Was the instrument's measurement range appropriate for the reported signal?

Was the instrument's measurement range appropriate for the reported signal?

The company publishes no instrument, no range and no value, so no published range can be judged against a signal.

The polarity is a positive electric charge at rest, and it is measured as surface charge density, in nanocoulombs per square centimetre. The company publishes no measurement procedure, no instrument record and no uncertainty budget. The instrument, its range and its settings are not published, and no value is published against which a range could be judged. The company states no value and publishes no data set. The charge is measured on every production run, and the measurement can be repeated on any filter, upon request.

Source: Statement of Classification for the NanoFlashing™ Air Filter, sections 2.2 and 2.3, issued by NF Technical Products Inc.

Reviewed on 21 September 2026.