Usage: Writing and Drawing.

Functional Features: High-quality fluorescent ink, eye-catching and distinctive, suitable for smooth surfaces.

Warning: This product has volatile properties. After use, please tighten the cap to prevent direct sunlight exposure.

What is a fluorescent pen?

These are recently introduced pens used for making marks that are thicker and lighter in color.inkCover the key parts to make marks, after making marks, do not obstruct the text, which is clear at a glance.

The principle of fluorescent ink:

Its key ultraviolet fluorescenceInkThe principle of this ink is to add visible fluorescent compounds that are excited by ultraviolet light. By absorbing the energy of light, it produces atomic energy level transitions and then releases the extra energy absorbed. The anti-counterfeiting feature is that it emits red, yellow, green, and blue visible light (400nm～800nm) under ultraviolet light (200nm～400nm). This ink comes in colored and colorless varieties, with long-wave (365nm) and short-wave (254nm) options. Fluorescent pigments are organic complexes that are ground and refined to high luminescence rates. They are typically colorless or light-colored and only show various colors of visible light (400nm～800nm) under ultraviolet light (200nm～400nm). Based on the wavelength of the excitation light source, they can be divided into short-wave ultraviolet-excited fluorescent pigments (excitation wavelength of 254nm) and long-wave ultraviolet-excited pigments (excitation wavelength of 365nm).

The characteristics of fluorescent pens:

     Fluorescent pens contain fluorescent agents, which produce a fluorescence effect when exposed to ultraviolet light (such as sunlight, fluorescent lamps, and mercury lamps). This causes them to emit white light, giving the colors a fluorescent appearance.

Now there are also invisible fluorescent pens that are colorless when written, and after being illuminated by a UV light, the written content can be displayed.

Fluorescent pens are divided into two types: water-based and oil-based.

Water-based penSimilar to colored pencils, it is non-toxic, but it is not easy to dry. Moreover, its coverage is not good, and it cannot be written on some surfaces. When two colors are stacked together, it will look dirty.

Oil-based pens use synthetic solvents that dissolve color in alcohol, making them easy to write and dry quickly, with good coverage and a relatively low price.

Fluorescent pen quality identification:

Fluorescent pens are often used for.PaintingMark with a check. When selecting, you can use two semi-transparent report papers orTyping paperLay the papers on top of each other, write some words with a fluorescent pen on the top one, paying attention to the weight, pause, and the rhythm. Then flip it over to check. A high-quality fluorescent pen should not have any color seeping through on the back of the top paper, and there should be no pen markings on the bottom paper.