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

Product

Vacuum Leakage Tester

STM-C
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

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- Commodity name: Vacuum Leakage Tester
STM-C
Vacuum Leak Tester for Packaging

Overview
The LabStone Vacuum Leak Tester is a professional laboratory instrument designed to evaluate the sealing integrity of flexible and rigid packages, including bags, bottles, tubes, cans, and boxes.
By immersing the sample in water and applying a precisely controlled vacuum, the instrument detects air leakage through visible bubble formation—amplified 5–10× for easy observation.
This tester is widely used in pharmaceutical, food, cosmetic, medical device, and packaging industries for incoming QC, R&D validation, and compliance testing.

Key Functions:
Seal integrity testing of:
Flexible pouches & sachets
Plastic & glass bottles
Tubes (laminate & plastic)
Cans & metal containers
Blister packs & rigid boxes
Detection of micro‑leaks invisible to the naked eye
Validation of packaging process stability
Support for positive / negative leak qualification
Principle:
Make the sample immersed in water, vacuum the vacuum chamber to produce internal and external pressure difference, observe the gas inside the sample escaping into the water, to determine the sealing performance of the sample(The bubble will be magnified 5-10 times).
The test specimen is placed inside the transparent vacuum chamber filled with water.
The chamber is evacuated to a preset vacuum level.
A pressure differential between the inside and outside of the package forces internal air to escape.
Escaping air forms bubbles in the water, visually indicating seal failure.
Bubble formation is magnified 5–10×, allowing detection of extremely fine leaks.
Compliant Standards:
ASTM D3078 – Standard Test Method for Determination of Leaks in Flexible Packaging by Bubble Emission
GB/T 15171 – Determination of Seal Strength and Leak Performance of Soft Packaging
Characteristics:
- Vacuum degree and vacuum time can be set manually.
- Using imported pneumatic components， more quickly forming a vacuum environment.
- Automatically maintain constant pressure, ensure the accuracy and stability of the vacuum.
- Microcomputer intelligent control, the test procedure is fully automated.
- Flexible test report printing: single test print or group test print. Report content includes：test result，vacuum degree， constant pressure time， etc.
- Color LCD.
Key Features:
Precision Vacuum Control
Adjustable vacuum degree: 0 to –95 kPa
Vacuum accuracy: ±0.1 kPa
Unlimited vacuum hold time for extended observation
Stable & Repeatable Results
Imported pneumatic components ensure rapid vacuum generation
Automatic constant‑pressure maintenance eliminates pressure drift
Microcomputer intelligent control guarantees consistent test conditions
Operator‑Friendly Design
Color LCD display with intuitive interface
Fully automated test sequence
Manual or automatic mode selection
Flexible Reporting
Single‑test or group‑test printing
Reports include:
Test result (Pass/Fail)
Vacuum degree
Constant pressure duration
Date/time stamp
Versatile Chamber Options
Standard chamber: 300 × 330 mm
Optional large chamber: Ø500 × 330 mm
Standard configure: Vacuum chamber, Test Main Unit.
User self-supply: Compressed air.

Applications by Industry
Pharmaceutical & Biotech
Blister pack leak testing (tablets, capsules)
IV bag & infusion pouch seal verification
Primary packaging validation for stability studies
Food & Beverage
Retort pouch integrity testing
Snack & coffee bag seal checks
Condiment sachet leak detection
Medical Devices
Sterile barrier system validation
Implant packaging seal assurance
ISO 11607 compliance support
Cosmetics & Personal Care
Tube and pump seal testing
Cream jar and bottle leak verification
Packaging R&D & QC Labs
Material selection and benchmarking
Process validation (heat seal, cold seal)
Comparative leak performance studies

Frequently Asked Questions (FAQ)
Q1: What types of packages can this tester evaluate?
A: It supports bags, bottles, tubes, cans, blister packs, and rigid boxes made of plastic, laminate, foil, glass, or metal.
Q2: How sensitive is the bubble detection method?
A: The vacuum method magnifies escaping air 5–10×, allowing detection of micro‑leaks that would otherwise be invisible.
Q3: Is this method recognized by international standards?
A: Yes. It fully complies with ASTM D3078 and GB/T 15171, which are widely accepted in pharmaceuticals, food, and packaging industries.
Q4: Can I run long‑duration tests?
A: Yes. The vacuum hold time is unlimited, enabling extended observation for slow or intermittent leaks.
Q5: Is the instrument suitable for GMP/ISO environments?
A: Absolutely. The tester provides documented, repeatable results suitable for GMP, ISO 11607, and HACCP quality systems.
Function:
Sealing performance tests of bags, bottles, tubes, cans, boxes, and other containers。
Principle:
Make the sample immersed in water, vacuum the vacuum chamber to produce internal and external pressure difference, observe the gas inside the sample escaping into the water, to determine the sealing performance of the sample(The bubble will be magnified 5-10 times).
Standards:
GB/T 15171、ASTM D3078.
Characteristics:
- Vacuum degree and vacuum time can be set manually.
- Using imported pneumatic components， more quickly forming a vacuum environment.
- Automatically maintain constant pressure, ensure the accuracy and stability of the vacuum.
- Microcomputer intelligent control, the test procedure is fully automated.
- Flexible test report printing: single test print or group test print. Report content includes：test result，vacuum degree， constant pressure time， etc.
- Color LCD。
Specification:
- Vacuum degree: 0~-95Kpa
- Vacuum precision: 0.1Kpa
- Vacuum time: unlimited.
- Size of vacuum chamber: 300Ⅹ330mm（optical Ф500Ⅹ330mm）
- Gas pressure: 0.7-0.8MPa (user self-supply)
- Connector size: Ф6 mm (Gas source provided by users)
- Size of control box: 400mm×200mm
- Power supply: AC 220/110V 50/60Hz
- Net wet: 20Kg
Standard configure: Vacuum chamber, Test Main Unit.
User self-supply: Compressed air.

Keywords:

Bubble Vacuum Sealing Leak Tester

Packaging Integrity Tester -Vacuum Decay Method

Vacuum Leakage Tester

Vacuum Leak Tester for Packaging

Overview

Key Functions:

Key Features:

Applications by Industry

Pharmaceutical & Biotech

Food & Beverage

Medical Devices

Cosmetics & Personal Care

Packaging R&D & QC Labs

Frequently Asked Questions (FAQ)