Products used for treatment of water intended for human consumption. Iron (III) hydroxide oxide not-eligible BS EN ISO 1456 does

BS EN ISO 1456 does not specify the surface condition required by the basis metal prior to the coating process

Cast iron materials can be designated either by symbols or by numbers for all grades

What is BS 3947:1976

BS EN 4540 specifies the required characteristics

stress relief

Products used for treatment of water intended for human consumption. Iron (III) hydroxide oxide not-eligible BS EN ISO 1456 does1 Scope This European Standard is applicable to iron (III) hydroxide oxide used for the treatment of water intended for human consumption. It describes the characteristics of iron (III) hydroxide oxide and specifies the requirements and the corresponding test methods for iron (III) hydroxide oxide. It gives information on its use in water treatment.