User blog comment:Fredy-san/New Armor infobox and more planned stuffs (again?)/@comment-25739940-20141217201432/@comment-25739940-20141217202921

I think 'Chemical' is correct, since that's what SAS4 classifies the damage type as, and says that is what poison-limb zombies are resistant to.

For 'armor/armour' SAS 4 spells it 'armor', and yah, I think the Wiki mainly uses American English.