The weather is getting colder and colder, there is already a snowfall, and in October, due to the seven days of National Day, it always feels like time flies quickly, and in a blink of an eye, it is already November.

Lu Tao carried a schoolbag and a large cardboard box in his hand, and walked on the way to the school's chemistry experiment building.

The consumables ordered by Dong Jun had arrived two days ago, and he was going to send them directly, and by the way, he would also run to the various laboratories in the building.

Scraped the snow on the soles of his feet on the edge of the steps outside, stomped his feet again, and after registering with the guard, Lu Tao walked up the stairs.

The building is divided into six floors, and on the wall at the entrance, there are several large letters----Science is the ladder of human progress.

On the corridors of each floor, there are portraits and quotations of scientific celebrities.

The chemist's "elemental composition" should be C3H3, i.e., Clear Head + Clever Hands + Clean Habits. - Lu Jiaxi

Without redoubling diligence, there is neither talent nor genius—— Mendeleev

Lu Tao smiled, he is worthy of being engaged in chemistry, and even what he said is related to chemistry, which can be regarded as a feature.

A sentence came out of his head, "How much strong acid pursuit, silica is unmoved, because he just wants to fly away with HF...", shook his head, and went directly to Dong Jun's laboratory.

After knocking on the door and entering, I saw that my brother was in front of the laboratory table with a serious face, holding an Erlenmeyer flask in his left hand and a pipette in his right hand, and was filling it with liquid.

He first gently placed the cardboard box in the corner, and then waited quietly.

When Dong Jun saw him coming, he nodded at him and motioned to wait for a while.

Science is rigorous, no matter whether the experiments are simple or complex, they must be meticulous, and he doesn't want to disturb people because of his arrival.

After Dong Jun finished adding the reagent, he shook the bottle, looked at the color inside, seemed to be a little dissatisfied, and said to Lu Tao after putting it down: "Have I ordered the goods arrived?"

Lu Tao hurriedly stepped forward and replied, "I arrived two days ago, but the invoice was a day late, so I only sent it to you today, didn't delay your experiment?"

"It's okay, it's not easy to walk outside, but it's hard for you. “

"It should be, it should be. Lu Tao replied, "That senior brother will take an inventory here to see if it's right, if there is a problem, my side can solve it early." “

Reagents and consumables are not as troublesome as equipment, and after arrival, it is generally simple to click on the number and model according to the previous list.

After the inventory was completed, Lu Tao took out the invoice from his bag again: "Senior brother, this is the invoice, you look at the price here, the original market price is about 5500, I will give you a discount here, and it will be just 4800." “

Dong Jun directly glanced at the invoice results, nodded and said, "It's okay, I'm sorry for you." ”

Taking the opportunity of delivery, Lu Tao also wanted to inquire about a little more news and see the future opportunities, so he couldn't help asking: "You haven't encountered any problems in the recent experiment, right?"

As soon as he mentioned this, Dong Jun couldn't help but sigh lightly and began to pour bitter water.

"There are a lot of problems, recently our mentor took on a project from a chemical company, otherwise we can be so busy?" said as he pointed to several other brothers in the laboratory.

"Oh, it's like that, when you have a project, you're very busy, and when you don't have a project, you're idle. Lu Tao continued.

"Don't mention it, it's not that you don't know, we're just working hard. ”

He couldn't pick up this topic, so he had to play haha and comfort: "It's good to wait until the project is over, and when the time comes, the mentor will have to invite you to dinner." “

Through the chat, Lu Tao learned about the situation of the laboratory in detail, such as the approximate annual funding, how many graduate students and doctoral students, and what instruments they have.

This is to lay the foundation for future sales, before it was in the dormitory, after all, it was not so intuitive, and now the two have begun to cooperate, and it doesn't seem too abrupt to ask about this.

While the two were chatting, a girl in a white lab coat walked in hurriedly, saw Dong Jun, and said directly: "Senior brother, the tutor asked you to go over." “

The university's laboratory is basically not with the tutor's office, but it is not far away.

Seeing this, Lu Tao planned to get up and say goodbye, after all, people have something to do, and they have learned what they want to know, so they can't keep bothering.

"Senior brother, you wait for a while, I'll go to the mentor first, there seems to be a bit of a problem with the experiment just now, last time I saw that you know a lot about the equipment, help me in a while to see if there is a problem with the instrument." ”

"Okay, you go first. Lu Tao replied.

There were only five or six students in the lab, all busy doing experiments, so he had to get up and walk around the room, taking a look at the brands of instruments and consumables used in it. When I meet a female student who is a little more idle, I will also come up to greet her.

"Hello senior sister, I am Lu Tao in the third grade, and now I am working part-time, mainly making laboratory consumables and equipment, senior sister can find me if you need it in the future." ”

Due to gender, he only went to the graduate men's dormitory and the doctor's apartment before, and he never ran for the women.

Everyone is very busy, and he is not good at introducing too much, just making a simple introduction, whether it is successful or not, he doesn't really care, it's just one more opportunity.

"Yes. "Girls are always a little more tactful than men, and most of them don't have direct needs, just nodding their heads and going about their own business.

If you are a little more interested, you will ask a few more words: "Senior brother, what consumables do you have over there, what instruments do you have, and is there a catalog?"

Lu Tao also replied one by one.

After waiting for about twenty minutes, Dong Jun returned to the laboratory with a sad face.

His face was a little ugly, but seeing that Lu Tao was still waiting, his face was a little better, and he said, "Senior brother, I'm sorry to wait for so long." ”

"Senior brother, are you okay?" Lu Tao knew from his face that he must have been reprimanded by his mentor.

Dong Jun shook his head: "It's not an experiment yet, by the way, you go with me to see the instruments in the laboratory over there, I don't know what's going on recently, and the results are always wrong." ”

"Yes. “

Dong Jun's mentor is named Yu Cheng, and he has two laboratories. Whether it is a horizontal project or a vertical project of the enterprise, there will be more than others. Correspondingly, the instruments and equipment used in it will also be more high-end.

Millions of equipment are generally placed in public laboratories, but there is no special public laboratory in this college, so the other laboratory in Dong Jun's mouth is a place to put relatively high-end equipment.

"This is the machine. Taking Lu Tao to another laboratory, Dong Jun pointed to the instruments placed on the experimental table in the middle and said.

"Hehe, it turns out that you still have a pour point tester in your laboratory. Lu Tao was amazed.

The pour point is the minimum temperature at which an oil can flow under a cooled specimen under specified test conditions.

Dong Jun said: "This is still bought by our mentor from abroad, does the junior brother understand this?" He looked at Lu Tao, and now he was a little unsure.

Originally, this kind of equipment was in charge of the manufacturer's special technical engineers, but then it had to be reported first, and then tossed back and forth, and the time was also long. This is not to say, if you really want to repair, just the engineer to come over, the price spent is at least more than 5000, not counting the round-trip ticket accommodation of the engineer, it is not sure whether the need to replace the accessories, if so, it is more than 10,000.

Lu Tao stepped forward to take a look and said, "This product is from Germany, and the price is probably more than 300,000 yuan, right?"

The pour point tester is divided into fully automatic and semi-automatic, and the price of automatic Lu Tao is known, probably more than 600,000 yuan, and this one is semi-automatic. Even after more than ten years, the domestic ones are only less than 30,000 yuan, but the imported ones are still more than 400,000 yuan.

When Lu Tao was about to answer, a somewhat dissatisfied voice came from the door.

"Dong Jun, I said that you can't bring people in this laboratory casually, these are all precision instruments, and you are responsible for the problem?"

It is Dong Jun's mentor, Professor Yu Chengyu.