Overview
EN ISO 9665:2000 specifies standardized methods for sampling and testing animal glues, particularly derived from bone and skin, in various forms such as powder, granules, pearls, or cubes. Developed by the European Committee for Standardization (CEN) and harmonized with ISO 9665:1998, this standard outlines procedures to ensure accurate representation and assessment of animal glue properties for industrial and commercial uses. Key testing methods include determining moisture content, gel strength, viscosity, softening point, setting point, foam behavior, pH, and grease content.
By establishing consistent sampling and testing protocols, EN ISO 9665:2000 aids manufacturers, suppliers, and consumers in evaluating glue quality, ensuring compliance, and facilitating fair trade in the adhesives industry.
Key Topics
- Sampling Procedures: Guidance on obtaining representative samples from various container sizes and types, using appropriate tools such as sampling tubes or scoops, and storing samples under controlled moisture conditions.
- Moisture Content: Detailed procedures for measuring the percentage of moisture in glue samples, including sample preparation, oven-drying, and result calculation.
- Gel Strength: Methods for determining the rigidity of a glue gel using standardized instruments and reporting values in newtons or Bloom grams.
- Viscosity Measurement: Two recognized approaches-glass-capillary viscometer (aligned with ISO 3105) and American pipette method-evaluating glue flow characteristics at defined concentrations and temperatures.
- Softening & Setting Points: Standardized processes to measure temperatures at which glue transitions from solid to soft (softening point) and from liquid to solid (setting point).
- Foam Assessment: Laboratory procedures to quantify the foaming tendency and stability, which are relevant for machine application.
- pH and Grease Content: Instructions for precise pH measurement and amount of grease, both critical for quality and compatibility in adhesives formulation.
- Reporting Requirements: Mandatory inclusion of sampling details, testing methods, instruments used, and environmental factors in all test reports.
Applications
EN ISO 9665:2000 is vital for several industries and scenarios, including:
- Quality Control: Manufacturers use these methods to guarantee batch-to-batch consistency and ensure glue meets quality benchmarks before distribution.
- Procurement & Trade: Buyers and sellers apply these standardized tests to resolve disputes, confirm product specifications, and ensure contractual compliance.
- Product Development: R&D teams reference these tests to optimize formulation for specific applications, such as woodworking, bookbinding, or restoration.
- Compliance & Certification: Regulatory agencies and certification bodies use these protocols to verify adherence to industry regulations for adhesives.
- Comparative Evaluation: Organizations and testing labs utilize these methods to compare glues from different sources or to benchmark against reference materials.
Related Standards
- ISO 3105: Glass capillary kinematic viscometers - Specifications and operating instructions - essential for viscosity determination.
- ISO 4788: Laboratory glassware - Graduated measuring cylinders - referenced in foam testing.
- ISO 3951: Sampling procedures and charts for inspection by variables - useful for designing sampling plans.
- ISO 8213: Chemical products for industrial use - Sampling techniques - applicable to various forms of solid chemicals.
- ISO 5725-1: Accuracy (trueness and precision) of measurement methods and results - guidelines on precision and reliability of test results.
Keywords: animal glues, adhesives, EN ISO 9665, glue testing methods, standardized sampling, gel strength, viscosity measurement, quality control, adhesive properties, CEN, industrial adhesives.