ST-LAB6 Automatic Cap Torque Tester


Automatic Cap Torque Tester - ST-LAB5

Sure Torque’s ST-LAB series is the most automated closure Torque Tester on the market, with the ability to handle the most varied container and closure types.

The newest models of the ST-LAB family have user configurable automatic Top Load control for testing Child Resistant closures.

Main features of the new ST-LAB:

- FDA CFR 21 part 11 compliant logging
- Unlimited internal memory with full result logging (not possible to delete results)
- Batch-based memory structure. Results can be recalled in by: Year/Month/Day/Batch
- Programmable Top Load control
- Application angle measurement 
- Fully automatic
- Quick testing (10-15 sec)
- Statistics on test type/sample type (average, sigma, cpk, in/under/over range)

The difference between the ST-LAB6 and the LAB5 is mainly the 21 CFR part 11 compiant logging and the memory capacity and structaure. Main mechanical, control and change parts are the same by the LAB6 and the LAB5


Demo video:


Automatic Cap Torque Tester - ST-LAB5Industries: Beverage, Food, Pharmaceutical, Packaging

Areas: Laboratory, Production


- Release torque testing without breaking seal integrity
- Child Resistant closure testing with programmable Top Load
- Automatic Application Angle measuring 
- Warranty ring application and breaking tests
- Precision capping
- and many more...

  • FDA CFR 21 part 11 compliant logging

  • Unlimited internal memory with full result logging (not possible to delete results)

  • Batch-based memory structure. Results can be recalled in by: Year/Month/Day/Batch

  • Release-application test without breaking the seal integrity of the product. This means: SAVING MONEY and ENVIRONMENT FRIENDLYNESS - the tested and re-torqued sample can be put back on the production line, instead of in the waste - see this savings table.

  • Automatic top load control enables the simple and accurate testing of the Child Resistant closures.

  • 100% operator independent testing

  • All movements are fully automatic (not just the rotation, but also the container and closure gripping)

  • Quick testing – test speed can be set over a wide range

  • 10 different test receipts for the different products  

  • Many included test modes

  • Direct statistical analysis and report creating

  • Possibility to add custom test modes at any time (upgrade-file can be sent in email)

Additional Information

Additional Information

Included accessories 1 set of change parts (container clamp and cap collet)
Pc software and communication cables
Calibration kit
Foamed heavy duty transport case
Smartphone requirement No
Android version No
Measuring range -8.5Nm - +8.5 Nm (cca +/- 75 lbfIn)
Units of measurement LbfIn, LbfFt, Nm, dNm, Ncm, kgfcm
Displayed values Actual, Max1, (Max2), torque-time graph
Accuracy +/- 0,2% F.S.
Safe Overload 120%
Maximum measuring frequency 350 Hz (2.85 ms)
Range analysis Yes – In range / under range / over range
Capable closure types any kind of twist cap
Maximum sample size D200 x 375 mm
Calibration kit included
Operation time No
DC supply DC 24V with included AD110/230 V adapter
Bluetooth range No
Included software Data manager for PC
Memory Unlimited - all te results of the life-cycle are stored
Stored data’s Batch & measurement nr, peak results, date, time, graph, instrument serial number, comment, calibration date, BATCH code, IPC code
Resistance grade IP 54
Language English, German, Hungarian + custom language
Dimensions: Footprint / Height 200x360x480 mm
Net weight 15 kg
Shipping packaging Heavy duty waterproof case as option
Shipping dimensions 56x47x27 cm
Shipping weight depends on packing
Country of Manufacture Hungary
Warranty 3 years

Air supply: 6 Bar filtered air with 6 mm tube


Standard test modes:   

Release test
Range testing – Besides the exact release torque ,out of tolerance readings are indicated by colour signals

Release-apply test. With this test mode it is possible to measure the initial release torque without damaging the temper-proof band and the sealing even on carbonated or aseptic products.

Apply-release test (for finding the relationship between the application and the release torque on several cap-container combinations)

Warranty Ring application and release tests

Strip test - The strip test mode measures the peak torque value, where threads break/deform in an on-torque/application cycle. In this way it is possible to measure the maximum torque that can be applied to a closure/container, without permanent damage of the closure/container threads.
Top load can be configured by for each test individually. By the combined tests top load can be set differentlyfor Application and Release!   

Additional test modes in the 'Advanced Top Load' option:

Application angle measurement

A release test where after passing the initial release torque the closure will be fully removed, and the original application angle will also be measured

Application Angle test - Sure Torque


Top load seek test

Top load will be increased automatically until the closure starts to open (force increment and increment dynamics are configurable)

Top Load Seek test - Sure Torque


Theory of release torque testing without breaking the seal integrity of the closure

ST-LAB presentation

ST-LAB savings table

Watch demo video or download it:


ST LAB video presentation:  /download/


Top Load Seek test on Child Resistant closures:


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ST-LAB6 Automatic Cap Torque Tester

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Automatic cap Torque Tester

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