Why we don’t test certain H class equipment including some NPUs

If the manufacturer does not supply DOP tests at the source, we cannot legally approve the equipment. Simply put, we would be breaking the law.

The equipment we are happy to test and know has been approved includes

AMS, SMH, Beacon, Numatic. Kerstar and DeConta. H13 (99.97% efficiency) filtration is a first-stage filtration system that should be followed up with an H14 filtration system (99.995% efficiency)

A lot of supposed H class vacuums do not qualify because they pass air (contaminated) over the motor. Thus we will not be able to test the device as we could get positive readings or worse send your equipment back knowing that it is not fit for purpose.

I strongly suggest that you purchase a copy of the standard, which will confirm the suitability of your equipment. The Health and Safety at Work Act 2015 sections 39, 41, 42 and 48 spells out obligations of suppliers, manufacturers, importers and designers of plant, machinery and structures.

Finally, in criminal law, you need to prove intent to commit a crime.

IAW the HASW act  2015, no intent is needed. This means you cannot use ignorance as a defence against prosecutions.