541. BS 8468-3.1. Respiratory protective devices for use against chemical, biological, radiological and nuclear (CBRN) agents. Part 3.1. Self-contained open-circuit compressed air breathing apparatus incorporating a hood for escape. Specification (3rd December 2019) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (10 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
542. BS 8468-2. Respiratory protective devices for use against chemical, biological, radiological and nuclear (CBRN) agents. Part 2. Negative pressure, air purifying devices with full face mask. Specification (3rd December 2019) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (21 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
543. Information technology. Process assessment. Process measurement framework for assessment of process capability. (27th November 2019) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (52 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
544. BS EN ISO 3452-2. Non-destructive testing. Penetrant testing. Part 2. Testing of penetrant materials (13th December 2019) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (32 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
545. Electrical equipment used for detection and concentration measurement of refrigerant gases. Performance requirements and test methods. (8th January 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (24 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
546. BS EN 60335-2-30 AMD2. Household and similar electrical appliances. Safety. Part 2-30. Particular requirements for room heaters (18th November 2019) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (6 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
547. BS ISO 4948. Classification of steel based on chemical composition. (14th November 2019) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (13 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
548. Ventilation for buildings. Air handling units. Rating and performance for units, components and sections. (17th December 2019) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (76 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
549. Gas appliances. Combined heat and power appliance of nominal heat input inferior or equal to 70 kW. (10th December 2019) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (188 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
550. BS EN 497. Specification for dedicated liquefied petroleum gas appliances. Multi purpose boiling burners for outdoor use. (9th December 2019) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (48 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