Datang: My father is the head bodyguard

Chapter 406 The first preparation of penicillin

Zhao Zhe hugged Lu Ru'an and followed Zhao Nanqing upstairs. Li Chengqian had nothing to do, so he simply prepared to test it first. Li Chengqian disinfected it with the help of his assistant, put on all the equipment and went to the backyard.

Li Chengqian walked into the glass laboratory and took a transparent glass jar from the cabinet labeled "sterilized".

I have been reading the modern medicine and drugs chapter over and over again these days, and the process steps have long been imprinted in my mind. What is missing now is practice.

Li Chengqian followed the steps to prepare penicillin, carefully placing gauze and cotton into the funnel after high-temperature sterilization.

After confirming that the filtration effect was normal, Li Chengqian, with the help of his assistant, carefully picked up the two petri dishes. The mold inside was almost full.

The man held the funnel and said, "Do I need a scraper and water?"

Li Chengqian put down the glass petri dish and called a waiter over. There were fine beads of sweat on the foreheads of the three of them.

Waiter A is holding the funnel, and waiter B is holding a bottle of distilled water in one hand and a small spatula in the other.

Li Chengqian was holding a glass petri dish. Li Chengqian was careful not to vent his anger: "Come gently and keep your hands steady."

Waiter B swallowed, and with gentle movements of his hands, he quickly moved the liquid in the petri dish into the funnel, and washed the remaining liquid with a little distilled water.

Li Chengqian made sure that there was nothing left in the petri dish, and then he put the petri dish down. Guy A and Guy B also let out a sigh of relief.

Li Chengqian took rapeseed oil and poured it into a glass jar. Since he didn't know how much he needed to pour, Li Chengqian chose an amount that was roughly the same as the liquid in the jar.

At this time, Waiter B picked up the booklet and started recording various data and usage.

Waiter A picked up a glass stirring rod and began to stir the rapeseed oil and the liquid containing penicillin in the tank.

Li Chengqian stared at the glass jar in the waiter's hand with an uneasy feeling. Just when the assistant A's hands were sore and he opened his mouth to change shifts with the assistant B, Li Chengqian suddenly shouted.

"Stop! It's layered, it's layered!"

Li Chengqian asked Waiter A to slowly place the glass jar on the experimental table, while he took a sterilized wooden spoon that he had prepared long ago and gently scraped off and took out the oil and grease on the upper layer.

Waiter A saw Li Chengqian's hanging spoon and quickly took a steel tray from the side and asked Li Chengqian to put the waste in it.

Li Chengqian went back and forth several times, and finally he was almost done with the grease. Due to the constant temperature and humidity in the laboratory, the temperature was about 30 degrees and the humidity was 85 degrees, plus he was nervous.

Li Chengqian's entire face was covered in sweat. If it weren't for the mask, the beads of sweat would fall to the ground in strands.

"Sweat!"

Waiter B took out the gauze from the disinfection cabinet and wiped the sweat from Li Chengqian's face, especially the eyebrows, to prevent his eyes from sweating.

Li Chengqian squatted down, looked at the liquid level, and found that there was still a thin layer of grease. Li Chengqian made a quick decision and threw the wooden spoon in his hand into the tray.

"Go get two or three more clean spoons, quick!"

At this time, Waiter B became an errand boy. He quickly went to the disinfection cabinet and took out the spoon Li Chengqian needed.

Li Chengqian looked straight at the liquid surface, discarding the three spoons after using them once, and finally cleaned up all the thin layer of grease on the liquid surface.

Li Chengqian wanted to stand up, but he almost lost his balance. Li Chengqian fell back and said, "Leave me alone, protect the jar!"

After taking a few deep breaths on the ground, Li Chengqian got up and took out the toner that had been prepared, washed, sterilized, and crushed from the cart.

This time, Waiter B stepped forward directly. I saw that Waiter A had a sore hand while stirring, and he had to make up for it.

Helping Li Chengqian put some toner into the jar, boy A also handed over to boy B at this time to record the experimental data, such as the amount of toner.

As the stirring started, the liquid in the jar began to be absorbed by the toner, and the jar became sticky. Li Chengqian squatted on the ground and looked up from the bottom to see if there was any liquid that had not been absorbed into the toner.

Li Chengqian added a small amount of carbon powder into the tank. As the clerk B continued to stir, almost only the solid matter of carbon powder remained in the tank.

Li Chengqian quickly walked to the disinfection cabinet, took out two more glass jars, took out the toner and put it into one of them, and then washed the toner block with a small amount of distilled water.

Li Chengqian stared at the jar and stretched out his hand to Waiter B: "Sour water."

Guy B moved quickly and placed the acidic water prepared on the cart directly into Li Chengqian's hands. Li Chengqian began to rinse the toner with acidic water, and the liquid in the tank began to increase.

This time Li Chengqian started stirring by himself. After the stirring was almost in place, Li Chengqian stretched out his hand again: "Alkaline water."

As usual, a bottle of prepared alkaline water appeared in Li Chengqian's hand. Li Chengqian pulled out the rubber stopper and continued to wash the toner with alkaline water.

After stirring again, Li Chengqian carefully put down the glass stirring rod, brought another clean jar over, and asked Waiter B to get a clean funnel and set it up on the jar.

According to Li Chengqian's instructions, Waiter B combined the gauze and cotton needed for the funnel, took a shelf and fixed the funnel on the jar.

Li Chengqian brought a new glass stirring rod, held the jar containing toner and liquid in one hand, and held the stirring rod in the other to drain, and slowly introduced the liquid in the jar into the funnel.

This is a rather tiring process. Li Chengqian's hand holding the jar must remain steady, and always look for a small angle to tilt it so that the flow rate will not be too slow or too fast.

The glass rod in the other hand needs to be stabilized for a long time to ensure that the liquid will be directed correctly into the funnel.

Soon Li Chengqian's hands began to feel sore. This soreness made Li Chengqian clenched his teeth. Sweat flowed from his forehead like free money and flowed into the mask that had long been wet with sweat.

Waiter A saw that His Royal Highness could no longer hold up, so he quickly went up to hold the bottom of the jar, giving Li Chengqian some room to relax.

Li Chengqian felt his left hand loosen, but he had no time to say thank you. His eyes were still staring at the mixing stick in his hand.

Finally, all the liquid in the toner jar was introduced into the funnel, filtered and then entered the new jar. Li Chengqian shook his sore and numb arms.

"Haha, with this kind of filtering, it will take two or three more times, and it must be done as soon as possible."

Waiter A looked at the dark, yellow liquid in the tank and knew that there was probably some toner that had not been filtered out, so he volunteered to start a new round of filtration.

Li Chengqian felt that something would happen sooner or later: "The recording will be stopped for now, and I will write the experimental report later. One person will look after the jar, the other will look at the stir stick, and I will look at the funnel, and then alternate."

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