LEDµSF Portable Spectrofluorometer

A portable spectrofluorometer for non-invasive analysis of cultural heritage artworks using LED sources.

The LEDµSF is a new device that is essential to answer critical questions during the scientific analysis of materials in artwork.

Topics include:

Characterization of Pictorial Techniques
Pigment Restoration Assistance
Diagnosis of the State of Conservation
Authentication of Murals

Features:

Portable and lightweight spectrofluorometer
Contactless, non-invasive and non-destructive measurements
Modular Design: exchangeable LEDs from 285 - 625 nm according to the materials analyzed
Irradiation Spot: ca. 1 mm
Adjustable Power of LED
Remote triggering with the possibility to set integration time (adjustable from 3 μs - 600 s)
Spectragryph software included - database for reference of spectra containing pigments and binders will be built by user
White LED for reflectance spectra
Camera and two red lasers for easy positioning and adjustment of the working distance (ca. 4 cm)
Recordable spectra from 190 - 1100 nm with a resolution of 1.5 nm

UV Fluorescence Analysis of Organic and Inorganic Materials:

Natural binders
Wax
Resin
Varnish
Pigments
Textiles
Dyes
Polymer Materials

Monitoring of an Accelerated Aging:

Legend: Before irradiation, the cochineal has a maximum of fluorescence emission at about 640 nm (due to anthraquinones compounds: carminic acid & laccaic acid).

After 12 hours of UV light irradiation at 254 nm, the maximum of emission shifts towards the short wavelengths (625 nm) and the band of the yellow components is more visible at 577 nm which indicates the destruction of the red carminic acid.

Technical Specifications:

LED Sources	Up to 15 different wavelengths (255 - 623 nm) are available
Power Requirements	24 V power supply or power bank
Dimensions	170 x 80 x 53 mm 6.69 x 3.15 x 2.08 in.
Weight	ca. 0.8 kg ~ 1.76 lbs.
Certification	Manufactured under ISO 9001 guidelines, CE conform

Product Includes:

Measurement Head
LED Source
Control Electronics
Software for Post Measurement Processing (Example: Kubelka Munk Treatment)
Optical and Opto-Mechanical Positioning Elements:

An X/Y Adjustment Plate
A Tripod With Z Positioning
USB Cables

LEDµSF in Action:

http://products.rotundascitech.com/LED%C2%B5SF-Hyperspectral-imaging-spectrofluorimetry.pdf

http://products.rotundascitech.com/LED%C2%B5SF-Non-Invasive-analyses-by-spectrofluorimetry-and-complementary.pdf

http://products.rotundascitech.com/LED%C2%B5SF-Spectrofluorimetric-study-of-the-ageing-of-mixtions.pdf

http://products.rotundascitech.com/LED%CE%BCSF-A-new-portable-device-for-fragile-artworks-analyses.pdf

http://products.rotundascitech.com/LED%CE%BCSF-in-situ-non-invasive-spectrofluorimetric.pdf

*The below articles were Google translated from French to English. Please excuse any grammatical errors:

http://products.rotundascitech.com/LED%C2%B5SF-Studying-the-UV-fluorescence-of-cultural-heritage-materials.pdf

http://products.rotundascitech.com/LED%C2%B5SF-UV-fluorescence-of-binders-used-in-gilding-on-medieval-wall-paintings.pdf