Testing Oxygen Permeability in Contact Lenses

For comfortable and healthy contact lens wear, oxygen must reach the cornea. Insufficient oxygen can cause discomfort, dryness, and potentially serious eye problems. This is why oxygen permeability testing is so important. It measures how much oxygen can pass through a contact lens material, ensuring adequate oxygen supply to the eye.

Various methods exist to measure oxygen permeability, each designed to accurately quantify a lens's ability to "breathe." This measurement is expressed as Dk/t, where D (Diffusivity) represents the rate at which oxygen moves through the material, and k (Solubility) indicates how much oxygen can dissolve within the material, t refers to the thickness of the lens. A higher Dk/t value signifies greater oxygen flow to the cornea, minimizing the risk of hypoxia (oxygen deficiency).

ISO 18369 provides a general framework and defines terms related to contact lenses, including oxygen permeability. It specifically outlines the procedures for both polarographic and coulometric methods. ISO 9913 focuses specifically on the coulometric method for measuring oxygen permeability. It provides detailed instructions on the equipment, calibration, and testing procedures.

Labthink C230H Oxygen Transmission Rate Test System is designed and manufactured based on the coulometric sensor method. This instrument can be used to measure the oxygen transmission rate of materials with high and medium barrier properties with high accuracy and high efficiency.

This testing is crucial for both manufacturers and wearers. It allows manufacturers to develop and refine lens materials that prioritize eye health. For wearers, it ensures they choose lenses that provide sufficient oxygen, promoting comfort and reducing the risk of complications.

As the demand for functional materials grows, testing methods are evolving to ensure a more comprehensive evaluation. Labthink encourages collaboration with packaging and materials industries companies for quality control! Visit the website www.labthink.com to learn more!

Testing the Pull Open Force of Milk Carton Ring Tabs

The simple act of opening a milk carton can sometimes be surprisingly frustrating. A poorly designed or manufactured pull tab can lead to broken fingernails, spills, and general annoyance. While seemingly trivial, this small detail can significantly impact consumer perception and satisfaction.

The ease of opening a milk carton hinges on the force required to pull the tab. Given the importance of safety, product integrity, and consumer satisfaction, it's highly recommended that manufacturers routinely test the pull force of the ring tabs.

• Consumer Safety: A tab that's too difficult to open can lead to strained fingers or the use of tools, which can also be dangerous.
• Product Integrity: The pull tab is part of the package’s hermetic seal, crucial for preserving the food inside. Testing ensures the seal remains intact until the intended opening.
• Convenience and Consumer Satisfaction: Consistent and reliable opening mechanisms are essential for customer satisfaction.

Key parameters measured during testing include:

• Initiation Force: The force required to begin the tear in the carton seal.
• Peak Force: The maximum force required to fully open the carton.
• Elongation: The distance the tab stretches before breaking or the seal fully opens.

Labthink C610H Auto Tensile Tester is a versatile instrument designed to measure the tensile, peeling, and tearing forces of films, composite materials, and package pull tabs. It can be configured with a variety of fixtures to accommodate different testing needs.

Testing the pull open force of milk carton ring tabs is a crucial aspect of quality control and product development. By employing appropriate testing methods and considering other relevant factors, manufacturers can ensure that their milk cartons are easy and convenient for consumers to open, leading to greater satisfaction and a positive brand experience.

As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!

Essential Tests for Biodegradable Packaging Materials

Biodegradable packaging is gaining traction as a sustainable alternative to traditional petroleum-based materials. However, ensuring their suitability for various applications requires rigorous testing.

Thorough testing of biodegradable packaging materials is paramount for several reasons. Firstly, it ensures product quality by maintaining freshness and extending shelf life by preventing the ingress of gases like oxygen and moisture. Secondly, it guarantees consumer safety by ensuring the integrity and safety of packaged goods. Thirdly, it plays a crucial role in minimizing environmental impact by verifying the material's actual biodegradability and reducing plastic pollution. Finally, it enhances market viability by demonstrating the material's suitability for specific applications and gaining consumer and industry acceptance.

