Disappearing ink pens are a fairly popular product today, located on the windows of most stores with office supplies. What is it? Pens with fading ink look and write exactly the same as ordinary ones. However, there is one caveat.
Pens with fading ink cannot be distinguished from real ones
So what's the catch? Pens with fading ink leave exactly the same inscriptions as ordinary ones. However, literally after two to three minutes, ink begins to slowly lighten. After about ten minutes, the inscription will no longer be visible. It is impossible to consider it even in ultraviolet light.
Disappearing ink pens allow you to leave secret or confidential lettering on documents if you need to remove them soon. In a word, temporary.
But it is worth noting that using such a pen in financial or legal documents is prohibited. This causes a violation of the law.
There are other options
However, you will not necessarily get the result in ten minutes. Invisible ink is different. Much depends on environmental conditions. For example, in drier rooms, ink disappears faster than in wet rooms. In the latter with the inscription there are no changes within twenty minutes. The transformation begins after a certain period of time. The inscription becomes visible worse after about an hour. It turns pale throughout the day until its complete disappearance. But no matter how you look at the “inscription” after that: at whatever angles and under whatever lighting, you still won't see anything. It is only necessary to take into account the fact that if you press hard on the handle, it can leave furrows on paper.
Naturally, it is illegal to use invisible ink for any fraud. Special examinations will definitely prove the presence of your signature.
Where to use?
Such ink pens are very convenient if you need to hide some inscription after a while, especially since from the outside they look like simple gel. In fact, others do not know that these pens are filled with ink, which disappears when exposed to light.
Accordingly, they can be used for various peaceful purposes. For example, inventive girls can leave their phone number with annoying fans. It is very comfortable.
And you can play a trick on the teacher by attaching such a pen to the journal for grading. You can also play your nerd friend interestingly. He will be extremely surprised when the lecture notes disappear without a trace. The main thing is not to be offended. It's also nice to play a fun joke with your parents. Outline the wallpaper and look at their reaction. In general, there are many options, it remains only to show your imagination!
Can I make ink on my own?
By the way, many people care about one question: is it possible to make vanishing ink with one's own hand? Actually, you can!
To do this, mix a teaspoon of dextrin with 50 ml of alcoholic iodine infusion. The precipitate is filtered, and blue ink is obtained. They lose their color a couple of days after the iodine evaporates.
There is another way. To prepare ink, you need to take a willow twig and burn it, and finely grind the coal, which will remain afterwards. Then it must be diluted with water to the consistency of ink. The inscriptions made by them disappear in about six days. However, one hundred percent guarantee is impossible to give. A small error in the preparation - and ink will not work!
Where to write?
Do inscriptions made by such pens disappear from everywhere? Of course, in order to completely eliminate them, it is necessary to write on paper. And even its density affects how quickly the inscription disappears. Although, as a rule, much more depends, as mentioned above, on lighting and air humidity. In a word, a spy pen, a dry room and quality paper are all that is needed for the inscription to quickly disappear.
Shelf life
And finally, with regard to quality and shelf life. The pen with disappearing ink reviews is extremely positive. When used correctly, ink retains its properties throughout the year. It is only necessary to put a cap on it.
In a word, this wonderful pen, at first glance, is no different from the ordinary one.
In order to write with it, virtually no pressing is required. Therefore, not even recesses remain on paper. As a result, after some time, the inscriptions made disappear without a trace, and any attempts to read them turn out to be meaningless (even with the help of ultraviolet light).
By the way, such a pen can be a great gift for a child who loves to play spies. Adults with a sense of humor will also like this present. You can even choose a special gift option: a stylish classic pen design and a beautiful, but strict case will surely attract the attention of your family and friends.
The cost of the accessory is relatively low. It all depends on your design. In principle, you can easily keep within 130-150 rubles. Agree, for such a unique thing, this price is simply gorgeous.
So, if you want to make an original gift or just have fun playing your friends, the spy pen is exactly what you need! Get and you will not regret, do not even doubt it! Well, friends and family will certainly appreciate your sense of humor!