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GB 15308-2025: Foam extinguishing agent Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB 15308: Historical versions
Similar standardsGB 15308-2025: Foam extinguishing agent---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB15308-2025GB NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA ICS 13.220.10 CCS C 84 Replacing GB 15308-2006 Foam extinguishing agent 泡 沫 灭 火 剂 Issued on: AUGUST 1, 2025 Implemented on: AUGUST 1, 2026 Issued by. State Administration for Market Regulation; Standardization Administration of PRC. Table of ContentsForeword... 4 1 Scope... 6 2 Normative references... 6 3 Terms and definitions... 7 4 Classifications, codes and model specifications... 9 4.1 Classifications and codes... 9 4.2 Model specifications... 9 5 Requirements... 10 5.1 General requirements... 10 5.2 Technical requirements... 10 6 Test methods... 14 6.1 Sampling and temperature treatment... 14 6.2 Freezing point... 15 6.3 Freeze and thaw resistance... 16 6.4 Sediment... 16 6.5 Viscosity... 17 6.6 pH... 18 6.7 Surface tension, interfacial tension, and spreading coefficient... 19 6.8 Expansion and 25% drainage time of low-expansion foam concentrates... 20 6.9 Expansions of medium and high expansion foam concentrates... 24 6.10 Fire extinguishing performance... 29 7 Inspection rules... 37 7.1 Batches and groups... 37 7.2 Sampling... 37 7.3 Factory inspection... 37 7.4 Type inspection... 37 7.5 Determination of test results... 38 8 Packaging, transportation, marking, storage, and instructions for use... 38 8.1 Packaging and transportation... 38 8.2 Marking... 38 8.3 Storage... 39 8.4 Instruction for use... 39 Foam extinguishing agent1 ScopeThis document defines the terms and definitions of foam extinguishing agents, stipulates the classification, code and model specifications, requirements, inspection rules, as well as packaging, transportation, marking, storage, and instructions for use, and describes the corresponding test methods. This document applies to the research and development, production and inspection of foam extinguishing agent products.2 Normative referencesThe provisions of the following documents constitute the essential clauses of this document through normative references in this text. Among them, for any dated reference, only the version corresponding to that date applies to this document; for any undated reference, the latest version (including all amendments) applies to this document. GB/T 6003.1 Test sieves - Technical requirements and testing - Part 1.Test sieves of metal wire cloth GB/T 6026 Acetone for industrial use GB/T 6682 Water for analytical laboratory use - Specification and test methods GB/T 9969 General principles for preparation of instructions for use of industrial products GB/T 21059 Plastics - polymers/resins in the liquid state or as emulsions or dispersions - Determination of viscosity using a rotational viscometer with defined shear rate GB/T 30515 Petroleum products - Transparent and opaque liquid - Determination of kinematic viscosity and calculation of dynamic viscosity GB/T 36911 Guidelines for transport package3 Terms and definitionsThe following terms and definitions apply to this document. 3.1 characteristic values The physical and chemical performance valves of the foam concentrate and the foam solution that are provided by the manufacturer. 3.2 25% drainage time The time required to separate the liquid equivalent to 25% of the foam mass from the foam. 3.3 expansion The ratio of the volume of foam to the volume of the foam solution that constitutes the foam. 3.4 low expansion foam concentrate Foam concentrate with an expansion of 1~20. 3.5 medium expansion foam concentrate Foam concentrate with an expansion of 21~200. 3.6 high expansion foam concentrate Foam concentrate with an expansion greater than 200. 3.7 foam A collection of air-filled bubbles formed from a foam solution. NOTE. Foam is also called fire-fighting foam. 3.8 foam concentrate A concentrated liquid that forms a foam solution when mixed with water at an appropriate concentration. NOTE. Foam concentrate is also called foam concentrate liquid. 3.9 foam solution A solution made of foam concentrate and water at a specified concentration. 3.19 spreading coefficient A measure of the ability of one liquid to spread freely on the surface of another liquid. 3.20 lowest temperature for use The temperature that is 5 °C above the freezing point.4 Classifications, codes and model specifications4.1 Classifications and codes The main classifications and codes of foam concentrates are shown in Table 1. 