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Sartorius SealTester — Innovative In-line Air Tightness Checker Saves Time And Labor Costs

March 27, 2009, BOHEMIA, NY, USA—Recent headlines in many of today's newspapers state, "Consumer Confidence in Food Supply Drops to New Lows." More and more food manufacturers are under pressure to bring their products to market safely and securely. To meet the needs of stringent freshness and quality, Sartorius introduces the SealTester, a rugged instrument that checks packaging for air/gas tightness in-line, effortlessly and accurately.

The key advantage of the Sartorius SealTester is its saving in personnel costs compared to random physical sampling and testing. Another benefit is its extremely high level of dependability and consistency when checking for air or gas leaks, without any loss of the product being tested. For further assurance the SealTester is protected by both European and USA patents.

How the SealTester Delivers the Goods
The Sartorius SealTester uses a powerful servo control to direct its six servo motors. The control manipulates three measuring belts in such a way that the flexible bags in the production line do not collide with each other nor with the belts. To be more specific:

- The first measuring belt administers pressure on the bag and the thickness of the bag is registered. The pressure can be adjusted constantly using a touch screen.
- The second measuring belt exerts pressure (adjustable) on the bag that is greater than during the first measurement. If the bag has a leak, air or gas will escape from the packaging at this point.
- The third measuring belt will repeat the exact registration of the first measuring belt. If the bag is airtight, no gas or air will have escaped from the bag after passing the second measuring belt.
- If there is a difference between the results of the first measuring belt and the third measuring belt, the bag will automatically be rejected from the line.

The Importance of a Freshness Guarantee
A tiny hole in the final packaged product can cause major problems for a food manufacturer. Recalls, bad publicity and health alerts are always possible, especially if the food gets contaminated. The consequences can be devastating to both the Food supplier and customer alike. The Sartorius SealTester will monitor the package on line and assure that the food inside the package will remain fresh and free of air or gas leak contamination.

A profile of Sartorius
The Sartorius Group is an internationally leading laboratory and process technology provider covering the segments of Sartorius Mechatronics and Sartorius-Stedim Biotech. For the Sartorius Mechatronics segment in particular, the company manufactures equipment and systems featuring weighing, measurement and automation technology for laboratory and industrial applications. Its Sartorius-Stedim Biotech segment covers major areas of focus on fermentation, filtration, purification, fluid management and laboratory applications. Key Sartorius customers are from the pharmaceutical, chemical and food and beverage industries and from numerous research and educational institutes of the public sector. Sartorius has its own production facilities in Europe, Asia and America as well as sales subsidiaries and local commercial agencies in more than 110 countries.

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