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Wastewater treatment plants - Lagooning processes. Original standard UNE-EN 12255-5-2024 in PDF full version. Additional info + preview on request

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Wastewater treatment plants Part 6: Activated sludge process. Original standard UNE-EN 12255-6-2024 in PDF full version. Additional info + preview on request

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Wastewater treatment plants Part 8: Sludge treatment and storage. Original standard UNE-EN 12255-8-2025 in PDF full version. Additional info + preview on request

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Wastewater treatment plants Part 9: Odour control and ventilation. Original standard UNE-EN 12255-9-2024 in PDF full version. Additional info + preview on request

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Fixed firefighting systems - Components for sprinkler and water spray systems Part 12: Pumps. Original standard UNE-EN 12259-12-2024 in PDF full version. Additional info + preview on request

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Fixed firefighting systems. Components for sprinkler and water spray systems. Spray pattern sprinklers with a k-factor of at least K160, extended coverage sprinklers of at least K80 and control mode special application sprinklers. Original standard UNE-EN 12259-15-2025 in PDF full version. Additional info + preview on request

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