Ge Xinxin put on straw slippers and took off her coat. [No pop-up novel website] Stepping on the wooden floor made her sore ankle feel relieved. She first went to the bathroom to brush her teeth and wash her face, set the alarm clock for 0:30, then picked up a blanket and covered herself with a rattan rocking chair to sleep.
The old-fashioned mechanical alarm clock brought by "Bell..." often needs to be calibrated. The only advantage is that the sound is loud enough to wake up an elephant. Ge Xinxin tidied her clothes a little, washed her face with cold water, and returned to the laboratory. Leaving only the red flashlight behind again, she took out the silver bromide gelatin she had just put in the box, first poured off the water on the surface, and then wrapped some gelatin with a piece of white cloth that had been boiled in boiling water and dried, like squeezing milk on a cake. Repeat several times to squeeze all the gelatin into a straight line into a large beaker with 3 liters of distilled water. Shake the beaker gently, pour out the water in the beaker after a few minutes, and add 2 liters of distilled water. After repeating this 5 times, pour out the water. Heat the gelatin again until it melts, stir for 10 minutes, let it sit for a while, and pour off the water on the surface.
After achieving this step, Ge Xinxin let out a long breath. This is the most tiring of all the steps, and once completed it is not that difficult. Take out a simple coating device you made. It is actually two parallel guide rails spaced 30cm apart and a glass strip that has been polished to prevent scratching your hands. Ge Xinxin carefully pinched the edge with her hands, took out a 15 glass piece that had been cut, washed ten times with distilled water and soaked in ethanol for a day, and placed it in the middle of the guide rail and fixed it.
These glass pieces were specially ordered by her in the name of the laboratory a few days ago and were just delivered a few days ago. The glass factory has a workshop dedicated to making supporting glass instruments and consumables for the laboratory. To meet the laboratory's requirements for high precision and purity. These glass sheets are manufactured to the highest degree of uniformity possible. However, Ge Xinxin was not confident about the quality control of the glass factory. She asked a trainee laboratory technician to use a micrometer to measure whether the thickness of the glass was uniform one by one.
There were a hundred glass plates sent, and the trainee laboratory technician measured them one by one with great patience. Forty-three spare pieces were selected according to the standards given by Ge Xinxin.
The thickness errors of these 43 glass plates are within the acceptable range. But she only plans to make 20 slices today. She glanced at the level on the table to confirm that the current table was level, then she scooped a spoonful of gelatin and poured it evenly on one side of the glass piece, and used a glass strip to spread the gelatin evenly along the guide rail. In this way, she made 20 pieces of glass coated with silver bromide gelatin. Carefully put desiccant into the bottom of the grooved wooden box filled with glass pieces, cover it, and put it into the cabinet together with the box containing the beaker containing gelatin - it had been measured with a level beforehand and adjusted to a level state.
She made dry plates of photographic glass, although the smoothness of applying them with glass strips was limited. But as long as the glass plate is qualified, it won't be a big problem. The glass dry plate emulsion is not as micron as the film, generally 0.5-1 mm. A little error is not a big problem. On the contrary, it must be kept absolutely level while waiting for drying after application. Although the fluidity of gelatin is not good, once it is tilted, it will still cause flow and problems will immediately occur.
Ge Xinxin finally shook her sore arm. Turn on the lights. After tidying up a bit, I left the laboratory. At this time, the sky in the east has begun to turn fish belly white.
Two nights later, Ge Xinxin brought a small suitcase from her dormitory. Take out a teibsp;3000 and two film cassettes from inside. After closing the curtains tightly, she used her own glass knife to cut two dry glass plates into 4x5 inches under the light of a red flashlight and put them into the film box. The rest were put back into the wooden box and covered. Then, she put the camera and film box back into the suitcase, locked them in the Lingao production safe in the laboratory.
The next day happened to be a nice sunny day. In the afternoon, Ge Xinxin took out the camera body from the suitcase and installed the p65+. Set the ISO to 50 and mount the apo lanthar 210mm f4.5. Set the aperture-shutter to f8, then increase the shutter speed starting at 1/25 and working your way up to 1/200. Immediately, I replaced the back with a film cassette, took one shot at shutter speeds 1/12 and 1/25, and put away the camera, back and film cassette. Putting the film box alone in the laboratory locker, Ge Xinxin locked the suitcase back into the safe.
Back in the laboratory, Ge Xinxin opened the locked drawer at the bottom of the medicine cabinet and took out several bottles of reagents wrapped in black paper. When you open the package, the "National Medicine" label with obvious 21st century characteristics shows their origin - precious medicines from the original time and space. It’s not that Lingao’s chemical industry department can’t manufacture some of these drugs, but it’s that they can’t make them analytically pure. For the sake of caution, Ge Xinxin decided to use the spare parts from the old time and space. She picked out sodium thiosulfate, methamphetamine sulfate, hydroquinone, and sodium sulfite, then put the rest of the reagents back in the drawer. Then, she found borax from the top of the medicine cabinet and put it on the laboratory table.
