Overview
ISO 19699-2:2017 is an international standard that outlines the specifications for superabsorbent polymers (SAP) made from sodium polyacrylate resin specifically designed for absorbing blood. This standard sets essential requirements on the properties, marking, and packaging of the resin, both as a raw material and in its final form within blood-absorbent products. It applies to manufacturers and quality control organizations involved in producing SAP for medical and hygiene applications such as surgical dressings, sanitary pads, and tourniquets.
The standard is part of the ISO 19699 series, providing consistent quality assurance and performance benchmarks for sodium polyacrylate resins to ensure safety and effectiveness in absorbing blood.
Key Topics
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Property Requirements
The standard defines critical parameters for SAP including:
- Residual monomer content (max 1500 mg/kg)
- Volatile content (up to 10%)
- pH range (5.0 to 8.0)
- Particle size distribution to control resin granularity
- Bulk density specifications
- Simulated blood absorption capacity (minimum 15 g/g)
- Blood absorption rate (classified into Class I and II based on performance)
- Whiteness to indicate purity and quality
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Marking Requirements (optional)
Labels on SAP packaging should include:
- ISO 19699-2 reference
- SAP class (Class I or II)
- Manufacturer’s identification
- Net weight
- Manufacture and expiration dates, lot number
- Waterproof and moisture-proof marks
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Packaging Specifications
Packaging must prevent damage and moisture ingress during handling, transport, and storage. Bags should be tear-free with clear, legible markings to maintain product integrity.
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Test Methods Reference
The standard refers to related ISO test methods (ISO 17190 series and ISO 19699-1) to evaluate properties such as pH, residual monomer content, particle size, density, and absorption rate.
Applications
ISO 19699-2:2017 targets industries that manufacture superabsorbent polymers for use in medical and hygiene products, including:
- Medical supplies such as wound dressings, surgery coats, and tourniquets
- Personal hygiene products like sanitary towels and adult incontinence aids
- Emergency care and trauma management materials requiring reliable blood absorption
By adhering to these specifications, manufacturers can produce SAPs that ensure safety, efficacy, and compatibility with medical and personal care products, thereby improving product trust and user outcomes.
Related Standards
- ISO 19699-1:2017 – Test methods for sodium polyacrylate SAP absorbing blood
- ISO 17190 series – Test methods for characterizing polymer-based absorbent materials for incontinence, providing test procedures used in ISO 19699-2 for quality control
- ISO/IEC Directives – Guidelines for standard development and conformity assessment
- Other ISO standards in plastics and hygiene product categories
Summary
ISO 19699-2:2017 is a vital international standard for producers and users of sodium polyacrylate-based superabsorbent polymers designed for blood absorption. It ensures that materials meet rigorous quality levels regarding chemical composition, physical properties, and packaging, enhancing the performance and safety of SAP-based medical and hygiene products worldwide. Compliance facilitates trust, regulatory acceptance, and global market access for manufacturers in the SAP industry.