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Showing posts from December, 2024

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 pol...

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 paramete...

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...

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 co...

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 ...

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, aluminu...

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, rubbe...

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 t...