Lovibond Red, Yellow, Neutral (PFXi 995/950/880)

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Part Number 139630

A set of five glass conformance filters for checking PFXi instruments in Lovibond RYBN scale.


Conformance filters are assigned a nominal value and the company always endeavours to match this value as closely as possible. On occasion, because of the unique manner of the glass making process, it may not be possible to match the requested values exactly. The values achieved and the performance tolerances expected will, of course, always be reported.
Glass Standard Values Approximate Values
  • 0.5R 1.3Y 0.1N
  • 1.3R 3.3Y 0.5N
  • 2.5R 8.6Y 0.1N
  • 4.0R 22Y 0.1N
  • 7.1R 51Y 0.5N
Filters 5
Title Online Download Type Format Language Direct Download
Datasheet 139630 - Lovibond Red, Yellow, Neutral (PFXi 995/950/880) Datasheet PDF (0.20 MB)
  • Lovibond RYBN 0.5R 1.3Y 0.1N filter
  • Lovibond RYBN 1.3R 3.3Y 0.5N filter
  • Lovibond RYBN 2.5R 8.6Y 0.1N filter
  • Lovibond RYBN 4.0R 22Y 0.1N filter
  • Lovibond RYBN 7.1R 51Y 0.5N filter
  • Certificate of conformity