Chapter 61

In the 1980s, it was a very painful thing to build a laboratory by oneself. Those irresponsible state-owned enterprises and factories did not care what kind of containers they made, nor how many crimes the users would suffer after they got the containers.

If it's really a middle school laboratory, the teacher just needs to explain on the stage, "students, please pay attention to the accuracy of all the containers you use. The conditions are limited." this is the past.

But when someone wants to do a research experiment, it's a big problem.

First of all, we have to assume that all the equipment and instruments are unreliable, and then re measure them by ourselves, and pick out a few pieces with accurate accuracy occasionally, so that they can be used in the experiment.

It's like the legendary sniper bullet selection. The factory rattled with bullets, and the soldiers squatted there to pick them up one by one, compare them one by one, and then use them on the battlefield. Of course, compared with the more distant naval battle of 1894-1895, the grinding shells are stronger, but their strength is limited.

Fortunately, when Yang Rui was a graduate student, he also encountered such bad things. His tutor is not well-known, and he does not have much money. When purchasing equipment and instruments, he usually supports domestic instruments. Although the domestic instruments in the 21st century are much better than those in the 1980s, the accuracy requirements of the academic circles are constantly improving. In the end, the work of debugging instruments can only be left to Yang Rui and other graduate students.

Yang Rui made an experiment for the students. He first checked all the newly bought containers. As a result, they couldn't match each other's numbers. His heart was cold. Of course, the scale like a beaker can only show a rough picture, but the weights of the balance are uneven. What's the problem?

The state-owned chemical instrument store also knew what it was like. When Yang Rui took the container back, the middle-aged woman who was knitting under the counter said without a blink of an eye: "you can't return it. You have to pick it out in the warehouse. You can't buy anything on the counter..."

It's about the time I said it more than once, With a special rhythm.

Yang Rui seems to be hypnotized, and several students obediently sent the containers to the warehouse behind the store, and then moved the paper boxes on the iron shelves down one by one, like soldiers carrying bullets, squatting on the ground, quietly selecting.

In 1982, let alone imported containers, it would be very difficult to change a chemical instrument store. There is only one store in Nanhu area, which is a branch of Pingjiang. In other words, the quality of what you see here is what Pingjiang's is.

In fact, there are some good stuff in North * Beijing, which concentrates on the most elite research institutes in the country.

However, in Hedong Province, it is estimated that the famous research institutes have their own purchasing channels. For the laboratories listed in Xibao middle school or Xibao meat factory, if they want to buy things, they can only go to ordinary stores, which need both precision and quality. Obviously, they can't do it.

Yang Rui can only quietly squat in the warehouse to choose.

The Yellow headlights hang down from the ceiling more than five meters high. It's rather dim, and the width between the iron shelves is narrow. After squatting for a while, Yang Rui can't bear it. He thinks: Fortunately, he exercises every day. If he does the same as before, he won't be able to do it in the next two days.

Yao Chi, who came to help, was a clever young man. He found that Yang Rui changed his feet frequently. He stretched out his head and looked around and said, "otherwise, let's move things to the door and pick them up. Open the door and move a chair. People can be more relaxed, but it's a bit in the way of others."

"Move to the door first." Yang Rui thought about it. He took out a bag of wild goose pagodas from his pocket and gave it to Yao Chi. He said, "go and give some cigarettes to the masters outside, and say we'll take a bit more space."

"Well." Yao Chi was less than one meter six, but he jumped three feet high and went to the yard with a cigarette.

Although it's just a small chemical instrument store, it has more than 20 employees, including seven or eight warehouse keepers.

So many people, of course, have no work to do. They come and go by the order every day, pretending to be on duty. Yang Rui doesn't expect them to help, but he doesn't want them to stop him from choosing.

After all, turning over so many boxes of things is most likely to increase people's workload. According to the style of state-owned enterprises, no matter how idle people are, they can't do extra work for you, and they can't give you a pack of cigarettes.

Cao Baoming and he Cheng, another student in his group, help Yang Rui move up and down.

Unlike Cao Baoming and Su Yi, he Cheng is a tall and thin boy who looks a little thin. When he began to practice horizontal push, he couldn't even push the smallest barbell piece, so he hung the clamp on the 15kg horizontal bar and began to push. Up to now, he finally pushed 35kg, but when he picked up the heavy paper box, he was not as light as Cao Baoming.Yang Rui did his best to select the container, and then he tried his best to select the reagent.

Reagents can't be tested on the spot, so we can only choose good brands. Fortunately, domestic research institutions also know how unreliable domestic products are, so many research institutes have made so-called refined reagents on top of analytical pure reagents. The price will be higher and the purity error will be smaller.

Yang Rui picked out some of the things he could see through, and he couldn't help thinking: "it's no wonder that researchers should be academic authorities. If it's a national key project... No, as long as it's a provincial key project, the things they use must be carefully selected, which is more useful than money."

