In addition to the novel and unique appearance of high-quality whiteboard pen, the quality of ink is also crucial. If you open a hat with a pungent smell, it will make us feel uncomfortable; If it is written on the whiteboard, it may be disappointing. This will not only affect our mood, but also reduce the efficiency and quality of our office and study. How to identify the advantages and disadvantages of whiteboard pen ink? Generally speaking, it can be judged by the following simple and easy methods:

The first is smell. Most of the whiteboard pen inks on the market are alcohol-soluble inks. The main solvent medium is fatty alcohol. Generally, alcohol is used as the main solvent and other additives are added. Today, the technology is also increasingly mature and widely used. It is the main type of whiteboard pen ink on the market at present. After opening the good whiteboard pen ink, only the faint alcohol smell slowly floats, and there is no other unpleasant smell. If there is other pungent smell, the ink may contain harmful substances, such as masking agent and banana water.

The second is intermittent writing (also known as covering and moisturizing, and some foreign matters are also known as anti-drying time or anti-drying time). Generally, according to European standards, the temperature is 22 ° C~25 ° C, the humidity is 50%, without wearing a hat, and after a certain period of time, it can still write normally. Commercial ink only lasts 3-4 hours. According to different production locations, high-quality ink can also be provided in 8 hours, 12 hours or 24 hours. There are even 72 hours of super long time, but it will change and affect other performances.

Again, it is erasable. Erasability is usually divided into instant erasability and delay. Instant erasable writing on the whiteboard for 30 seconds. It is easy to wipe with a rag or soft cloth without adhesion or "ghost"; Time delay (also known as retention time) means that the handwriting written on the whiteboard can be deleted after a period of time, usually for several days, ten days, or dozens of days according to the user's requirements. The length of stay time also reflects the actual level of ink. It is usually best to leave the circuit board for a long time.