4.2 Model specifications The method for compiling the model specifications of foam extinguishing agents is as follows. EXAMPLE 1.3% (P, -10 °C) means a protein foam extinguishing agent with a mixing ratio of 3%, a freezing point of -10 °C, and is suitable for fresh water. EXAMPLE 2.6% (AFFF, -15 °C)-Seawater resistant means an aqueous film-forming foam extinguishing agent with a mixing ratio of 6%, a freezing point of -15 °C, and is suitable for both fresh water and seawater.5 Requirements5.1 General requirements 5.1.1 If the foam concentrate is suitable for use with seawater, the concentration of the foam solution prepared with seawater shall be the same as that prepared with fresh water. 5.1.2 The raw materials and production process of the foam concentrate shall meet the requirements of human health, safety and environmental protection. 5.1.3 Foam concentrates of different model specifications or produced by different processes shall not be mixed when filling fire extinguishers, fire trucks and fire extinguishing systems are filled or when fire extinguishing equipment is repaired. 5.2 Technical requirements 5.2.1 Low expansion foam concentrate 5.2.1.1 The physical and chemical properties of low expansion foam concentrate or foam solution shall comply with the requirements of Table 2.6 Test methods6.1 Sampling and temperature treatment 6.1.1 Sampling Whether sampling from one container or from multiple containers, stir thoroughly. Fill the storage container with the sample and seal it. 6.1.2 Temperature treatment The foam concentrate shall be temperature-treated according to the following steps. a) If the manufacturer declares that the sample is not affected by freeze-thaw, the sample shall first be subjected to four freeze-thaw cycles according to 6.3, and then processed according to 6.1.2b); b) Place the sample sealed in the container in an environment at (60±2) °C for 7 days, and then place it in an environment at (20±5) °C for 1 day; c) If the manufacturer declares that the sample is subject to freeze-thaw, only process the sample according to 6.1.2b). 6.2 Freezing point 6.2.1 Instruments and equipment Test instruments and equipment shall meet the following requirements. a) Freezing point test equipment. with a temperature control accuracy of ±1 °C; b) Platinum resistor. T100, with an accuracy of ±0.1 °C and an outer diameter of 5.0 mm; c) Digital temperature display instrument. The resolution is 0.1 ℃. 6.2.2 Test steps The freezing point test for the foam concentrate shall be carried out according to the following steps. a) Turn on the freezing point test equipment and stabilize the temperature of the cold chamber at (10±1) °C below the freezing point of the sample; b) Inject the sample into the dry, clean inner tube so that the liquid level is approximately 50 mm; c) Use a cork or rubber stopper to fix the platinum resistor in the center of the inner tube, with the lower end of the platinum resistor 10 mm away from the sample liquid surface; d) Place the inner tube containing the sample into the outer tube, with the distance from the bottom of the inner tube to the bottom of the outer tube not exceeding 10 mm. Then place the outer tube into the cold chamber, with the depth of the outer tube in the cold chamber not less than 100 mm. e) Start the test, and the equipment automatically records the temperature-time curve; f) When the sample is completely frozen, read the temperature at the platform of the curve as the freezing point; g) Repeat the test and take the higher value of the two test results with a difference of no more than 1 °C as the measurement result. 6.3 Freeze and thaw resistance 6.3.1 Instruments and equipment Low-temperature box. It can meet the temperature requirements of 6.3.2b). 6.3.2 Test steps The foam concentrate shall be tested for freeze and thaw resistance properties according to the following steps. a) Determine the freezing point of the sample according to 6.2.2; b) Adjust the temperature of the low-temperature box to (10±1) °C below the freezing point of the sample; c) Place the sample that meets the requirements of 6.1.1 into a plastic or glass container, seal it, and place it in a low-temperature box. Keep it at the temperature specified in 6.3.2b) for 24 hours. After freezing, remove the sample and place it at a room temperature of (20±5) °C for (24~96) hours. Repeat this process three more times, for a total of four freeze-thaw cycles. d) Observe the sample for stratification and heterogeneity. 6.4 Sediment 6.4.1 Instruments and equipment Test instruments and equipment shall meet the following requirements. a) Electric centrifuge. The centrifugal acceleration is (6000±600) m/s2; b) Graduated centrifuge test tube. with a capacity of 50 mL and a minimum graduation value of 0.1 mL; c) Sieve. It is in accordance with the requirements of GB/T 6003.1, with a pore size of 180 μm; d) Electric blast drying oven. with a temperature control accuracy of ±2 °C; e) Stopwatch. with a graduation value of 0.1 seconds. 6.4.2 Sampling Take two samples, one is tested directly and the other is tested after aging and cooling. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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