Botswana Imposes Fire Extinguisher Foam Standards

Botswana has introduced mandatory compliance standards for low-expansion and medium- to high-expansion foam concentrates used in fire suppression systems for water-miscible and water-immiscible liquids.

BOTSWANA – FIRE EXTINGUISHER FOAM

Botswana Sets New Standards for Firefighting Foam

Importers and manufacturers must align foam concentrates with international ISO specifications.

381300 Foam concentrates HS code

842410 Mechanical appliances HS code

842490 Parts HS code

What changed

Low-expansion foam standards must conform to BOS ISO 7203-3:2019 for water-miscible liquids.

Medium- and high-expansion foam must comply with BOS ISO 7203-2:2019 for water-immiscible liquids.

Product scope includes fire extinguishers and related equipment under specific HS codes.

Who it affects

Importers of fire safety equipment must ensure products meet the new ISO standards.

Domestic manufacturers must update formulations to align with BOS ISO specifications.

Botswana — fire extinguisher foam standards

Compliance Requirements for Foam Concentrates in Botswana’s Fire Suppression Systems

Botswana has established mandatory compliance standards for foam concentrates used in fire suppression systems, governed by two key regulations: BOS ISO 7203-3:2019 (low-expansion foam for water-miscible liquids) and BOS ISO 7203-2:2019 (medium- and high-expansion foam for water-immiscible liquids). These standards specify essential properties, performance criteria, and application methods to ensure safety, efficacy, and trade harmonization^{1, 2}.

Regulation Analysis

Regulation	Key Requirement	Deadline/Threshold	Authority
BOS ISO 7203-3:2019	Specifies essential properties and minimum performance for low-expansion foam concentrates used to extinguish fires of water-miscible liquids (e.g., alcohols, ketones). Foams must control, extinguish, and inhibit re-ignition¹. Compliance with ISO 7203-1 extends suitability to water-immiscible liquids¹.	Entry into force: 12 months post-publication (date TBD)¹.	Botswana Bureau of Standards (BOBS)¹.
BOS ISO 7203-2:2019	Defines requirements for medium- and high-expansion foam concentrates for water-immiscible liquids (e.g., hydrocarbons). Includes performance tests for control, extinction, and re-ignition inhibition². Foams compliant with ISO 7203-1 may also apply to water-immiscible liquids².	Entry into force: 12 months post-publication (date TBD)².	Botswana Bureau of Standards (BOBS)².

Detailed Requirements

1. BOS ISO 7203-3:2019 (Low-Expansion Foam for Water-Miscible Liquids)

Scope: Applies to foam concentrates used in top application for fires involving water-miscible liquids (e.g., polar solvents). Foams may also be used in non-aspirating sprayers or subsurface applications, but these are not covered by this standard¹.
Performance Criteria:
- Must meet minimum performance thresholds in test fires for control, extinction, and re-ignition inhibition¹.
- Foams compliant with ISO 7203-1 are also suitable for water-immiscible liquids¹.
Testing Standards:
- Viscosity: ISO 3104:2023¹.
- Rheological properties: ISO 3219:1993¹.
- Sieve analysis: ISO 3310-1:2016¹.
Exclusions: Does not address requirements for subsurface or non-aspirating applications¹.

2. BOS ISO 7203-2:2019 (Medium- and High-Expansion Foam for Water-Immissible Liquids)

Scope: Covers foam concentrates for top application to fires of water-immiscible liquids (e.g., petroleum products). Includes medium-expansion (20:1 to 200:1) and high-expansion (>200:1) foams².
Performance Criteria:
- Must demonstrate efficacy in test fires for control, extinction, and re-ignition inhibition².
- Foams compliant with ISO 7203-1 may also be used for water-immiscible liquids².
Testing Standards:
- Surface tension: ISO 304:1985².
- Viscosity: ISO 3104:2023².
- Rheological properties: ISO 3219:1993².
- Sieve analysis: ISO 3310-1:2016².

Compliance Process and Timelines

Adoption and Enforcement:
- Both standards are notified under WTO-TBT Article 2.9.2 and will enter into force 12 months after publication (exact date pending)^{1, 2}.
- Stakeholders may submit comments to the Botswana Bureau of Standards (BOBS) until 3 January 2026^{1, 2}.
Authority:
- BOBS is the responsible agency for enforcement, inquiries, and comment submissions^{1, 2}.
- Contact: Nametso Moilwa (Senior Documentation and Information Officer) at `enquiries@bobstandards.bw` or `moilwa@bobstandards.bw`^{1, 2}.
Access to Standards:
- Copies of BOS ISO 7203-2:2019 (41 pages) and BOS ISO 7203-3:2019 (39 pages) can be requested from `affiliates@iso.ch` or BOBS^{1, 2}.

Summary Answer

Botswana’s mandatory compliance standards for foam concentrates are divided into two regulations: BOS ISO 7203-3:2019 (low-expansion foam for water-miscible liquids) and BOS ISO 7203-2:2019 (medium- and high-expansion foam for water-immiscible liquids). Both standards specify essential properties, performance tests, and application methods, with entry into force scheduled 12 months post-publication^{1, 2}. Compliance is enforced by the Botswana Bureau of Standards (BOBS), which also handles stakeholder comments until 3 January 2026^{1, 2}. Testing requirements align with international standards (e.g., ISO 3104, ISO 3219) to ensure safety and trade harmonization^{1, 2}.

Sources

↩ BOS ISO 7203-3:2019 Fire extinguishing media — Foam concentrates- Part 3: Specification for low-expansion foam concentrates for top application to water-miscible liquids https://docs.wto.org/imrd/directdoc.asp?DDFDocuments/T/G/TBTN25/BWA208.DOCX
↩ BOS ISO 7203-2:2019 Fire extinguishing media — Foam concentrates-Part 2: Specification for medium- and high-expansion foam concentrates for top application to water-immiscible liquids https://docs.wto.org/imrd/directdoc.asp?DDFDocuments/T/G/TBTN25/BWA209.DOCX