National Beer

The rescue and relief work of the whole city was over, and the united, tense, serious and lively teaching order was restored in the department.

In the hot noon, walking on the campus where the trees are like shade, the sun shines through the green shade, and Qin Dong feels like a world away. This kind of time hits his body. As he walks, the time keeps going backwards, he really Shuttle back to college time again.

"311, Xiao Qin."

Immediately after eating, before there was time to brush the rice bowl, Li Momei's voice sounded downstairs. In this closed age, dating between men and women is still subtle and gentle. Suddenly this loud and loud shout Suddenly, many heads popped out of the dormitory upstairs.

"Squad leader, go quickly, the secretary is calling you." Chen Xiaochun smiled and winked at Lao Ran.

"Say, what kind of conspiracy are you two doing behind our backs?" At this time, Lao Ran's ridicule was naturally indispensable. He tapped the enamel bowl with his chopsticks, and he was more excited than the person involved.

"Being in beer, not in conspiracy..." Qin Dong smiled and put on his clothes, and put the rice bowl in Lao Ran's hands. "Brother, please help me brush it, and invite you to dinner..."

"Hey, you kid..." Qin Dong stomped downstairs, and there was Lao Ran's complaint from behind, "I'm waiting for you at night, please eat nine-turn large intestine..."

"Let's go." Li Momei pushed a bicycle, and when Qin Dong came downstairs, he let the bicycle handle out. "You big and small, can't you let me take you?"

Qin Dong took the bicycle, Li Momei easily sat on the back seat, and a whistle and discussion sounded behind him...

Li Momei came here, so she didn’t care about it. She was riding on the campus, and she smiled, “I told the factory manager, you are going to the factory in the afternoon, and Cui is waiting for you at the technical department. She is us. Technicians in the Test and Development Group of the Technical Section..."

In the brewery in the 1980s, the composition of technical departments was not complicated. A department was generally divided into several groups, such as the malt technology group, the brewing technology group, the microbiology group, and the experimental development group. Group, each group is equipped with two to three technicians and laboratory technicians.

"Xiao Qin,... have you... ever engaged in technology?" In the past few days, both the factory and Li Momei have been learning about Qin Dong's situation. After a long time of understanding, the factory's heart is getting colder and colder, and Li Momei can't help it. Up.

Qin Dong started as a bottle washer. He was very familiar with beer equipment, but had never been exposed to beer brewing technology. If it weren’t for the idea of ​​having a date or not, Li Momei would have no time to accompany Qin Dong. There is also a breast-feeding baby in the house.

Now that Li Momei asked, Qin Dong's answer was naturally no. This made Li Momei's last hope also emptied. She was half complaining and half joking, "Xiao Qin, you are also a middle-level cadre in the factory anyway. No, you dare to do porcelain work without diamonds?"

Qin Dong looked back at Li Momei, hey, this elder sister is really heavy, "I don't know if I have a diamond in my hand. By the way, your deputy director also said, how can I know if I don't try? "

"Okay." A squad leader and a Communist Party secretary didn’t know each other for a long time. People still solved the problem for their own factory. Li Momei was not easy to say too much. "Then come to my house for dinner. They are all classmates. Qin, you are welcome, we still have to be together for four years."

Oh, for four years, Qin Dong wiped the sweat off his head. He doesn't count time now, only distance, "Li Momei, how far do I have to ride?"

Li Momei naturally knew her weight. She deliberately swayed in the back seat, so that Qin Dong hurriedly straightened the handlebars, but she giggled and said, "You can ride, there are more than a dozen stops away..."

...

Riding to the Beibingyang Brewery, Qin Dong was sweating profusely, and his short-sleeved shirt was soaked. Li Momei was a little overwhelmed. "Go, drink some water at home and eat a watermelon to cool off. Go, don’t tell me You're welcome, I have to breastfeed the baby..."

I couldn't help her. Qin Dong looked at his watch. It was not time to go to work, and he was really thirsty. He simply rode towards the family building behind the brewery.

Li Momei's family lives in a tube building. Such a tube building has a bathroom at the end, which is also a cleaning place for a whole floor of residents. It is commonplace to line up to wash in the morning.

Walking through the narrow aisle and through the mess, Li Momei pushed open the door of her house.At noon, her wife eats at the factory. There are only two elderly people in the family. "Mom, this is my classmate. Tell Aiguo, let him go shopping at night. My classmate will eat at home."

Li Momei's mother-in-law looked at Qin Dong up and down, and finally smiled when she saw that Qin Dong seemed to be a few years younger than Li Momei.

After finally waiting for Li Momei to finish feeding the baby, Qin Dong sweated more. In the tube building, every household put the briquette stove at the door, which made the temperature in the building a few degrees higher than outside.

"No way, my family doesn't have enough points. I don't know it will be the year of the monkey until the house is divided. It would be nice to have a place to live here." Li Momei is quite generous. "Little Cui..." entered the building and reached the technical department. On the floor, she shouted, and the door of a room to the north opened, and a girl wearing plastic-frame glasses greeted her.

