Click on the model number on the left hand side in the table below to view the full specification of the instrument.

ModelVisibleUVScanningSingle beamDouble beamProgrammableBandpass (nm) 
M501YesYesYesYesNoYes2 or 4
M550YesYesYesNoYesYes1 or <1.8
M550VYesYesYesNoYesYesVariable: 0.5, 1, 2 and 4

*Instrument must be connected to and controlled by PC for scanning function.


M500 & Chroma With the Chroma software package, either the M501 single beam spectrophotometer or the M550 true double beam spectrophotometer can be controlled by a PC.  Determine the transmission and reflection properties of solids and liquids precisely according to ISO 11664/CIE 15 and display colour values according to both the Helmholtz and the CIELAB method.

M500 & Colour Using the Chroma software package and an M501 single beam spectrophotometer or the M550 true double beam spectrophotometer, spectral characteristics of solids and liquids can be accurately determined and colour values can be calculated and displayed.

M550 SPF  UV penetration system. This system is for measuring the sun blocking properties of fabrics and fully conforms to European Standard EN 13758-1, American (AATCC Test Method 183.1998), British (BS 7914:1998) and Australian and New Zealand (AS/NZS 4399:1996) test methods.