Gemstone UV Light Box Set Gem Identification instrument LW365nm

Function: Identification of fluorescence reaction by ultraviolet light. Light source: long wave 365nm, short wave 253.7nm. Toy & Hobbies. High UV light intensity. 1 x UV Fluorescent Light Box Set. Select the UV wavelength, press the wavelength button for over 1 second, for interchange, just press your selection for 1 second without turn the light off.

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