MCU14/0056 Response to SARA - Consulting Report

EN 858-1:2002 (E)

— Melt mass-flow rate, under a nominal load of 50 N and at a temperature of 190 °C, shall be between 0,3 9/10
min and 1,0 g/10 min, measured in accordance with ISO 1133.

Polyethylene for injection moulding:
— Density shall not be less than 945 kg/m* when measured in accordance with ISO 4183, 5

— Melt mass-fiow rate, under a nominal load of 50 N and at a temperature of 190 °C, shall be between 0,3 g/10
min and 1,0 g/10 min, measured in accordance with ISO 1133.

Polyethylene for buttweld-sheet assembly:
— Density shall not be tess than 950 kg/m? when measured in accordance with ISO 1183.

— Melt mass-flow rate, under a nominal load of 50 N and at a temperature of 190 °C, shall be between 0,3 g/10
min and 1,0 g/10 min, measured in accordance with ISO 1133.

2) Additional requirements
Tensile strength:

— The tensile properties, when determined in accordance with ISO 527-2 (using a testing speed of 100 mm/min)
shall be as follows:

Polyethylene for rotational moulding:

— Tensile stress at yield shall be greater than 15 MPa.

— Tensile strain at yield shall be less than 25 %.

— Tensile strain at break shall be greater than 200 %.

Polyethylene for blow moulding, injection moulding and buttweld-sheet assembly:
— Tensile stress at yield shall be greater than 21 MPa.

— Tensile strain at yield shall be less than 25 %.

— Tensile strain at break shall be greater than 200 %.

UV. stability:

— F) When exposed to U.V. radiation of 3,5 GJ/ (m?-a) in accordance with ISO 877, the mechanical properties
shall not decrease more than 50 %.

6.2.5 Sealing materials

For separator systems, only elastomers (rubber) or permanent elastic sealing materials shall be used. Cement
mortar and similar sealing cements or compounds shall not be used.

Rubber seals shat! comply with the requirements of EN 681-1, type WC, and their hardness for joints shall not be
less than 40 IRHD in accordance with ISO 48.

Elastomeric seals in continuous contact with wastewater and/or fight liquid shall comply with the requirements of
EN 682, Type GB.

40 This is a licensed reproduction produced by SAI Global Ltd, an authorized distributor of British Standards