psychochemist

Chapter 50 The stunt of smelling
After taking a few steps back, Shi Wei stood still, stepped forward and came back, and said confidently, "Mr. Yu, there is something in your words."

Yu Fan's words were even harsher: "Isn't it? Mr. Shi, if you are not greedy enough, you will always ask for trouble in the end."

Shi Wei said unconvinced: "Mr. Yu, you don't want to spitting blood. You have to speak out whether it is black or white, and don't talk nonsense."

Yu Fan took a slight breath and said: "Our barrel sealing cap is carefully designed. The words on the sealing cap and the trademark on the side wall of the barrel are completely parallel, but everyone, this warehouse The words on the inner sealing caps are not parallel, and each has its own angle, which shows that these disposable sealing caps have been opened by someone!"

Shi Wei argued: "You sent the logistics from the main factory, after such a long distance, the road is bumpy, and now the logistics are violently loaded and unloaded, maybe what happened to these barrels on the road, the position of the disposable sealing cap Changes are normal."

Yu Fan went on to say: "Each sealing cap is pressed on by our special capping device, and it is generally impossible to turn it." While talking, Yu Fan clasped the cap with his hands, and this sealing cap is It is very loose and can be rotated on it. It is obvious that the hands and feet were passive in the later stage.

Yu Fan continued: "This is just one of them. The more important reason I can judge that the sealing cover was opened is that the sealing cover is not the original sealing cover at all."

Shi Wei was startled, even his assistant Li Boming could see Shi Wei's panic.

Yu Fan: "The font on this sealing cap is Song typeface. The font on our authentic sealing cap is Founder font. This type of font needs to be purchased and authorized for commercial use, and we have paid for it. Generally, knowledgeable design The company dare not use this font when designing things. If my reasoning is correct, our previous insurance cover was opened, and finally replaced with this fake cover.”

Shi Wei continued to ask: "Then why should I change the insurance cover if I have nothing to do? It's unnecessary."

Yu Fan: "Boss Shi, I haven't said that you replaced the insurance cover."

Shi Wei was taken aback for a moment.

Yu Fan continued to say calmly: "The purpose of changing the lid is very simple. It is to open the lid and add things into it." While talking, Yu Fan raised the sample he just took and looked at him at eye level. Through the sunlight, the liquid appeared Crystal clear.

Yu Fan: "What you bought from us is the cheapest HR-3S water-based transparent cutting fluid. The color of our stock solution should be light yellow, but the color of this liquid is dark yellow. Obviously, it has been tampered with."

Shi Wei said: "Then why am I..." He found that there was a problem with his wording, and immediately changed his words: "Then why did this person do something wrong? Could it be a commercial competitor doing malicious sabotage?"

Yu Fan smiled, glanced at everyone, and said: "Oleic acid and polyether defoamers are not cheap, no competitor is stupid enough to use these two things to cause damage, if I, sprinkle a pinch of salt, enough It will destroy the entire cutting fluid system, and it will not change the color, so it is not easy to be detected."

Guo Na asked curiously from the side: "Brother Yu, how do you know what was added? You can see it with your eyes?"

Yu Fan turned around and smiled mysteriously at Guo Na: "I didn't see it, I smelled it. Oleic acid has a unique smell of lard, and polyether has its own unique smell."

Everyone looked shocked.

Yu Fan continued to explain: "In addition to the happy flow mode, this is also my unique skill. When I focus on the sense of smell, and then suddenly burst out the sense of smell at that moment, I will smell the smell that ordinary people can't smell, and then through my sense of smell. If you separate and filter these smells, you will know which is which. In fact, all of us can learn this skill through training, but this skill is not always available. When you start to smell, your sense of smell will become more and more Insensitivity, this is a self-protection mechanism of the human body. This is why when we arrive at a new house, we will suddenly have a strong sense of the smell of the house, and the reason why we can’t smell the smell of the house after a while.”

Shi Wei interrupted again: "Then, uh, what is the purpose of this person adding these things?"

Yu Fan: "On the Internet, it is said that oleic acid can improve the lubrication performance of cutting fluid, but it will produce foam. So the purpose of people who add these things is to improve lubrication through oleic acid, so that this ordinary cutting fluid can be sold at a high price, but In order to suppress the generation of foam, some defoamers should be added, and polyether seems to be a good choice.”

Shi Wei's ears began to turn red, and he began to pull his collar unconsciously.

Yu Fan continued: "It's a pity that he made a big mistake. The deployment of cutting fluid can't be done simply by adding a little something. What matters is the balance of various performances. Even our cheapest products still implement this concept. , still has a high technological content. Although oleic acid can improve some lubrication, the side effects are also obvious, oil and soap are separated, and it is more prone to corrosion. In our system, oleic acid is drinking poison to quench thirst. And eager to use polyether defoamer The idea of ​​suppressing foam is superficial. The efficacy of polyether defoamer will decrease over time, especially when the pH value becomes low. When it is lower than a certain value, the effect of defoamer will be completely lost, while before The added oleic acid will just cause rancidity and lower the PH value. Therefore, what you just said, Mr. Shi, happened. It was fine for users to use it at the beginning, but the more they used it, the more foam they would become.”

Shi Wei didn't dare to answer any more.

Guo Na took over the words: "I understand, in fact, the reason for all this is that a layman, in order to increase his own interests, self-righteously added things to it, and wanted to make it into a high-end product to sell more money, but in the end he shot himself in the foot. That's it." Guo Na summed it up perfectly.With Guo Na's summary, Yu Fan's many professional popular science explanations are easy to understand.

Yu Fan nodded to Guo Na, and said earnestly: "Your reasoning is logical. But as chemists, we only look at the real evidence and don't draw inferences. As psychologists, we don't directly compare the suspect's Put the information into the clues, so that you will feel that the person under suspicion is the ultimate criminal. Instead, the suspect should always be X, and through evidence clues and psychological behavior logic, formulate and finally solve the equation. got the answer."

Guo Na nodded with deep understanding.It turns out that this is the psychochemist.

Yu Fan turned his head to everyone again and said, "Mr. Shi, don't worry. The current evidence is obviously not enough to make a conclusion, and everything I just said is preliminary reasoning. We still have some data to add to the equation to solve it, and this This is the final data needed.” Yu Fan shook the sample bottle, “When I go back and do a component analysis, I can see whether my reasoning is correct. Finally, I will go to the end user to find out whether the product model you sell is HR-3S, whether the price is in line with the market price, I think the truth will come out."

After hearing Yu Fan's series of words, Shi Wei stood there blankly, looking lost.An evil thought welled up in my heart.

　The words of a gentleman are few but true, and the words of a villain are many but empty——Polyether

　　
　
(End of this chapter)