O13 - Hydrozincite - Goodsprings, Nevada yooperlite Both UV wavelengths use the

Both UV wavelengths use the same optical filter to block out the visible light generated by the bulb

Note: ninety percent of all fluorescent rocks need a filtered shortwave UV light source 254nm (NOT A BLACKLIGHT) The M101HO includes both longwave and shortwave UV light

and old mine tailings

We recommend you start with a shortwave UV lamp before going with longwave UV  because over 90 percent of fluorescent minerals need shortwave UV to respond

Special UV reflector to redirect maximum UV out the optical filter

O13 - Hydrozincite - Goodsprings, Nevada yooperlite Both UV wavelengths use theHydrozincite Goodsprings, Nevada Sold bright blue response under shortwave UV on all sides of specimen. 7 Ounces Approx. 3 1 2 x 2 1 2" inches