Plant wax specimens, plant wax specimens should be kept in sealed and dried wax leaf specimen cabinets.
The new specimens are often disinfected by the use of drugs because of the common pests and eggs. It is to use carbon disulfide about 0.5 KG in the container, put it into the insecticide box (1.7 square meters), open the box two days later, so that the poison gas is exhausted and the specimen is taken out. Carbon disulfide gas is heavier than air oxygen. The medicine should be placed on the specimen. Or put the specimens that have not been put on the paper into the solution of 0. 5% liters of mercury (75% in industrial use), and then put them into the cupboard. Mercury is toxic and does not chemically act on metals. Do not use metal equipment. Use rubber gloves when you use it, wash your hands with soap in the north, and use the medicine to kill the specimen. It should be indicated on the paper to prevent poisoning.
In the wax leaf specimen cabinet, you should put your brain essence to prevent pests.
Classification into the cabinet specimens to be classified is easy to use. Dried specimens of plant roots, stems, and flowering fruits can be arranged in the order of the textbooks. The classified specimens are arranged according to the classification system. At present, the classification systems commonly used in specimen rooms include classification systems such as AENGLER and CRONGUIST. There should be a catalogue table on the cabinet door, and there should be a sub-label in the cabinet for easy searching.
Repair If the leaves in the specimen fall off, use a brush to brush the glue (plant glue) on the back of the leaf, stick it in a natural posture, and dry it. The branches and stems should be affixed with vinyl acetate glue and then glued to the paper. Specimens of mold and insects are washed with a brush, 95% alcohol or 10% formalin. After drying, remove the mildew with a brush. The damaged paper and cover paper should be replaced with new ones.
Move the specimen, keep your hands and feet light, and don't flip it upside down. Into the cabinet specimen, don't be too crowded. For specimens to be borrowed, it is necessary to use paper-filled packaging and pay attention to moisture.
Plant seed specimens should be selected from new seeds that are free of pests and diseases. After removing impurities, they should be dried, put into seed bottles, and labeled, and checked frequently to prevent mold and insects.
Boxed specimens such as insect specimens and plant pests and diseases The abdomen and soft parts of large insects and dried larvae are prone to mildew. The ampoules in the boxed insect life history, pests and other specimens are easily broken and the labels are detached, and the damaged parts can be replaced by °C °C. The damaged part of the plant can be repaired according to the method of repairing the wax leaf specimen. Anti-insect and moisture-proof drugs such as camphor and silica gel should be placed in the boxed specimens.
Other fossil specimens should be protected from vibration and collision. When damaged, they should be filled with gypsum and glued with polyvinyl acetate glue (milk white glue). The egg shell of the bird egg specimen is damaged, and it can be removed by splicing. The circulatory system dry specimen is made of celluloid for filling. It is brittle and must be shockproof. If it is damaged, it can be bonded with a brush and acetone.
Dipping specimens and materials
Both the infusion specimen and the experimental material should have a label, the label should be solid, and the outside should be waxed and placed in a biological cabinet by the number. Specimen bottles should not be shaken to avoid breakage, and should not be placed in direct sunlight, high temperature or below 0 °C to prevent melting of the sealing wax and cracking of the glass bottle. Plant experimental materials can also be inoculated without liquid medicine. Put some 20% formalin-coated cotton wool on the bottom of the sample bottle, cover the white paper, and put a small amount of 20% formalin liquid in the plastic bag when the sealing material is used for a long time. Then put the experimental materials and tighten the bag. It can also be stored for a long time. It is necessary to use the register to record the date of manufacture and the formulation of the liquid medicine for each bottle of the specimen, so that it can be checked and processed in the future. The original color specimens should be placed in a biological cabinet with a door to prevent fading due to sunlight. The solution is yellow and turbid and the specimen is exposed to the liquid surface. It is necessary to replace and replenish the new liquid in time (plus 10% formalin, etc.).
If the stored experimental material is going to deteriorate, increase the concentration of the preservation solution. Immersion of the transparent specimen produces a lot of air bubbles that can be withdrawn by a syringe. If the font size is dropped on the specimen, use the cotton wool to blot out the peeling part, and paste it with gelatin solution (gelatin, dipped in 50 ml of water for a day, then heat to dissolve in water). If the glass plate of the fixed specimen is broken, use a diamond knife to draw the glass, use the grinding wheel to smooth the four sides, and re-fix it.
It is advisable to change the solution and seal the bottle in the summer, because the cap is easy to open in summer, turn the glass ball on the lid, and then pull out the cap. It can also be used to remove the sealing wax and open the bottle.
Stripping specimen
The stripped specimens should be placed in the biological cabinet according to the number. If they are too large, they should be stored in a glass cabinet. They should be protected from moisture, corrosion, dust, insects and rodents. Use silicone or quicklime (packed with two layers of gauze) as a desiccant in the cabinet, and use a camphor preparation to deworm and mold (wrap with gauze). Stripped specimens should not be exposed for a long time on the top of the cabinet. Newly stripped, unseasoned specimens should not be placed in the biological cabinet.
Smoke can be used to eliminate pests. In the spring, put the specimens in the sterilization box, put the dishes in the box, put the bowl on top, put the sulfur in the bowl, put the iron strip on the bowl, point the sulfur, seal the lid. After two days, open the lid and take out the specimen and store it in the biological cabinet.
If the vertebrate specimens are damaged, animals of similar type, sex and size should be selected. The corresponding parts of the damage should be cut off, fixed with a pin, coated with 40% formalin solution, and dried for repair. After repairing, shape and color. If the fish's fins, reptile's phalanges, etc. are broken, they can be cut into two slopes and glued with polyvinyl acetate. The large mammalian defect can be filled with putty, and then the armpits, abdomen and other hairs are removed, and the polyvinyl acetate glue is used to put on the putty.
Bone specimen
Bone specimens should be protected from vibration and slamming, and covered with a back cover. Moisture degumming, the joints are easy to fall. The sun shines for a long time. When the bone breaks or falls off, a polyvinyl acetate adhesive can be used (fixed with a wire).
Sliced ​​specimen
The sliced ​​specimens are numbered in a wooden box with a special compartment slice. A lot of grooves are engraved on both sides of the box, and both sides of the carrier sheet are inserted along the grooves so that the slides stand upright in the box. Each box can hold 50~100 pieces. Place the box straight so that the specimen remains in a flat position. There should be a list of the number and name of each specimen in the box for easy access. The wooden box should be placed in a dry place to avoid sunlight. Slices can also be saved with slide specimen holders.
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