give us a call at +91 9313140140 or email us at info@testronixinstruments.com. Our team of technical experts will assist you with all your queries.

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