"OK, that's all. I have to go to Pingjiang next time. It's just that the road is a little far away and it's inconvenient to take the shuttle bus." Yang Rui greets Cao Baoming and asks him to help send the selected reagent to the counter for accounting.

The salesman was still busy knitting. When he saw the first paper box Yang Rui had sent, he calculated the result carefully and said, "eighty five eight yuan, no change."

With that, she bowed her head to do her own business.

Yang Rui laughed and said nothing.

Then, there were two "bang bang" sounds. Cao Baoming and he Cheng also put the paper box on the counter.

Yao Chi walked slowly, but he did not admit defeat. He held a big box, which contained a mechanical analytical balance with a glass cover. It was very heavy. When he put it on the counter, it made a dull sound of "Dong".

The bear girl looked up in surprise, recognized the box and said, "did you order this?"

"Yes. I paid a deposit of 500. Here's the deposit. " Yang Rui showed the receipt to the other party.

"Your company has a lot of money. Do you have the rest?" Finally, the salesman put down his sweater and stretched out. Then, in front of Yang Rui, he did a group of stretching exercises. Then he began to look through the small book in the drawer and said, "I have to keep an account of this thing. And, can you open the box and see if the accessories are complete? If you leave the counter and find the manufacturer if it's broken, you won't be responsible for the loss of parts. "

Yang Rui has no choice but to take out the analytical balance.

This is a clock like device, which also has complicated components like clock gears. In order to ensure accuracy, all mechanical parts have strict specifications like clocks.

Its precision is one millionth of a gram, which is 0. 1 mg, is an indispensable member of modern quantitative analysis. This guy is indispensable in almost all university laboratories.

Of course, if you only go to university after 2000, the mechanical analytical balance is just a tool for people. When it comes to experiments, students would rather wait in line for the electronic analytical balance than operate the complicated mechanical analytical balance.

Naturally, Yang Rui is not willing to operate it.

The same is to weigh a thing, the electronic analytical balance gives the result instantly, but the mechanical analytical balance keeps adjusting the knob, beam, lever, vernier. If a substance is nothing, most of the time, they encounter a variety of mixtures.

When Yang Rui was an undergraduate, he studied mechanical analytical balance for several classes, and he wanted to smash it at that time.

However, in the 1980s, only mechanical analysis was available for quantitative analysis. When Yang Rui recruited experimental assistants, he made up his mind to throw out all this work.

"Little brother, which unit did you buy the scales for?" A middle-aged uncle looked at Yang Rui's money and finally came out of the shadow.

"Xibao middle school."

"Do middle schools buy analytical scales? Which enterprise does Xibao middle school belong to? " In normal people's mind, rich middle schools are naturally enterprises' middle schools.

"It's not a factory run high school." Yang Rui shook his head, turned away from the topic and asked, "are you from the local research institute?"

The middle-aged uncle was a little surprised. He touched his sparse hair and asked, "how do you know?"

"In the chemistry store, wearing a shirt, either school or institute." Yang Rui answered naturally.

"Yes, there are only 807 and 510 in Nanhu. There are no colleges and universities, so they can only belong to research institutes." The middle-aged uncle explained it to himself, a taste of EQ at the bottom.

Such people are the most in schools and research institutes, and only such places have their living space.

Yang Rui nodded habitually and said, "I guess so."

"I'll just say... Ah, are you going back?" The middle-aged uncle wanted to learn how to be close to others. Unexpectedly, Yang Rui didn't want to eat this at all. He was about to leave with something in his arms, so he had to stop him.

Yang Rui said: "what's the matter with you?""A little bit."

"If you don't tell me, I'll go."

"It's nothing... I just see that the analytical balance you bought is very new. Is it a new product from Shanghai?" In the latter sentence, he asked the salesman.

She is also middle-aged. She is very busy. She stares at the sweater and says, "don't you come to see it every day? What else to ask. "

The middle-aged uncle was embarrassed and said, "I didn't open it to see."

"With your eyes, you can see through the box." Aunt's words are sharp, which can be resisted by most people.

The middle-aged uncle bowed his head to admit defeat, peeped at Yang Rui and said, "brother, I'll discuss something with you. What do you think?"

"Oh?"

"The mechanical balance in my laboratory has broken down, but the funds in the first half of this year have been used up. I have collected some money myself, and it's not enough to buy a new one... Just as your school bought one, I thought, could you tell your headmaster to lend it to me at the end of your week?"

This is really impolite. Yang Rui said, "it's useless for you to find me. You have to find the headmaster."

"So it is."

"It's a hundred kilometers from Xibao to Nanhu. Do you go every weekend? Is that all right? "

"If you can, you have to run. If you can't, you have to run." The middle-aged uncle has a solemn and stirring face. He can't even use the balance in the laboratory. He is really miserable.

……