1. BS EN 12926:2016 Chemicals used for treatment of water intended for human consumption - Sodium peroxodisulfate

2. BS EN 12931:2015 Chemicals used for treatment of water intended for human consumption - Chemicals for emergency use - Sodium dichloroisocyanurate, anhydrous

3. BS EN 12932:2015 Chemicals used for treatment of water intended for human consumption - Chemicals for emergency use - Sodium dichloroisocyanurate, dihydrate

4. BS EN 12933:2015 Chemicals used for treatment of water intended for human consumption - Chemicals for emergency use - Trichloroisocyanuric acid

5. BS EN 12939:2001 Thermal performance of building materials and products - Determination of thermal resistance by means of guarded hot plate and heat flow meter methods

6. BS EN 12941:1999 Respiratory protective devices - Powered filtering devices incorporating a helmet or a hood - Requirements, testing, marking

7. BS EN 12942:1998+A2:2008 Respiratory protective devices - Power assisted filtering devices incorporating full face masks,half masks or quarter masks - Requirements, testing, marking

8. BS EN 12945:2014 Living materials - Determination of neutralizing value - Trimetric methods

9. BS EN 12946:2000 Liming materials - Determination of calcium content and magnesium content - Complexometric method

10. BS EN 12947:2000 Liming materials - Determination of magnesium content - Atomic absorption spectrometric method