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Section 98 Silver and Gelatin

 Dr. Zhong took it and looked at it. Among them was electrolytic silver, a secondary controlled substance - silver is not rare, but electrolytic silver is. The electrolysis industry of non-ferrous metals has not yet started, so this stuff needs to be used in smaller quantities. However, the power industry is stuck

Once the problem is solved, electrolytic copper and electrolytic silver will not be a problem.

The things below the list are more powerful. The things listed are all first-level control equipment and consumables. It can be said that they will not be self-produced within five to ten years.

According to regulations, after he signed as a professional leader for such professional materials, unless the inventory really reached the "red warning line" standard, the Planning Institute would directly approve the collection. In comparison, it seemed like a heavy responsibility. He read it several times.

, but did not dare to ask rashly: "These things are really necessary to use" and the like: in this profession, Dr. Zhong is basically on the same level as the naturalized people on the roadside. If he talks too much, he will inevitably show his timidity. He thought about it,

I think we still have to trust professionals. Besides, this project is indeed very important. Once developed successfully, it will not be a golden finger, but the black technology of the 17th century.

"I agree." Dr. Zhong took out his name stamps from his pocket and stamped them one by one in front of her. "Tomorrow I will give them to my secretary and send them to the Planning Institute -"

"If you think it's okay, I plan to take these documents to the Planning Institute in person tomorrow - my time is too tight, I can't wait to go through the official document process, and there are some things that I have to pick out myself to feel at ease."

"It's okay." Zhong Lishi nodded, "But the formalities for your document are incomplete. So, I'll give you a note first. You go with the note and the documents, and then I'll send someone to go through the formalities."

"Thank you very much." Ge Xinxin said calmly and generously.

Dr. Zhong took out a note pad on the Ministry of Science and Technology's letterhead from his briefcase. He took out the hero fountain pen and started writing rapidly. Finally, there was a signature and date.

Ge Xinxin took it and blew it carefully, then smiled and said, "Thank you. You are such a good leader."

"You're welcome." Zhong Lizhi stood up and said goodbye, "Once your project is successful, many people in the industry will be grateful for your kindness." He said jokingly.

"Don't take it seriously. It's all the result of everyone's joint efforts." Ge Xinxin said, carefully putting the document into his pocket, "I'm going to do an experiment, please go slowly."

Ge Xinxin returned to her laboratory. Her two naturalized "trainee experimenters" were still sitting on the bench in the corridor outside the door, waiting for her. Both of them were girls. In order to avoid going to work on weekdays, Ge Xinxin

Trouble. All the experimenters under his command are women, and they are all over 1.60 meters tall. The experimental equipment in the laboratory is made according to the average height of the senators. It will be very laborious for naturalized civilians who are too short to use it.

She unlocked the door with a key: her special laboratory number is No. 4. It belongs to the "Special Laboratory". Most of the experimental equipment inside comes from another time and space. Access is strictly controlled. Except for the "super laboratory" brought by the elder himself,

Except for "trainee laboratory technicians", other naturalized citizens are not allowed to enter.

Not only that, when the elders are not present, naturalized civilian experimenters cannot be present either - the first thing is to ensure safety. The safety of the laboratory. Even professionals in the 21st century will often make mistakes in barbaric operations, let alone this.

A native of time and space.

A naturalized citizen who can be an "assistant" is only one in a hundred, not just one in a thousand. If he dies or becomes disabled, it is not as easy to replace him as if he lost a laborer on a construction site.

Secondly, once an accident occurs, laboratory equipment and medicines will be lost. Some of them are "more precious than gold" - there is no place to buy them if there is gold: the commonly used 1/1000 balance alone is not the current equipment of the Senate.

industry can manufacture.

Ge Xinxin walked into the laboratory and checked the cleaning work done by the naturalized civilian laboratory workers: classifying the waste liquid according to the labels, washing the instruments, and tidying up the laboratory table. After confirming that everything was OK, she looked at her watch and said:

"You can get off work and come to the laboratory on time at seven o'clock tomorrow morning - you will work for Mr. Xu tomorrow. I have to go out for something."

It is now eleven o'clock in the evening - naturalized civilian laboratory workers do not have commuting time and work according to the schedule of seniors. When meeting seniors like Ge Xinxin, they basically only have time to sleep, eat and go to the toilet.

Already.

After letting the trainee experimenter leave, Ge Xinxin sat on the chair for a while - she was already very tired, it could be said that she would fall asleep immediately when she lay down, but she still had to sort out her ideas for applying for the project first.

Early the next morning, Ge Xinxin got up early, put an empty backpack on her back, and took her usual handbag and set off. She boarded Ma Niao's commuter train all the way to Bairen, and then stopped at the ticket office of Bobu Station.

I showed my ID and bought a ticket to Gaoshanling Station.

The track from Bairen to Gaoshanling has just been paved. Although everyone can ride it, not everyone can buy the ticket from the terminal to Gaoshanling Station: only elders and naturalized citizens with special passes

Only then can you buy tickets for Gaoshanling Station.

