4.1.1.21.1

scope

for polyethylene packagings as specified in 6.1.5.2.6, and for polyethylene ibcs as specified in

6.5.6.3.5, the chemical compatibility with filling substances may be verified by assimilation to

standard liquids following the procedures, as set out in 4.1.1.21.3 to 4.1.1.21.5 and using the list in

table 4.1.1.21.6, provided that the particular design types have been tested with these standard liquids

in accordance with 6.1.5 or 6.5.6, taking into account 6.1.6 and that the conditions in 4.1.1.21.2 are

met. when assimilation in accordance with this sub-section is not possible, the chemical compatibility

needs to be verified by design type testing in accordance with 6.1.5.2.5 or by laboratory tests in

accordance with 6.1.5.2.7 for packagings, and in accordance with 6.5.6.3.3 or 6.5.6.3.6 for ibcs,

respectively.

note: irrespective of the provisions of this sub-section, the use of packagings, including ibcs,

for a specific filling substance is subject to the limitations of table a of chapter 3.2, and the packing

instructions in chapter 4.1.