Analysis of Aqueous Extractable Protein in Elastomers & Rubber Products
Analyzing aqueous extractable proteins in elastomers is essential to ensure their quality and safety. The method for protein analysis depends on sensitivity, specificity, sample complexity, and tool availability. ELISA, SDS-PAGE, and mass spectrometry are common techniques, each with pros and cons. Selecting the best method requires considering these criteria.
TRUSTED BY
Precision-driven testing for dimensional accuracy and compliance
- Overview
- Scope, Applications, and Benefits
- Test Process
- Specifications
- Instrumentation
- Results and Deliverables
Overview
Analysis of aqueous-extractable protein in elastomers is used to determine the amount of water-soluble protein present in rubber- and latex-based materials. The test evaluates protein content that may leach out when exposed to aqueous environments, which is critical for applications involving skin contact or medical use.
This test is widely used for natural rubber products such as gloves, catheters, and other elastomeric components. It helps assess potential allergenic risks, ensure product safety, and support compliance with industry and regulatory requirements.
Scope, Applications, and Benefits
Scope
This test evaluates the concentration of extractable proteins in elastomeric materials by extracting soluble proteins into an aqueous solution and quantifying them using analytical techniques. The method helps determine the potential for protein-related allergic reactions.
The test evaluates:
- Amount of water-extractable proteins in elastomers
- Potential allergenic protein content
- Effectiveness of washing or processing treatments
- Consistency of elastomer production
- Safety of materials for sensitive applications
Applications
- Natural rubber latex gloves
- Medical and surgical devices
- Elastomeric tubing and seals
- Consumer rubber products
- Healthcare and pharmaceutical materials
- Quality control in rubber manufacturing
Benefits
- Helps assess allergenic risk in rubber products
- Supports compliance with safety regulations
- Enables comparison of protein levels across materials
- Assists in improving processing and washing methods
- Ensures product safety for end users
Test Process
Sample Preparation
Elastomer samples are cut, cleaned, and prepared for extraction.
1Protein Extraction
Samples are immersed in aqueous solution under controlled conditions to extract soluble proteins.
2Protein Quantification
Extracted proteins are measured using colorimetric or spectroscopic methods.
3Data Recording & Evaluation
Protein concentration is calculated and evaluated against specified limits.
4Technical Specifications
| Parameter | Details |
|---|---|
| Applicable Materials | Natural rubber and latex-based elastomers |
| Extraction Medium | Deionized water or buffer solution |
| Extraction Temperature | 23°C to 37°C |
| Extraction Time | 1 to 2 hours |
| Detection Method | Modified Lowry or Bradford method |
| Measured Outputs | Protein content (µg/g or µg/dm²) |
Instrumentation Used for Testing
- Water bath or incubator
- Spectrophotometer or colorimeter
- Analytical balance
- Sample preparation tools
- Pipettes and laboratory glassware
- Data acquisition and analysis system
Results and Deliverables
- Extractable protein concentration values
- Allergen risk assessment data
- Process effectiveness evaluation
- Comparative material analysis
- Test condition summary
- ASTM compliance report
Why choose Infinita Lab for aqueous extract analysis?
At the core of this breadth is our network of 2,000+ accredited labs in the USA, offering access to over 10,000 test types. From advanced metrology (SEM, TEM, RBS, XPS) to mechanical, dielectric, environmental, and standardized ASTM/ISO testing, we give clients unmatched flexibility, specialization, and scale. You’re not limited by geography, facility, or methodology—Infinita connects you to the right testing, every time.
Looking for a trusted partner to achieve your research goals? Schedule a meeting with us, send us a request, or call us at (888) 878-3090 to learn more about our services and how we can support you. Request a Quote
Frequently Asked Questions
Aqueous extractable protein analysis includes extraction temperature, time, solvent composition, sample mass, and analytical method sensitivity, determining protein levels released from elastomers under controlled aqueous conditions for safety evaluation and quality control.
Protein analysis is important because extractable proteins in elastomers, especially natural rubber, can cause allergic reactions, making testing essential for ensuring safety of medical devices and consumer products.
Protein analysis commonly uses colorimetric assays such as Lowry or Bradford methods, enzyme-linked immunosorbent assays, and spectrophotometric techniques to quantify protein content.
Materials include natural rubber latex products, gloves, catheters, balloons, and other elastomer-based medical and consumer items where protein content must be controlled.
Protein analysis results may vary due to extraction conditions, assay sensitivity, and sample variability, requiring standardized procedures and careful interpretation to ensure reliable and reproducible measurements.
Request a Quote
Submit your material details and receive testing procedures, pricing, and turnaround time within 24 hours.
Quick Turnaround and Hasslefree process
Confidentiality Guarantee
Free, No-obligation Consultation
100% Customer Satisfaction
