Cap Torque Testing.

Child-resistant packaging or C-R packaging has special closures designed to reduce the risk of children ingesting dangerous items. This is often accomplished by the use of a special safety cap. It is required by regulation for prescription drugs, over-the-counter medications, pesticides, and household chemicals. Cap torque testing is performed for both conventional closures and child-resistant bottle caps. In case of liquids, the lower torque limit is considered the minimum pressure of the cap to avoid any leak of the product. The higher torque limit is the maximum force the customer can apply to open or close the product's cap.

TM200 –

Cap torque tester for
open & close type tests
and reporting.

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Proven torque tester for repeatable measuring of opening & closing torque of bottle caps including child-resistant closures. Custom-made cap adapters avoid undesired effects of clamping or applying additional pressure on bottle caps during measuring. A motorized drive ensures repeatability and highly accurate turning movements.

  • Reliably measures open & close torque
  • Can apply downward force for child-resistant closures
  • Quick-change cap adapters, universal or custom-made to the specific shape of a cap or pump
  • Universal self-centering bottle holder accepts small bottles to large jugs
  • Motorized drive for repeatable movements
  • Print test protocols and calibration reports
  • Calibration with traceable reference weights


Open & close torque.

The TM200 is a torque measuring instrument specially designed to work on bottle & pump caps. The exact determination, especially of the opening torque, provides reliable assurance and documentation that bottle caps have been closed with appropriate force. A high-precision load cell located in the main unit continuously measures the torque throughout the testing process.

Repeatable precision.

A motorized drive unit eliminates inconsistencies that would otherwise occur with manual twisting of bottle caps. Caps can be automatically opened and closed with constant and repeatable velocity. For testing child-resistant caps, a defined downward force is exerted on the cap under test, that can be precisely set by the operator.

Cap adapters.

Universal membrane cap adapters can be utilized for the majority of caps with a flat top – minimizing the necessary number of adapters. Molded cap adapters that are custom-made to the specific shape of a cap eliminate additional pressure typically caused by clamping or other cap fixtures that may influence torque readings.


Data management software for all methods, results, and users.

q-doc® software

All your data in one place with built-in 21 CFR part 11 compliance.