Key tests for biodegradable packaging include:

 

• Gas Permeability: This assesses the material's ability to resist the passage of gases like oxygen and carbon dioxide. Labthink's VAC-V2 and C106H systems are suitable for these measurements, determining factors like gas transmission rates, solubility, and diffusion coefficients.
• Water Vapor Transmission Rate (WVTR): This evaluates the material's resistance to water vapor permeation. Labthink's C360 WVTR test system employs gravimetric method, C306H WVTR test system employs infrared sensor methods, to measure WVTR accurately. These tests are vital for packaging sensitive products like food and pharmaceuticals.
• Mechanical Properties: Assessing strength, flexibility, and other mechanical properties is crucial for ensuring package integrity during handling and transportation. Labthink's Auto Tensile Testers and thickness measurement instruments provide valuable data in this regard.

As the demand for sustainable packaging solutions grows, rigorous testing will play a pivotal role in driving innovation and ensuring the successful adoption of biodegradable materials. Labthink, with its comprehensive range of testing equipment and expertise, is well-positioned to support the industry in this crucial endeavor.

Testing Packaging Materials for Fresh Produce

Packaging plays a crucial role in maintaining the freshness and quality of fruits and vegetables. To ensure optimal performance, rigorous testing is essential to assess the suitability of packaging materials. By understanding the key qualities required and the specific tests involved, manufacturers can select the most appropriate materials to extend shelf life and reduce food waste.

Key Qualities of Ideal Packaging Materials

• Moisture Barrier: Prevents water loss, which can lead to dehydration and wilting.
• Gas Permeability: Allows for controlled gas exchange, preventing the buildup of ethylene gas (a ripening agent) and other harmful gases.
• Mechanical Protection: Protects the produce from physical damage during transportation and handling.
• Food Safety: Non-toxic, food-grade, and hygienic to ensure the safety of the produce.
• Sustainability: Recyclable or biodegradable to minimize environmental impact.

Essential Testing Procedures

To evaluate the suitability of packaging materials, a comprehensive range of tests is necessary:

Mechanical Properties:

• Tensile Strength: Measures the material's resistance to breaking under tension.
• Tear Strength: Evaluates the material's resistance to tearing.
• Puncture Resistance: Assesses the material's ability to withstand punctures.

Labthink C610M Auto Tensile Tester is a versatile tester applicable to testing tensile strength, peeling force, deformation, tearing, puncture force, pulling force and many other physical properties of various materials.

Barrier Properties:

• Water Vapor Transmission Rate (WVTR): Measures the rate at which water vapor passes through the material.
• Oxygen Transmission Rate (OTR): Measures the rate at which oxygen passes through the material.
• Carbon Dioxide Transmission Rate (CO2TR): Measures the rate at which carbon dioxide passes through the material.

Labthink C406H Oxygen and Water Vapor Transmission Rate Test System is based on the testing principle of Coulometric oxygen sensor and infrared water vapor sensor. It is designed and manufactured according to ASTM D3985、ASTM F1249，ISO 15106-2 and other relevant standards to provide high precision and high efficiency oxygen and water vapor transmission rate tests for high and medium gas barrier materials. It is suitable for testing the oxygen and water vapor transmission performance of films, sheets and related materials in the fields of food, medicine, medical devices, daily chemicals, photovoltaic, electronic and many others.

 

Other Properties:

Microbial Barrier: Evaluates the material's resistance to microbial growth.

Chemical Compatibility: Determines the material's compatibility with the food product and any other substances it may come into contact with.


C830H Migration & Non-volatile-matter Content Tester tests the potential migration from food contact packaging materials

By conducting these tests and considering the specific requirements of different fruits and vegetables, manufacturers can select the most suitable packaging materials to ensure optimal freshness, reduce food waste, and meet consumer expectations.

