ISO 29942:2011

Overview

ISO 29942:2011 - Prophylactic dams - Requirements and test methods - defines minimum requirements, sampling and test methods for prophylactic dams (polymer films used to cover the external female genitalia or anal area during sexual activity). The standard focuses on barrier performance to help prevent sexually transmitted infections (STIs), product safety (biocompatibility), physical integrity, packaging, labelling and shelf-life verification. It treats prophylactic dams as non‑sterile medical devices produced under a controlled quality system.

Key topics and technical requirements

• Scope and purpose: Requirements and test methods for prophylactic dams intended to reduce STI transmission.
• Design limits:
  • Length: 200 mm to 350 mm (sampled 13 dams/lot, Annex C).
  • Width: 150 mm to 250 mm (sampled 13 dams/lot, Annex C).
  • Thickness: mean ≤ 0.15 mm; individual readings must be between 75% and 125% of the mean (Annex D). For natural rubber latex, no reading < 0.04 mm.
• Barrier properties: For non-latex materials, viral penetration testing using a surrogate virus (e.g., bacteriophage phi-X174) is prescribed (Annex F).
• Mechanical and stability tests: Tensile and tear tests referenced (ISO 37, ISO 34-1), stability and ageing studies (real-time and accelerated - Annexes I and J; ISO 188).
• Defects and leakage: Testing for visible and non-visible holes (water leak tests, Annex K) and inspection for visible defects such as permanent creases.
• Quality verification and sampling: Lot-based sampling plans from ISO 2859-1 are used (Annexes A and B). Recommended maximum production lot size: 500 000.
• Biocompatibility and safety: Evaluation per ISO 10993 series; risk assessment per ISO 14971.
• Packaging, labelling and documentation: Requirements for individual containers, consumer packages, identification/lot numbers, expiry dates and data sheets.

Practical applications - who uses ISO 29942

• Manufacturers of prophylactic dams for product design, QC and to substantiate shelf-life claims.
• Test laboratories conducting barrier, mechanical and ageing tests.
• Regulatory authorities reviewing conformity, biocompatibility and stability data.
• Purchasers, NGOs and health programs procuring STI prevention products and requiring standardized acceptance testing.
• Design engineers and product managers developing barrier prophylactics and ensuring compliance with international best practice.

Related standards (key references)

• ISO 13485 - medical device quality management
• ISO 14971 - risk management for medical devices
• ISO 10993 series - biological evaluation (cytotoxicity, irritation, systemic toxicity)
• ISO 2859-1 / ISO/TR 8550 - sampling and inspection by attributes
• ISO 37, ISO 34-1, ISO 188 - mechanical and ageing test methods
• ISO 4074 - condom requirements (related barrier device standards)

Keywords: ISO 29942, prophylactic dams, barrier prophylactics, STI prevention, viral penetration test, shelf‑life, sampling plans, biocompatibility, medical device standards.