quality  control  instruments

Why should you CHOOSE sixt7 gmbh quality control instruments ?

For high-quality containers
For lighter containers
To overcome production process variations
To overcome scrap issues / waste of material
To improve line efficiency and reduce overall production costs
For an Eco-friendly production


Six-T7 GmbH is providing the Packaging Industry all around the world with customized solutions for any small, medium or larger quality control laboratory.

With a broad line of products and services, with a full industrial expertise, Six-T7 GmbH becomes your best partner in terms of quality control.

Stress application


Polarization Light

Stress crack tester

PL-G Polarization Light for Glass

Glass Stress Viewer


Stress introduced during the manufacture of glass components has an important effect on the strength of the product. This effect can be detrimental or beneficial in that it may contribute to failure in service, or to an increase in strength.

It is clearly important for quality control to monitor the residual stresses that are present.The “PL-G” Glass Stress Viewer has been designed for the qualitative inspection of glass components including tableware, small bottles, jars, scientific glassware and ampoules.

The adjustable working space and sloped design accommodate a wide range of products with the option of a magnifier to aid the inspection of small parts.


  • Adjusted working space 250-500 mm
  • 530nm tint plate provides full color stress representation
  • Removable magnifier for examining small samples
  • Angle adjustable design for operator comfort
Equipped with a magnifier
View by PL-G


  • Viewing area :125 mm x 105 mm
  • Overall size : 450 (L) x 490 (W) x 650 (H)mm
  • Light source : 2 x 18 watt (Fluorescent lamps)
  • Power supply : AC 220V (AC 110V optional)

Interested ?

Contact us

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