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The placement of laboratory teaching instruments

position: home >> News >> Tndustry news

The placement of laboratory teaching instruments

pubdate:2016-12-26 author: clicks:

Principle: scientific classification, neat appearance, orderly display, easy access. General education equipment


Each subject has hundreds of instruments, not only a wide range, but the size of the disparity, different shapes, light and heavy different. On the one hand, according to the characteristics of the instrument itself, the drug placed in order to facilitate the instrument intact and maintenance, on the other hand to be placed neatly, giving the aesthetic, scientific and artistic organic combination is not a very Easy to do.


A. All instruments should be placed in the rack in principle.

Equipment such as chemical drying cabinets, first aid kits, biological incubators, refrigerators, body bodily models, human skeletal models, physical light fixtures, etc., that can not be put into the rack should be placed in the proper position and dustproof jobs. Incubators, refrigerators, refrigerators, etc. Because they are prepared for the experiment, it is best placed in the preparation room to facilitate the management and work. Chemical first-aid kit should be placed in a very conspicuous place, the key should be in the side, some schools first aid kit locked, laboratory technicians do not know where the key, which is very wrong, in the event of chemical injury, Affect the first aid, can not achieve the role of first aid. Body bust model, human skeletal model, optical seat, etc. The best through the transformation of the existing instrument cabinet into it. Some of the secondary school district of the sub-district of the instrument cabinet from a layer of transformation for the three-tier, each layer of three-seat. Human bust model, human skeletal model If you can not enter the cabinet and do not put the top of the cabinet, because it is not convenient to use. Can be considered on the incubator above. Some instruments can be placed in the laboratory, such as chemical tube rack, square seat bracket, biological microscope can be placed on the experimental table below the table. Physical laboratory use of the square seat bracket as the frequency of use should not be placed on the experimental table. Some tool-type instruments (hand drills, etc.) can be placed on the preparation table. Wind instruments, the highest minimum temperature meter and other meteorological instruments, conditional schools should establish a small weather station.

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B. Classified according to the catalog.

Chemical, biological, natural disciplines in accordance with a class number of the nine categories placed, that is, metering, general, special, model, specimens, wall charts, glass, drugs, materials tools placed. Due to the large number of physical dedicated instruments, physical instruments in accordance with the two categories of mechanical, thermal, electrical, optical order. The instruments in each category do not have to be placed in the order of numbering. Chemical drugs can be classified according to the order of the two categories placed, can also be placed in accordance with certain rules to facilitate the use of. Dangerous drugs should be separated from the general drugs, general drugs should be organic and inorganic separation. Inorganic drugs can be metal, non-metallic, oxide, acid, alkali, salt, indicator and other order placed. Organic drugs can be functional groups such as hydrocarbons, alcohols, carbohydrates and other order placed, the conditions of the school should be placed in the instrument cabinet classification of chemical reagents label.


C. Instrument cabinet in accordance with the order of categories on the instrument catalog clockwise flexible placement. Clockwise is the people's visual habits. For example, physical mechanical equipment and electrical equipment types and quantities, you can put a row of cabinets are all placed mechanical or electrical equipment, thermal, optical, glass and other types of equipment placed in the same cabinet. Specimens, drugs and other equipment School laboratories can also be decided according to their own circumstances. The order of the instrument classes has only relative significance. Elements of the periodic table is arranged according to the size of the atomic weight, but there are exceptions, the atomic weight of eighteen elements will be on the nineteenth element of the atomic weight of potassium, twenty-seventh element cobalt atomic weight than twenty-eight element nickel Big. A group of cabinets can only be posted in the middle of the middle of a large label, equipment placed in the cabinet should be marked with a large label-based, even if the instrument cabinet put a few categories of equipment can only be attached to a large label. A cabinet attached to two or three labels, although in line with the actual, but it is very uncoordinated. Location card to do the number of accurate, can not be omitted, the location is appropriate. A set of cabinet to set a location card and a number of cards, the location of the card should be placed in the upper half of the instrument cabinet, the height should be appropriate to the height of ordinary people, easy to view; location cards and bags to be unified on the cabinet The location card is required to fill in, note the number of pencil to be used to write the position card to fill in the name and quantity of the instrument must be in-kind with the material in the same place, Consistent, do not have omissions and errors. Specimen cabinet because of its bright, how to put the school can be dealt with according to specific circumstances, but we must pay attention to the overall coordination.


D. in the same group of cabinets, to be on the next dense; Yan Yan put the upper part of the weight of the lay down; liquid reagent put down the Department. In the same layer, to do in the high-low.


