UV Fluid

Code: HP00054320

Pack size: 1

Description

Specifications

This liquid is non‐toxic liquid paraffin containing a UV sensitive photochromic dye
Indoors it appears as a clear liquid but when exposed to natural light it immediately becomes coloured
This colour increases in intensity when exposed to direct sunlight
The colour change is reversible, although it takes about 60 seconds for the liquid to become clear again
Makes a fantastic demonstration of photochromic phenomena
The same dye chemistry is used in photochromic lenses, special window glass etc
Photochromic cells, for quantitative measurements, can be made, by trapping a drop of the fluid between microscope slides or petri dishes
Supplied as a 50ml jar

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