Digital leak tester GB-ML

vacuumpressurepneumatic

Product Introduction
The GB-ML Packaging Leakage Tester is a compressed-air powered instrument that controls the sealing barrel lid via a pneumatic cylinder. It integrates a high-precision electronic pressure sensor and a microcomputer control system to evaluate the sealing process and integrity of flexible and rigid packages, providing objective data for technical acceptance. The equipment is suitable for sealing performance testing in food, pharmaceutical and consumer goods industries.

Testing Principle
The sample is immersed in water inside a vacuum chamber and subjected to a controlled vacuum to create a pressure differential between the inside and outside of the package. Sealing integrity is assessed by observing escaping gas bubbles (bubble method) or dye ingress into the sample (dye penetration method).

Applicable Standards
GB/T 15171, ASTM D3078-2002 (2013), USP 1207.2

Product Features

• High-precision electronic pressure sensor for real-time monitoring of vacuum level and detection of small leaks.
• Fully automatic cycle with programmable vacuum degree and holding time; automatic vacuuming, holding, venting and pneumatic lid control.
• Pneumatic system for rapid pressure equalization to reduce cycle time and ensure repeatable conditions.
• Supports multiple test methods: bubble detection and dye penetration for flexible and rigid packaging.

Application Areas

• Flexible packaging: pouches, bags and film-sealed packages.
• Plastic containers: bottles, jars and tubs.
• Glass containers: food and pharmaceutical glass bottles.
• Metal packaging: cans, aerosol cans and metal tubes.
• Any packaging formats requiring sealing integrity verification.

Technical Parameters

• Vacuum degree: 0-90 kPa
• Vacuum accuracy: ±1% of indicated value
• Vacuum holding time: 0.01 s–99.99 h
• Sealing barrel size (standard): Φ600×591 mm (other sizes optional)
• Effective vacuum chamber size (standard): Φ550×396 mm (customizable)
• Air inlet pressure: 0.6–0.8 MPa
• Power: 50 W
• Instrument dimensions: 1005×802×1307 mm
• Power supply: 220 V, 50 Hz