Spectrophotometer Apparatus

NPL is seeking engagement from suppliers who can supply a spectrophotometer apparatus which can perform diffuse reflection measurements in UV/Vis/NIR wavelengths.

UV/Vis/NIR Spectrophotometer, for diffuse reflection measurement.

To include di (direct inclusive), de (direct exclusive) 0: 8 degrees and 0:45 degrees measurement geometries.

Mandatory requirements

• Equipment must be compliant with all international standards: CE, UKCA etc.
• Wavelength required: 200 nm to 2500 nm (optional up to 3300 nm)
• Measurement geometries required: 0:8 degrees, 0:45 degrees, multi angle measuring
• Data output: the raw uncorrected data needs to be accessible in a readable form compatible with our existing systems (for example txt, csv, Excel)
• To measure sample of sizes 25 mm diameter to 100 mm diameter

Other optional requirements

• The ability to program and save custom measurement sequence scripts
• Ability to perform measurements in different positions on the sample
• Horizontal and vertical sample mounting possible
• Multiple sample accessory for automated sample changing.
• To measure larger samples up to 460 mm x 460 mm.

Information required

• A lab visit to demonstrate the equipment and software is preferred.
• Give information on possible add on modules / options for the instrument
• Give details of software and data output formats (ability to modify software)
• Practical evidence that the dark signal is consistent across all ranges and detectors especially at low signal levels.