"Introduce, this is my classmate, Qin Dong, Qinwan Rongya Brewery, and this is Xiao Cui, our technical department."

"Cui Wei." The girl introduced herself and looked at Qin Dong. Seeing that he didn't look as big as himself, she said a few words directly to the topic, "Comrade Xiao Qin, how do you plan to extend the shelf life of beer?"

Who is Qin Dong, he can understand other people's minds with just one look, "Of course you have to test the shelf life of your beer first." It is said that it is a 30-day shelf life. In fact, some breweries have a shelf life of only two. More than ten days.

"Well, how to test? What indicators are tested?" Cui Wei and Li Momei looked at each other, intending to test Qin Dong.

Beer is a colloidal solution with low stability. During the storage process, due to the influence of the outside or the internal factors of the beer, turbid precipitation will appear. In the national standard, the shelf life of beer is measured by turbidity, and the shelf life of high-quality beer The turbidity inside should be less than 1.0EBC......

Oh, Cui Wei's face was a little surprised, she could not help but nodded slightly, Li Momei wiped her sweat, um, although she is not a technical background, but listening to Qin Dong's words is like that, "Xiao Qin, you continue to say , How do you want to detect it?"

"Use physical methods to measure your beer and see the change in turbidity," Qin Dong dragged a chair, his eyes pierced, and he seemed confident, "Through the change in turbidity, we can predict the actual shelf life of beer..."

Cui Wei was obviously thinking, "Then take a sample first, or do you tell me the method first?"

"Sampling is your business," Qin Dong said with a smile, "Go to your warehouse and choose the finished beer with the same liquid level, no leaks, and uniform bottles... After measuring the turbidity, put it in a zero degree Celsius water bath and keep it for 24 hours. After taking it out, put it in 60 degrees for five days, then put it in a zero degree water bath for 24 hours, put it to room temperature, and measure the turbidity... This is a cycle, and then put the beer in 60 degrees, and start the second Cycle processing..."

"Wait," Cui Wei interrupted Qin Dong. She hadn't heard of such a test method, nor did she teach it in the textbook. "Wait for me, I want to write it down."

Li Momei smiled, only to write down useful things. It seems that this little brother really has two brushes.

"Let's say it." Cui Wei took out the notebook and pen, re-positioned and waited for the record. Qin Dong had no choice but to say it again, "...so every sixty degrees and five days plus zero degrees one day, a total of six days is a cycle. , Until the turbidity is above 2.0EBC..."

He looked around. Cui Wei hurriedly handed him the pen and the notebook. Qin Dong lowered his head to draw on it. Both Cui Wei and Li Momei walked behind Qin Dong and watched Qin Dong draw the form on the notebook. .

"This is a table corresponding to the number of processing days in each cycle at 60 degrees and the actual number of days in the shelf life," Qin Dong looked up at Cui Wei, "understand?"

"Understood." Cui Wei replied in a low voice. Li Momei looked at them. This identity seemed to have changed. When I first came in, Cui Wei was still studying for Qin Dong. Now why Cui Wei behaves like a pupil doing the wrong test, listen. The teacher explained the same to her?

"Using these two days as the abscissa and ordinate, find out the corresponding points..."

"Relationship?" Cui Wei didn't understand. She is a secondary school student. The secondary school students of this era are second only to college students, and they are also very popular. She usually thinks highly of herself, but this kind of test method is really unheard of today. First contact.

"Well," Qin Dong drew a straight line with a pen. "A straight line can be drawn through these points. The slope of this line is the number of days that is equivalent to the actual shelf life..."

"I understand," Cui Wei thought for a while, only after a relieved expression appeared on her face, "Well, I will go to the warehouse to take samples immediately."

Li Momei let out a sigh of relief. Suddenly, her heart moved, "Xiao Cui, I also want to take this test."

"Okay," Qin Dong said with a smile. He sat and glanced up at Li Momei. Unexpectedly, he was sweeping across the undulating mountains, and he quickly lowered his head in a panic. "Children's family, you know that you are shy..." Li Momei smiled. , But her own face flushed.

"How about?" Cui Wei was called to her office by the deputy director of the factory when she walked halfway. Cui Wei's technology is already outstanding among the younger generation. What she said is technically important, deputy director. It was already thought that if Cui Wei said no, then Qin Dong would not use it for the second time.

"Take a test first," Cui Wei looked at the deputy director. "The other people didn't tell me."

Oh, the deputy factory manager was a little disappointed, but Cui Wei went on to say, "I have never done this test before, and I have never heard of it.... I think this Xiao Qin, people don’t take our porcelain without diamonds. Work..."

Oh, the deputy director looked at Cui Wei’s back. He touched his chin and thought for a while, picked up the phone and called the factory directly, “Xiao Qin from the Institute of Light Industry helps with work in our factory and gives him five yuan a day. Arrange a place to live. By the way, if people go back to school, they will send it out when the car is convenient. When they leave, bring him two bundles of our beer..."