M550N System for measuring the colours of NATO paints and fabrics

The M550N system comprises a special version of the M550 computer controlled double beam scanning spectrophotometer with an integrating sphere accessory installed. Instead of scanning from 190nm to 1100nm, the M550N scans from 350nm to 1200nm.

A white standard and a black standard enable the reflectance values of the sample to be accurately determined over the wavelength range. The PC software displays the reflectance spectrum together with upper and lower NATO specification limits.

Specification of M550N system with sphere installed:

• Light source: Tungsten-Halogen
• Wavelength range: 350 to 1200nm
• Angular divergence of beam: < ± 5º
• Beam area at sample: 10 x 10mm
• Bandpass: 4nm
• Wavelength accuracy: ± 0.5nm
• Transmittance accuracy: 20%T ± 0.3, 10%T ± 0.2, 2%T ± 0.1
• Wavelength calibration: Checked using Didymium filter at 807.1nm traceable to NPL
• Reflectance calibration: Using white and black standards traceable to NIST

Range by Model

Single Beam
M105
(Student Visible Range)
M106
(QC / Student Visible Range)
M107
(High Specification Visible Range)
M108
Programmable Visible Spectrophotometer
M508
Basic Programmable UV/Visible Spectrophotometer
M501
(UV / Visible Spectrophotometer)

Double Beam
M550
(UV / Visible Spectrophotometer)

Special Systems
M550N
System for Measuring NATO colours of paints and fabrics.
M550 SPF
System for measuring sun protection factor of fabrics.