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Tablet Hardness Testers

Tablet hardness testers measure how much force is needed to break a tablet. This helps ensure tablets are strong enough to handle packaging and shipping but still dissolve properly. Testing hardness is important for quality control in pharmaceutical manufacturing. It helps maintain consistent tablet strength and performance. These testers are used in labs and production lines to check if tablets meet required standards.

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A vertical shot of the Stokes Tablet Hardness Tester.

Tablet Hardness Tester

The Stokes Tablet Hardness Tester Model 539 is an essential tool for tablet manufacturers, designed…
The Stokes Tablet Hardness Tester Model 539 is an essential tool for tablet manufacturers, designed to deliver precise hardness measurements for improved quality control. It helps address common issues such as weight and thickness variations in tablets compacted from a single granulation, which can affect density and overall hardness. The Model 539 measures tablet hardness in kilogram force required to crush the tablet, providing accurate and consistent results. It replaces subjective methods like finger sensitivity with a dependable and easy to operate device. Using accurate hardness data allows manufacturers to:
  • Optimize tablet press machine pressures
  • Reduce wear on punches and dies
  • Lower tooling costs
  • Improve overall production efficiency
Designed for accuracy, reliability, and ease of use, the Stokes Model 539 supports high quality standards while helping reduce operational costs in tablet manufacturing. Read our article about the Stokes Tablet Hardness Tester.

Tablet Hardness Testers FAQs

Tablet hardness is usually measured in Newtons (N), which is the standard unit of force. Other units like kilograms (kg), kiloponds (kp), and pounds (lb) are also used, depending on the equipment and regional preferences.

Hardness affects how well a tablet can handle packaging, shipping, and storage. It also influences how the tablet dissolves in the body, which can impact how the medicine works.

There are manual testers, which require an operator to apply force, and automated testers, which use motors to apply consistent pressure. Automated testers often provide more precise and repeatable results.

Regular calibration is essential to ensure accurate measurements. The frequency depends on usage and manufacturer recommendations, but it's typically done periodically to maintain reliability.

Several factors can influence tablet hardness, including the concentration of binders, moisture content, and the compression force used during manufacturing.

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