Torque Tester

QualiTorque™ Series – Bottle Cap & Closure Torque Testing 

A torque tester is a precision instrument that measures the rotational force — torque — required to apply or remove a threaded closure from a container. For packaging containing liquids, powders, or sensitive products, the torque applied to a cap during capping and the torque required to open it afterward are two of the most consequential quality parameters on the production line. Under-torqued closures fail to seal, allowing leakage, contamination, and product loss during transport and storage. Over-torqued closures create ergonomic problems for consumers, cause stripped threads, and can generate excessive torque retention that triggers child-resistant closure failures or makes senior-friendly packaging inaccessible. Measuring and controlling both application (locking) and removal (opening) torque is therefore a fundamental quality control function in any packaging operation where threaded closures are used.

Qualitest's QualiTorque™ Series spans four models covering every level of torque testing need in packaging quality control and research. The QualiTorque™ 100 is a portable, battery-operated handheld instrument designed for flexible use on the production floor, during incoming closure inspection, or at any point in the packaging line where a QC technician needs immediate torque data. The QualiTorque™ 200 is a benchtop manual instrument manufactured to ASTM standards, delivering consistent, operator-stable readings for routine laboratory QC without automated mechanics. The QualiTorque™ Auto-D1 introduces motorized automatic operation at a fixed default speed of 10 RPM, with selectable peak-judgment or time-judgment stop modes and full support for ASTM D2063, D3198, and D3474. At the top of the range, the QualiTorque™ Auto-D2 adds variable-speed digital motor control from 0.50 to 23.00 RPM, data sampling at up to 1,200 Hz, real-time torque curve display, TCP/IP PC connectivity, and Windows software for complete torque-angle analysis and automated reporting — making it the platform of choice for packaging R&D, child-resistant closure qualification, and high-throughput automated QC environments.

Close Every Cap with Confidence

Every threaded closure on every product you ship represents a quality promise to your customer, your retailer, and your regulatory authority. Whether that closure is a child-resistant pharmaceutical bottle cap, a high-volume beverage PET closure, a cosmetic pump dispenser, or an industrial chemical container, the only way to know it was applied correctly is to measure the torque. The QualiTorque™ Series gives your QC team the right instrument for that measurement at every point in your operation — from the receiving dock to the laboratory to the production floor. With ASTM-compliant designs, models from portable handheld to fully automated PC-controlled, and real-time curve analysis for engineering-level closure development, Qualitest has the torque testing platform your packaging program needs. Contact Qualitest today to speak with a packaging testing specialist, request a product demonstration, or receive a quotation for any model in the QualiTorque™ Series.