The draft document introduces the higher performance requirements, a 97% efficiency requirement for PN, and transitional provisions.

The [5%] figure for correlation if two instruments are used simultaneously for assessment of PN efficiency was agreed.

There was a discussion on the requirement for a [6-month] period (after the entry into force of the 01 standard) before Contracting Parties can refuse placing on the market of devices to the 00 standard (paragraph 16.3.). The EC and Member States wish to avoid a period where they have to accept such devices. The possibility of deleting this clause or setting a shorter time will be discussed with the UN secretariat.

The paragraph on reversal of filter elements, discussed earlier, will now be added to the draft text. There was a further discussion as to whether this requirement should also be included as an amendment to the 00 series, but it was not felt to be necessary.