IRDC4-10G: IR Fluorescent Phosphor 10 Grams $162.25 each + – Add to cart The add to cart button will appear once you select the values above Contact us for more information Excitation (absorption) frequencies: multiple including 460nm, & 600nm Emission (fluorescence) frequencies: primary centered at 710nm Average Particle Size: 5 Microns Solubility: None Type: Proprietary inorganic Blue Wool: 8 or higher Long Term Stability: Very high Visible Appearance: Off white