No. IKEA fire extinguishers do not have a BENOR label.
If a fire extinguisher does not bear a BENOR label, this doesn't necessarily mean that it is inferior. However, in a professional context, the use of BENOR-labelled fire extinguishers is almost always requested. This is why department stores that sell fire extinguishers themselves, such as IKEA, often do not use their own fire extinguishers.
Make sure you check your fire insurance!