"I'm afraid the only comfortable thing here is having someone help wash the beaker." While talking to herself, Ge Xinxin took out a large 1L beaker. Add 750ml distilled water to the beaker and heat it on a gas lamp. Then she entered the balance room, turned on the constant electronic balance, and carefully weighed 2.5g of methamphetamine sulfate, 6g of hydroquinone, and 2.5g of borax. Then she used the tray balance to weigh 125g of sodium sulfite, poured it into the beaker, and carefully stirred until The temperature of the liquid in the cup rises to 50c, and then the heating stops. Add 500ml of cold distilled water, stir evenly and pour into a 1.25l Coke bottle. Carefully squeeze out the upper air, cap the bottle and label it as "Developer". She then weighed 300g of sodium thiosulfate with a pallet balance, dissolved it in 750ml of hot water, added 500ml of cold water, put it in a Coke bottle, squeezed out the air, covered it and labeled it "fixer". Soak both bottles of liquid in a cold water bath.
Ge Xinxin then put all the reagents back into place and cleaned the electronic balance. After the power is turned off, put in a glass cover containing desiccant. Then she called her trainee experimenter and asked her to tidy up all the instruments and prepare a large basin of warm water.
"The flask must be cleaned!" Ge Xinxin said this without getting tired of saying it. She didn't have much affection for the two girls under her as a teacher and student. She never gave them standards to work and taught them to work. Pretense.
After doing all this, she took off her lab coat and once again took the commuter bus to Bairen to have dinner - this time she planned to go to the farm tea house, which was said to have several new "Western foods": Indian flying pancakes and Spanish seafood fried rice. such as. She decided to go for a change.
After eating, she returned to the elders' residential area in Bairen City, where she also bought an apartment in accordance with the policy - it was the smallest apartment. Because she mainly sleeps in the dormitory, she uses this place as a storage room. It is filled with personal belongings. In addition to the luggage she brought with her, there are also various things purchased in this time and space, mainly bought at the trophy auction. Various objects, including some of her favorite European groceries - real handmade products from Germany, France, Spain and Italy. If you can take some back to the old time and post them on Weibo, that would be great It arouses the envy of many girls.
But she came back to the dormitory mainly to take a good bath - there are only public bathrooms with showers in the laboratory dormitory building. After taking a shower in the dormitory, Ge Xinxin applied a little bit of herbal essential oil extracted by herself - a habit she inherited from her studies in France - and then boarded the train to the laboratory. The spring temperature in Hainan was often above 20°C in the original time and space, but during the 17th century during the Little Ice Age, it was only about 15°C on a clear night. The evening breeze was mixed with moisture, and she suddenly felt a little cold.
"The hair dryer can't be used, it's really troublesome." She couldn't help but complain a little when she thought about the hair dryer that she hadn't used a few times since the D-day and had been sleeping all the time - the industrial sector was "saving electricity for power generation" recently, and it was noisy. The electricity consumption of senior citizens has been greatly reduced.
Ge Xinxin put her hair back behind her ears with her hands and looked out of the carriage. Although the factory area, which has an order of magnitude "advantage" compared to other places in the world, has been polluting hard, the night sky in the 17th century still has a splendor rarely seen in the 21st century. Sirius in the southern sky declares its status as a bright star of magnitude -1.47 with its extremely dazzling brightness.
"Just wait, I will record your spectra again in a year." muttering softly to herself, Ge Xinxin picked up her handbag and shook the rope leading to the driver's cab to notify the driver to stop at the upcoming chemical plant passenger terminal. .
Back in the laboratory, Ge Xinxin took out a cleaned rectangular glass shallow dish, poured 1cm of developer into it, put it into the 22C water bath that had just been mixed, and also poured a plate of fixer into the water bath. Also prepare a plate of 5% acetic acid and a large beaker of distilled water. After taking out the film box from the locker, she arranged the darkroom again and opened the film box under the red flashlight. Take out the glass plate, put it gently into the shallow dish of developer, and look at your watch. Gently shake the shallow plate for 5 minutes, then take out the plate and put it in 5% acetic acid for 10 seconds. Quickly take it out and gently shake it in distilled water for a few times, and put it into the fixer tray. Shake the shallow plate gently for 5 minutes, take out the plate, wash it with distilled water and insert it into the plate rack. After also developing another plate, Ge Xinxin turned on the light, poured the used developer and fixer into special recycling bottles, and put the fresh ones in a light-proof cabinet. Then she called the trainee laboratory technician on duty and asked her to pack up the instruments, and she signed the registration book and left the laboratory. (To be continued...)