E. Instrument cabinet equipment position is relatively fixed; to be neat and clean; have a gap between different instruments, the rational use of equipment cabinet space.


F. Instrument can not be stacked, to be placed. Students with three small table (voltmeter, ammeter, sensitive galvanometer), the tray balance instruments must be flat. Thermometers, power meters, etc. must be placed vertically. All formal goods outside the box has a "up" sign, which is to protect the basic requirements of the safety of goods. Instrument should be put, not only play a beautiful role, more importantly, in order to ensure the performance of the instrument. Is placed flat. Light seat, ramp car, etc. Once the stack will slide or slope deformation; meter stack will make the gossamer is always in working condition, affecting life expectancy.


G. Instrument accessories to be placed along with the main part, not separated, such as balance and weight, multimeter and table pen, glass rods and silk, plastic sticks and fur and so on. The equipment consists of several components, such as crystal lattice models (salt, graphite, diamond), centrifugal mechanical models (governors, dryers, separators), demonstration pulleys (single 2, Three and 2, three string 2, can be card 2) and so on. If the armature pieces have been lost, the magnets must be opposite to each other to form a closed magnetic circuit, so as to avoid the loss of magnetism. The magnets can not be separated from the magnets. Tray balance under the gravity of the rubber jacket, is to prevent the lever in the move when the blade on the edge of the injury. Should be completed in the experimental table on the sheath to take place.


H. Some of the equipment requirements ①. Glass apparatus of the heating apparatus of the wall is thin, easy to break, placed in the partition should be blown plastic paper; burette most special system to do a shelf; Bottom flasks are best drilled in the partition of the instrument cabinet, the round-bottom flask bottleneck inverted in the hole, so that both safe and beautiful. ②. Included in the Ministry of Public Security, "highly toxic substances in the table," the first Class A inorganic highly toxic yellow phosphorus, included in the second category B inorganic toxic substances catalog of mercury nitrate, barium chloride, bromine management In accordance with the State Council issued in 2002, "Hazardous Chemicals Safety Management Regulations" for. Other dangerous drugs to double the double lock management, the use of limited registration. Chemicals must have special room storage, if you can not do single-chamber storage, must also be stored with other types of equipment sub-cabinet. To avoid the balance of metal components such as more equipment by the drug corrosion.

③ specimens specimens should be based on specimens collected by the specific circumstances, follow certain rules for display, to be conducive to education and teaching. Each specimen should have a simple explanation or explain the card.

④. Disc placed: some of the conditions of the implementation of chemical laboratory disc placed, the experimental teachers to a good combination of experimental equipment fixed into the enamel (stainless steel) plate placed in the instrument cabinet placed. This method is particularly suitable for parallel classes more schools, in a certain Chengdu to reduce the burden on experimental teachers. In general schools can be used for chemical demonstration of experimental devices.

⑤. Bundle placed: wire, test tubes, ruler and other slender group of equipment, with bundles of rubber band. Should be "five" or "ten" for the binding unit quantity. Flip chart is best coated in the back of a layer of glue, paste gauze, made of hanging shaft, will be rolled up to place, to avoid the loss caused by folding many times to extend life.

⑥. Box placed: magnifying glass, glass bricks, slices, small lampholders, single-pole switches and other small pieces of equipment should be placed into the box placed. In this way, the volume of the cabinet can be effectively utilized. Slice must use the slice box, and slice inserted into the slot, or even into the box, but also easy to damage. Some instruments should be stored inside the packaging, such as tray scales, sliding rheostat, primary experimental box.


I. To promote the creative display of hundreds of instruments placed to us to reflect the creative opportunities.

Take the balance as an example, suppose we use a layer of instrument cabinet placed it, there are many ways. You can put the balance on one side, the weight on the other side; can also be placed on both sides of the balance, the weight on the middle, the two methods, obviously the latter one better than the former. A school, will have a balance inside the packaging placed on both sides, each five rows of four, the middle weight, weight box placed the same color in the instrument, and then remove the packaging of several balances on the front, Jiaoren looked very comfortable.


J. Unnecessary instrument handling advice

There are now, but the number too much, more than needed; middle school high school equipment, primary school in the secondary instrument, can report to the higher authorities, asked to tune out, support outside the school. When transferred out, should be timely account processing. The original catalog, and now canceled; the original group, and now the demo, if you can not use, in accordance with the provisions of retirement. If still intact, do not enter the custody account, and do not put the instrument cabinet, should be registered book, packing storage into the warehouse custody.

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