Ge Xinxin successfully arrived at the Controlled Materials Warehouse of the Planning Institute in Gaoshanling and quickly received the various controlled materials she applied for.

"Ge Xinxin, what are you doing with all this silver? And you also need to electrolyze pure silver. No one is interested in this except for people who are interested in electricity. And gelatin, is it possible for you to make cold dishes or jelly with this stuff?

"In the Materials Office of the Planning Institute, Sun Xiao, who was on duty, asked strangely while stamping the application form handed over by Ge Xinxin.

"Un color cret qui rend une femmefemme." Ge Xinxin put her right index finger on her lips, finished this sentence with a chuckle, then put the stamped application form into a binder and put it in her handbag, turned around and walked out of the office, leaving only

Xia Sunxiao stared at the door and muttered to himself: "Huh? This is perfume? Why is it still in stock after two or three years? Who is this girl?"

With the gelatin and silver she had received, Ge Xinxin returned to her laboratory. She first took out a set of 24# distillation equipment - despite a lot of effort, the glass factory could only produce standard mouth instruments of 14# and above.

Micro and semi-micro instruments are still "under development". But for today's work, the 24# equipment is just right. She poured a 500ml bottle of concentrated nitric acid into a 1000ml round-bottomed flask, added a few broken porcelain pieces, and then

Distill on an oil bath. Cut the 115-125c fraction, which is 68% concentrated nitric acid that has removed most of the metal ions and other impurities. Add 100g of chopped pure silver to the receiving bottle and change it to the reflux device of the water bath. Ge Xinxin then

Fill out an overnight reaction form and place it in front of the device. Take off your white coat and hang it on the hook by the door.

She boarded the commuter train leading to Bairen City to have dinner - tonight she planned to go to a merchant restaurant to eat something good to improve her life, and by the way to the cooperative to buy some daily necessities, although the goods there were far away from her own

The requirements are still far away, but at least there are quite a few that are barely usable.

At 8 o'clock in the evening, Ge Xinxin returned to the laboratory, stopped the reflux and transferred the solution to an ice bath for cooling. When she turned on the water pump, a loud noise unique to this space-time machine sounded, and she couldn't help but frown: "Really, the machinery factory has always said that

Improvement but never action." Pour the cooled reaction solution and solid into a Buchner funnel lined with filter paper and suction filter, rinse with 95% ethanol 5 times and then drain. Collect the obtained powder in a bag with nitric acid

Put it in a brown jar with a silver label, open the cap and put it in a desiccator. She then weighs 10g of gelatin and dissolves it in 350ml of hot water, adds 32 degrees of recrystallized potassium bromide produced by horsetails, stirs evenly, and keeps it at 55c. Another weighing

Take 40g of silver nitrate and dissolve it in 400ml of warm distilled water. Then she prepares 40g of gelatin without excess water.

After all the solutions were prepared, Ge Xinxin turned off all the lights and closed the curtains - in the 17th century, when there was no light pollution at night, just closing the thick baize curtains would be a perfect darkroom. Turning on the flashlight covered with red paper, she started the next step of her work

.Slowly pour the silver nitrate solution into potassium bromide-gelatin, and stir continuously at 55c for 10 minutes. Then add the prepared gelatin, stir well and heat for half an hour. Ge Xinxin puts the beaker into an opaque box and covers it

Using a flashlight, she found the light switch and turned on the light. She labeled the box and put it in the cabinet. Then she found the naturalized citizen on the night shift and asked her to dispose of the waste liquid and clean the equipment according to the procedures.

"It's already 10 o'clock, let's just finish this tonight." Looking at her watch, Ge Xinxin sighed. She left the laboratory, looked after the veteran experimenter on duty, and returned to the dormitory building on one side.

. This building was specially built by the General Office for the veterans working in the Central Laboratory of Heavy Industry. Everyone has an office with a bedroom. This is much better than the treatment in the 21st century - she and all the chemical industry employees

As we are used to, there is just a folding chair in the office.

As one of the few female veterans in the laboratory, her dormitory has a separate bathroom. The dormitory is decorated in a feminine style and is very warm, without any so-called "industrial" style. A small piece of pure wool is spread on the bamboo floor.

Handmade Persian carpets. The walls are hung with meticulous flower-and-bird paintings bought during the trophy auction. A vase-turned-table lamp stands on the solid wood bedside table. The single solid wood bed is covered with bedding made of white and blue calico - this is considered to be something the Ministry of Light Industry can get.

The most beautiful pure cotton bedding ever. The IKEA-style solid wood wardrobe made by the wood factory holds her various clothes, and there are about a dozen bags and handbags on the special shelves-several of which are from Lando.

The fake A cargo LV bag on the ship was carefully wrapped in paper and placed on the top floor. The rest were local products produced by the Ministry of Light Industry. (To be continued...)


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