Non-Destructive Leak Testing- A Proactive Approach to Prevention

Non-Destructive Leak Testing (NDT Leak Testing) is a proactive approach to preventing product failures. By identifying potential leaks early on, manufacturers can take corrective action to ensure product integrity and reliability.

 Key Benefits of Early Detection:

• Product Quality: Early detection of leaks can help maintain product quality standards, preventing defects and ensuring optimal performance.
• Reduced Costs: By identifying and addressing issues before they escalate, NDT Leak Testing can save significant costs associated with product recalls, repairs, and replacements.

Industries Benefiting from NDT Leak Testing:

• Packaging: Detecting leaks in food, beverage, pharmaceutical, and cosmetic packaging can prevent product contamination, spoilage, and loss.
• Medical Device: Ensuring the integrity of medical devices is paramount for patient safety and effective treatment.
• Automotive: Detecting leaks in fuel tanks, radiators, and other components can improve vehicle performance, fuel efficiency, and environmental impact.

Common NDT Leak Testing Techniques for Packaging and Medical Device include:

• Pressure Decay Testing: Measures pressure changes over time to detect leaks.
• Vacuum Decay Testing: Measures vacuum decay over time to detect leaks.

Labthink C690H Nondestructive Package Leak Detector is based on the testing principle of the vacuum decay method, designed and manufactured according to ASTM F2338 and other standards. It is professionally suitable for batch sealing leak detection of vials, and trace leakage detection of ampoule, cartridge bottles, infusion bottles, prefilled syringes and other pharmaceutical packaging.

As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!

Keywords:
Non-Destructive Inspection (NDI) for Leaks,Non-Destructive Leak Detection,Non-Destructive Leak detector,Non-Destructive Leak tester,Non-Destructive Leak testing,Pressure Decay Testing,vacuum Decay Testing,preventing product failures,Detecting, leaks, food, beverage, pharmaceutical, cosmetic, packaging, prevent, contamination, spoilage, loss,Integrity, medical devices, patient safety, effective treatment

A Comprehensive Approach to Testing Fresh Food Packaging

Fresh food packaging is a delicate balance of protection, preservation, and consumer appeal.

To ensure product integrity and shelf life, rigorous testing is essential. Here are key areas to focus on:

Mechanical Properties

• Puncture Resistance: Evaluate the packaging's ability to withstand punctures, especially from sharp objects like bones.
• žFlex Durability: Assess the material's resistance to cracking or tearing when subjected to bending and flexing.
• žSeal Strength: Test the integrity of heat seals to prevent leaks and contamination.

Labthink C610M Auto Tensile Tester is professionally applicable to measurement of tensile, peeling, deformation, tearing, heat sealing, adhesive, puncture force, opening force, pulling force and low speed unwrapping force as well as other properties of plastic films, composite materials, soft package materials, plastic flexible tube, adhesives, adhesive tapes, label stickers, medical plasters, release paper, protective films, combined caps, aluminum foils, diaphragms, back sheets, non-woven fabrics, rubber and paper, etc.

Barrier Properties

• žOxygen Transmission Rate (OTR): Measure the rate at which oxygen permeates the packaging material.
• Water Vapor Transmission Rate (WVTR): Determine the rate at which water vapor passes through the packaging.

Labthink C406H Oxygen /Water Vapor Transmission Rate Test System is based on the testing principle of Coulometric oxygen sensor and infrared water vapor sensor. It is designed and manufactured according to ASTM D3985、ASTM F1249，ISO 15106-2 and other relevant standards to provide high precision and high efficiency oxygen and water vapor transmission rate tests for high and medium gas barrier materials. It is suitable for testing the oxygen and water vapor transmission performance of films, sheets and related materials in the fields of food, medicine, medical devices, daily chemicals, photovoltaic, electronic and many others.

By investing in comprehensive testing, manufacturers can ensure that their fresh food packaging delivers on its promise of protecting and preserving valuable products.

