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Key: test item, instrument name, total nonvolatile migration, gravimeter, moisture permeameter

Product

Bubble Vacuum Sealing Leak Tester

STM-A /B
Focusing on packaging and material testing technology, we are committed to quality control in industries such as healthcare, pharmaceuticals, food, packaging, textiles, and new materials. Our products are widely used in enterprises, testing institutions, universities, and research institutes.

Category:

Seal and Leakage

Negative Pressure Sealing Tester

Vacuum Leak Tester

Package Integrity Testing for Food, Pharmaceutical and Industrial Packaging

Overview

The LabStone STM Series Vacuum Leak Tester is designed to evaluate the seal integrity and leakage performance of flexible and semi-rigid packaging. By creating a controlled vacuum environment and observing bubble formation from submerged packages, the instrument quickly identifies leaks, pinholes and sealing defects.

It is widely used in food packaging, pharmaceutical packaging, medical device packaging, cosmetics and industrial packaging quality control.

Function:

Applicable to the leakage determination of packages for food, medical instruments, daily chemical products, cars, electronic components, stationeries and other industrial products.

Working Principle:

The package specimen is submerged in water inside a transparent vacuum chamber. A vacuum is applied to create a pressure difference between the inside and outside of the package. If leakage paths exist, air escapes from the package and forms visible bubbles. The leak location and package integrity can then be evaluated visually.

Compliant Standards: ASTM D3078, GB/T 15171

Key Features

Fast Vacuum Generation

Rapidly establishes a stable vacuum environment for efficient testing.

High Vacuum Capability

Vacuum level up to -90 kPa, suitable for detecting small package leaks.

Transparent Vacuum Chamber

Allows direct observation of bubble formation and leak locations.

Easy Operation

Simple testing procedure with minimal operator training.

Reliable Performance

High-quality pneumatic components ensure stable and repeatable test results.

Dual Chamber Options

Available with different chamber sizes to accommodate various package dimensions.

Low Maintenance

Robust design with minimal maintenance requirements and low operating cost.

Technical Specifications

Item	STM-A	STM-B
Vacuum Range	0 to -90 kPa	0 to -90 kPa
Chamber Size	Φ300 × 330 mm	Φ500 × 330 mm
Air Supply Pressure	≤0.7 MPa	≤0.7 MPa
Power Supply	AC 220V / 110V, 50/60Hz	AC 220V / 110V, 50/60Hz
Instrument Size	300 × 380 × 450 mm	300 × 380 × 450 mm
Net Weight	12 kg	17 kg

Typical Applications

Food Packaging

Vacuum bags
Snack packaging
Frozen food packaging
Retort pouches
Coffee packaging

Pharmaceutical Packaging

Medical pouches
Sachets
Flexible pharmaceutical packaging
Sterile packaging materials

Medical Devices

Sterile barrier systems
Medical packaging validation

Cosmetics & Daily Chemicals

Cosmetic pouches
Wet wipe packaging
Personal care product packaging

Industrial Products

Electronic component packaging
Automotive component packaging
Precision industrial packaging

Testing Laboratories

Packaging quality verification
Package integrity testing
Compliance testing

Test Items

The STM Series is suitable for detecting:

Package leakage
Seal failure
Pinholes
Micro-leaks
Weak sealing areas
Transportation damage
Manufacturing defects

Industries Served

The STM Series is widely used by:

Food Manufacturers
Pharmaceutical Companies
Medical Device Manufacturers
Packaging Producers
Cosmetic Manufacturers
Electronics Manufacturers
Universities and Research Institutes
Third-Party Testing Laboratories

Frequently Asked Questions (FAQ)

What is a vacuum leak test?

A vacuum leak test evaluates package integrity by applying a vacuum and observing bubble formation from leaking packages submerged in water.

What types of packaging can be tested?

Flexible pouches, vacuum bags, sachets, medical packaging, cosmetic packaging and many other package types.

Can pharmaceutical packaging be tested?

Yes. The STM Series is suitable for pharmaceutical packaging integrity verification and routine quality control.

Can leak locations be identified?

Yes. Bubble formation allows operators to visually locate the leakage point.

Is compressed air required?

Yes. A compressed air source with pressure not exceeding 0.7 MPa is required.

What are other names for this product?

Vacuum Leak Tester
Package Integrity Tester
Seal Integrity Tester
Leak Detection Tester
Bubble Leak Tester
Flexible Package Leak Tester
Packaging Leak Detector
Packaging Leak Tester
Vacuum Bubble Emission Tester
Package Integrity Testing Equipment

Function:
Applicable to the leakage determination of packages for food, medical instruments, daily chemical products, cars, electronic components, stationeries and other industrial products.
Principle:
Vacuum the chamber to produce pressure difference of air between inside and outside packages, which is immersed in water. Determine the leakage of the package by observing the bubbles rising.
Standards:
GB/T 15171、ASTM D3078
Characteristics:
- Rapid formation of vacuum test environment.
- The vacuum degree can reach above - 90kpa.
- High quality components, stable and reliable.
Specification：
- Vacuum Degree: 0～-90kPa
- Size of Vacuum Chamber：Φ300mm×330(H)mm (Model A)
　　　　　　 Φ500mm×330(H)mm(Mode B）
- Gas pressure: ≤0.7MPa（user self-supply）
- Size： 300mm(L)×380mm(B)×450mm(H)
- Power Supply： AC 220/110V 50/60Hz
- Net Weight： STM-A:12kg; STM-B:17kg

Keywords:

none

Vacuum Leakage Tester