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Help CenterASTM D4991 Packing Strength Was Tested by Negative Pressure Method in Sealed Tank ASTM D3078
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USES AND METHOD
LT-02 leak tester is the first generation automatic vacuum tester introduced by Cell Instruments. The ASTM D3078 is the standard test method for determination of gross leaks in flexible packaging containing a headspace gas by bubble emission. The test is conducted by submerging the test specimen in the immersion fluid within the confines of a vacuum chamber.
LT-02 is suitable for seal integrity tests for various package forms used in food, pharmaceutical, medical, stationery, cosmetics, packaging sectors, etc.
The specimen is submerged in the water within the vacuum chamber, and then the vacuum chamber is evacuated to form a pressure difference between the inside and outside of specimen. The seal performance can be obtained by observing whether there are steady progression of bubbles from the specimen and how the specimen expands and restores to its original shape after vacuum release.
Features
Digital vacuum degree and test time setting; test process automatic
Automatic vacuum maintenance and air back-flushing
Cast type PMMA vacuum chamber, better for food and pharmaceutical testing
We offer different chamber size
Use compressed air to convert to vacuum. No vacuum pump required
Easy operation and maintenance
TECHNICAL DATE
Vacuum: 0~-90KPa
Vacuum chamber size: Φ270 mm x 210 mm (H) ( Customization available)
Gas source: 0.7 MPa Compressed air to be prepared by user
STANDARS
ASTM D3078 , ASTM E515, GB/T 15171
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