A pen with disappearing ink - useful and fun gift!

A Pen with disappearing ink-a fairly popular product, located in the Windows of most shops with stationery. What is it? Pens with disappearing ink and writing looks exactly the same as the most common. However there is a caveat.

A Pen with disappearing ink are not true

So, what's the catch? Pens with disappearing ink leave exactly the same label as ordinary. However, just two or three minutes the ink starts to slowly brighten. After about ten minutes, the inscription will not be visible. To consider it impossible, even in ultraviolet light.

A Pen with disappearing ink allows you to keep classified or confidential labels on the documents, if you need to remove them soon. In a word, temporary.

But it is worth noting that the use of such a handle financial or legal documents is prohibited. It is a violation of the law.

There Are also other options

However, not necessarily the result you get in ten minutes. Invisible ink are different. Much depends on the environmental conditions. For example, in the drier areas of the ink disappear faster than in the wet. The last inscription there is no change within twenty minutes. The transformation starts after a certain period of time. The inscription becomes visible worse in about an hour. She pales for a full day before his disappearance. But, after you've looked at "inscription": under what angles and what lighting – you still will not see anything. You only need to consider the fact that if the handle is hard to push, it may leave grooves on the paper.

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Of Course, illegal to use invisible ink for any fraud impossible. Special expertise will definitely prove the existence of your signature.

Where to use?

These ink pens are very convenient if you need to hide any lettering after a while, especially because on the outside they look like simple gel. In fact, others do not know that these pens are filled with ink that fades when exposed to light.

Accordingly, you can use them in different peaceful purposes. For example, inventive girl can leave such a pen your number of annoying fans. It is very convenient. And you can play a joke on the teacher by attaching a pen to the journal for grading. You may find it interesting to play and his friend, a botanist. He will be extremely surprised when the lecture notes will completely disappear. The main thing is to not be offended. Parents are also nice to play a hilarious prank. Paint over the Wallpaper and look at their reaction. In General, there are many options, just have to exercise your imagination!

Is it Possible to make the ink yourself?

By the Way, many people are interested in one question can make his own disappearing ink? In fact, it is possible!

To do this, mix a teaspoon of dextrin in 50 ml of alcohol tincture of iodine. The precipitate is filtered out blue ink. Its color they lose a couple of days after the iodine will evaporate.

There is another way. For the preparation of ink, you must take a sprig of willow and burn it, and the coal, who after remain finely pound. Further, it should be diluted with water to the consistency of ink. Disappear inscription made by them in about six days. However, an absolute guarantee cannot be given. A small error in the cooking – and ink will not work!

Where to write?

Everywhere disappear if the inscriptions made hands? Of course, in order for them does not become necessary to write it on paper. And even its density affects how quickly the inscription will disappear. Although, as a rule, much more depends, as mentioned above, the lighting and humidity. In short, this spy pen, dry room and high-quality paper – all that is necessary for the rapid disappearance of the label.

Shelf Life

And finally, the quality and shelf life. Pen with disappearing ink feedback is extremely positive. With the right use of ink retain their properties throughout the year. You must just be sure to put on her cap.

In a word, this wonderful pen, at first glance, no different from the ordinary.

In order to write it, virtually no pushing is required. So on paper and is not even the pits. In the end, after some time made inscriptions disappear, and any attempt to read them are meaningless (even with the help of UV).

By the Way, this pen can be a great gift for a child who likes to play spies. Adults with a sense of humor this gift also will like. You can even pick up a special gift: stylish, classic design handles are beautiful, but a severe case will definitely attract the attention of your family andloved ones.

The Value enhancement is relatively low. It all depends on your chosen design. In principle, you will easily be able to meet 130-150 rubles. Agree, for such unique things, this price is just great.

So, if you want to make an original gift or just to have fun playing your friends, spy pen – exactly what you need! Purchase and do not regret it, do not hesitate! Well, friends and family will appreciate your sense of humor!