Penetrability Tester for Vial Stopper | ISO 8871-5

The NPT-01 penetrability tester is used to test the force required to pierce vial stoppers and complies with ISO 8771-5.

I. Introduction of Penetrability Tester

In the realm of pharmaceutical packaging, ensuring the integrity of rubber stoppers is paramount. The seal provided by these stoppers can mean the difference between preserving the efficacy of life-saving medications or risking contamination and degradation. Penetrability testing emerges as a critical procedure in guaranteeing the reliability of these stoppers, thereby safeguarding the quality of pharmaceutical products.

1. Overview of penetrability testing and its necessity

Penetrability testing is a method employed to evaluate the puncture resistance of materials, such as rubber stoppers used in pharmaceutical packaging. By subjecting these materials to controlled penetrability forces, manufacturers can assess their ability to withstand penetration by needles or other sharp objects commonly encountered during handling, storage, and administration.

2. Introducing the advanced penetrability tester instrument

penetrability tester iso 8871-5 testing
NPT-01 Penetrability Tester

Cell Instruments, a leading manufacturer of materials testing instruments, presents an innovative solution for penetrability testing. Our penetrability tester is designed to accurately measure the maximum force exerted by a needle piercing through various materials, providing valuable insights for testing personnel. With advanced features and precise functionality, our penetrability tester offers the best performance and reliability, catering to the diverse needs of industries such as packaging, pharmaceuticals, and more.

II. The Heart of Penetrability Testing

1. Detailed explanation of penetrability testing procedure

Penetrability testing involves subjecting a material sample to a controlled force, typically applied by a standardized needle or probe. The maximum force required to pierce the sample is measured and serves as an indicator of its puncture resistance. This test method provides an important reference for understanding the performance of vial rubber stoppers, especially their puncture resistance.

2. Significance of precise puncture resistance measurement

Accurate puncture resistance measurement is crucial for assessing the performance and durability of rubber stopper, especially in applications where they are subjected to penetrability forces regularly. This data aids in product development, quality control, and compliance with industry standards.

3. The technical feature of the penetrability tester

Our penetrability tester is equipped with state-of-the-art features to facilitate accurate and consistent testing. A PLC control unit and a user-friendly 7-inch HMI touch screen provide intuitive operation, while a precision ball screw and stepper motor ensure precise testing results. Variable test speed capability allows for flexible testing parameters, accommodating a wide range of materials and applications. Safety features such as position restrictors and overload protections ensure operator safety, while an automatic returning function saves operation time. Additionally, a dot matrix type microprinter is embedded for long-term data keeping, ensuring traceability and compliance with regulatory standards.

III. Rubber Stopper: A Critical Component for Vial Stopper

1. The role of rubber stoppers in vial packaging

Rubber stoppers play a vital role in maintaining the integrity and sterility of vial packaging, particularly in the pharmaceutical industry. They serve as barriers against contamination, ensure proper sealing, and facilitate aseptic transfer of liquids or medications.

2. Factors affecting rubber stopper performance

The performance of rubber stoppers is influenced by various factors, including material composition, design, and manufacturing process. Factors such as chemical compatibility, compression set, and dimensional stability can impact the sealing properties and puncture resistance of rubber stoppers, thereby affecting their suitability for specific pharmaceutical formulations and packaging configurations.

IV. Advanced Features of the Penetrability Tester

1. Highlight Technological Advancements Integrated into the Penetrability Tester

The penetrability tester boasts several advanced features that set it apart from traditional testing methods. Its automation capabilities streamline testing procedures, while precision engineering ensures accurate and repeatable results. Multiple sample jigs and needle types offer versatility to accommodate various testing requirements.

2. How Automation and Accuracy Contribute to Reliable Testing Results

Automation eliminates manual errors and ensures consistent testing conditions, enhancing the reliability and reproducibility of results. The precision ball screw and stepper motor mechanism deliver precise control over the penetrability process, enabling researchers and manufacturers to make informed decisions based on reliable data.

3. Comparative Analysis with Traditional Testing Methods

Compared to traditional testing methods, such as manual penetrability testing, the penetrability tester offers numerous advantages, including higher throughput, improved accuracy, and enhanced safety. Its intuitive interface and user-friendly design make it accessible to operators of all skill levels.

V. How the Penetrability tester benefits the pharmaceutical industry

The adoption of the Penetrability Tester presents numerous benefits for the pharmaceutical industry, including:

  1. Enhanced Product Quality: By ensuring the puncture resistance of rubber stoppers, manufacturers can uphold the integrity and efficacy of pharmaceutical products, safeguarding patient safety and regulatory compliance.
  2. Streamlined Quality Assurance: Automated testing processes and real-time data analysis streamline quality assurance procedures, enabling proactive identification and resolution of potential issues.
  3. Optimized Material Selection: Accurate and reproducible test results empower manufacturers to make informed decisions regarding material selection, optimizing performance, and cost-effectiveness.
  4. Regulatory Compliance: Compliance with international standards, such as ISO 8871-5, demonstrates commitment to quality and regulatory compliance, enhancing market acceptance and competitiveness.

VI. Compliance and Industry Standards–ISO 8871-5

The penetrability tester complies with ISO 8871-5 and other relevant industry standards for rubber stopper penetrability testing. ISO 8871-5 specifies test methods for determining the puncture resistance of rubber closures used for vials and injection bottles. By adhering to these standards, manufacturers can ensure consistency and accuracy in testing procedures.

VII. Why Choose Our Penetrability Tester?

1. Differentiators That Make the Penetrability Tester a Superior Choice

  • Advanced automation capabilities for streamlined testing procedures
  • Precision engineering for accurate and consistent test results
  • Versatility to accommodate various sample types and testing requirements
  • Compliance with industry standards, including ISO 8871-5
  • Dedicated customer support, warranty, and technical assistance

2. Customer Support, Warranty, and Technical Assistance

Cell Instruments is committed to providing exceptional customer support, including comprehensive warranties and technical assistance. Our team of experts is available to assist customers with instrument setup, calibration, troubleshooting, and training, ensuring optimal performance and maximum value from their investment.


1. What are the key considerations when selecting a penetrability tester for pharmaceutical packaging applications?

When selecting a penetrability tester for pharmaceutical packaging applications, it’s essential to consider factors such as testing accuracy, precision, flexibility, and compliance with regulatory standards. Additionally, features such as safety mechanisms, user-friendly interface, and technical support should also be taken into account to ensure optimal performance and reliability.

2. How does penetrability testing contribute to ensuring the quality and safety of medical devices?

Penetrability testing plays a critical role in evaluating the performance of materials used in medical devices, such as rubber stoppers and packaging materials. By accurately measuring puncture resistance, manufacturers can assess the integrity and reliability of these materials, ensuring they meet regulatory requirements and maintain product safety and efficacy.

3. What are the benefits of automated penetrability testing compared to manual testing methods?

Automated penetrability testing offers several advantages over manual testing methods, including increased testing efficiency, consistency, and accuracy. Automation eliminates the variability associated


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