You should get approximately 5 compliance checks to 5 different units out of 1 vial of reference dust. We recommend this because the longer you keep the reference dust in the asperator (or spray bottle), the higher the chance that moisture will get in and cause the dust to merge, which will cause your device to not monitor for the correct size dusts.

We recommend that a compliance check is carried out every 3 months. However, in activities where your unit is exposed to extremely high levels of dust, this should be done more frequently to ensure your device is working as required.

The sensor is expecting a range of dust particles between 0.3 and 40ug during this test, when the dust sample is applied the laser will size the dust particles and organise them in to the correct bins and then analyse the data, if all bins are filled this confirms the laser is working across the complete range and the unit will confirm this with a ‘PASS’ indication.

In the event that your device fails its compliance check, we recommend you that you run a sensor cleaning operation as highlighted in ‘Compliance check’ section of the user manual.

You’ll get enough reference dust to carry out a compliance test for an entire year. You’ll get

• 1 x base station that the device sits in
• 1 x hood with a hole for the dust particles to be sprayed through
• 4 x vials of reference dust which contains different sized particles
• 4 x asperators (or spray bottles)

Carrying out a compliance check to your device tests that your it’s monitoring for the correct size dust particles. This means that when your device is in use, you know that it’s monitoring for all
particulates ranging from PM1 to PM10.

• 1 x base station that the device sits in
• 1 x hood with a hole for the dust particles to be sprayed through
• 4 x vials of reference dust which contains different sized particles (enough reference dust to carry out a compliance test for an entire year)
• 4 x asperators (or spray bottles)