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As long as you don't wet the spot with the ink with any water.

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Q: How long does invisible ink last on paper?
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Related questions

When writing with invisible ink how do you know you need more ink?

When the nib stops wetting the paper.


How do you tell when you run out of invisible ink?

i can not write on plain paper and then come to come ink is over.


How do you make invisible ink at home?

Writing with milk on paper will be invisible (or nearly so) , Heating the paper will scorch the milk first and make it visible.


How do you know when invisible ink runs out?

When you use your secret pen and there are no words showing up on the paper that means your out of ink.


If you use invisible ink how do you know your ink runs out?

Invisible ink isn't actually invisible. The writing done with invisible ink is invisible, and can be read only after applying certain treatments. For example, orange and lemon juices are invisible inks. Orange and lemon juices are perfectly visible, but when you write with them, the text becomes invisible. The text can be read only if the paper is kept under ultraviolet light, or if it is slightly heated.


How do you make invisible ink with milk?

just use the milk. write on the paper then let ir dry. When the ink is dry you take a lamp and if you shine light on the paper the ink will become visible


How do you make invinisble ink?

To make an invisible ink, one can use any acidic juice such as lemon, orange, or apple. This can be used to fill in a pen and carry it everywhere and anywhere. The invisible ink can be used to write on any paper. When paper is placed under candlelight, the secret message will be revealed.


How do you reveal invisible ink?

There is more than one kind of invisible ink, but some of the simpler varieties can be revealed by heat. This can be done with a candle - but carefully, since you don't want the paper to catch on fire.


What is the conclusion to making invisible ink?

to tell how you can make invisible ink


How does air pressure help to fill a fountain pen with ink?

Air pressure is what makes the ink change colors as it flows from the pen onto the paper. Without air pressure, the ink would remain colorless and, therefore, invisible on the paper.


How do you make invisible ink and see it with grape juice?

lime water { calcium hydroxide-Ca(OH)2 } is invisible ink on white paper. sugar, acid and dye in grape juice is main reactance with lime.


What is the dependent variable in an invisible ink experiment?

What are the dependent and the independent variables in the invisible ink experiment ie To identify the best invisible ink experiment.