As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!

Key Quality Assurance Testing Parameters for Ampoule Bottles

Ampoule bottles, a common packaging solution for pharmaceuticals, demand stringent quality control to maintain product integrity and safety.

Key testing parameters for ampoule bottles commonly include breaking strength determination and headspace gas analysis.

Breaking Strength Determination

Breaking Strength is generally the tensile or compressive load required to fracture or to cause the sample to fail. For an ampoule bottles test, the max force of the bottles breaking is the break strength.

C610M Auto Tensile Tester is professionally applicable to measurement of tensile, peeling, deformation, tearing, heat sealing, adhesive, puncture force, opening force, pulling force and low speed unwrapping force as well as other properties of plastic films, composite materials, soft package materials, plastic flexible tube, adhesives, adhesive tapes, label stickers, medical plasters, release paper, protective films, combined caps, aluminum foils, diaphragms, back sheets, non-woven fabrics, rubber and paper, etc.

Headspace Gas Analysis

This test measures the oxygen and carbon dioxide in sealed package. By controlling the gas composition within the ampoule, manufacturers can significantly extend product lifespan and maintain quality.

Labthink C650M Headspace Gas Analyzer is featured with handheld design and equipped with high precision sensors and air pump supplied by globally well-known manufacturers. It can provide accurate and fast evaluation of the volume of oxygen and carbon dioxide (with optional CO2 sensor) in sealed packages, bottles and cans, etc. Because of its portable design, the instrument can be used to measure the volume and proportion of oxygen and carbon dioxide on production lines, in warehouses or in laboratories, to serve as a guide for production.

By combining breaking force determination and headspace gas analysis, manufacturers can ensure the quality, safety, and efficacy of pharmaceutical products packaged in ampoule bottles.

As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!

Tests for Laminated Pharmaceutical Packaging

To ensure the integrity and safety of pharmaceutical products, laminated films and pouches undergo rigorous testing.

Here are some critical test items, along with relevant standards, test methods, and instruments:

Barrier Properties:

• Water Vapor Transmission Rate (WVTR): Measures the rate at which water vapor passes through the material.
• Standards: ASTM E96, ISO 2528
• Test Instruments: Gravimetric and Coulometric methods
• Oxygen Transmission Rate (OTR): Measures the rate at which oxygen permeates the material.
• Standards: ASTM D3985, ISO 15105-2
• Test Instruments: Oxygen transmission rate analyzers
• Carbon Dioxide Transmission Rate (CO2TR): Measures the rate at which carbon dioxide permeates the material.
• Standards: ASTM D1434, ISO 15105-1
• Test Instruments: Gas transmission rate analyzers

Labthink C406H Oxygen /Water Vapor Transmission Rate Test System is based on the testing principle of Coulometric oxygen sensor and infrared water vapor sensor. It is designed and manufactured according to ASTM D3985、ASTM F1249，ISO 15106-2 and other relevant standards to provide high precision and high efficiency oxygen and water vapor transmission rate tests for high and medium gas barrier materials. It is suitable for testing the oxygen and water vapor transmission performance of films, sheets and related materials in the fields of food, medicine, medical devices, daily chemicals, photovoltaic, electronic and many others.

Mechanical Properties:

• Tensile Strength and Elongation: Measures the material's resistance to breaking under stress.
• Standards: ASTM D882, ISO 527
• Test Instruments: Tensile testing machines
• Tear Resistance: Measures the force required to initiate and propagate a tear in the material.
• Standards: ASTM D1922, ISO 6383
• Test Instruments: Tear testers
• Seal Strength: Measures the bond strength between layers of the laminate.
• Standards: ASTM F88
• Test Instruments: Seal strength testers
• Impact Resistance: Evaluates the material's ability to withstand impact forces.

By conducting these tests, manufacturers can ensure that laminated films and pouches provide adequate protection for pharmaceutical products, maintaining their quality and efficacy throughout their shelf life.

As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!