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The laboratory often has a lot of drugs, instruments and so on. A lot of these things, it is easy to make the laboratory appear crowded and messy. Laboratory once mess up, it will have an effect on the experiment, how to deal with this problem today, HUIDA will tell you a few tips to ~

Chemistry LABS generally have three characteristics

First, a lot of clutter.

There are glassware, bottles and POTS scattered; Glass conduits vary in length and are fragile and easily broken. Instruments, supplies to the oven, balance, small to nails, wire, uneven size. There are also things that look insignificant but are necessary for certain experiments, such as pieces of glass, pieces of China, bits of cloth, cotton, cotton thread, wool, mud, sand, stone, wood, wood, etc.

Second, there are many medicines.

Toxic and harmful, flammable and explosive, easy to volatile, liquid, solid, organic, inorganic, a total of hundreds of pharmaceutical reagents. And the performance is not the same, some can not be exposed to the air, encounter the air fire, to preserve in the water. Others can not touch water, water to fire, to preserve in kerosene.

Third, use more water.

Most chemical reactions take place in solution and cannot take place without water. The preparation of the vast majority of drug reagents also needs water, a large number of glass instrument cleaning can not do without water. Based on the above characteristics of “three and more”, the method of division and classification management is adopted for chemical laboratories

Instrument room and medicine room

The instrument room:

In this room are placed all kinds of chemical testing instruments except medicine: all kinds of balance, acidity meter, centrifuge and other kinds of precision instruments, as well as test tube, beaker, measuring cylinder, dropper and other glass instruments.

Drug room:

Chemical medicine room is the most afraid of piling up drugs “messy dilapidated”. Drugs piled up in disarray, expired drugs and worn labels are all safety hazards. The reagents should be stored in appropriate locations according to their properties. Inorganic and organic classes are separated, oxidizer and reducing agent are separated, toxic and harmful, flammable and explosive are separated. Appropriate safety measures are taken in each cabinet according to the nature of the drug. At the same time, the use of drugs should be registered.

General principles of instrument display and storage

1.All instruments should be put into the cabinet, in addition to the volume is too large, the cabinet can not be put, should be put in the instrument cabinet as far as possible. What cannot be put inside ark, can put on ark top or rack, add dustproof cover (if transparent plastic bag), cannot put on the ground. Instrument storage is generally large at the bottom, small at the top; Short pieces, small pieces in the front, high pieces, large pieces in the rear; Heavy pieces in the bottom, light pieces in the top; Low grade instruments are down, high grade instruments are up.

2.The instrument is generally down, flat, such as balance, microscope and many other instruments are not put upside down or side; Plastic parts, rubber parts, measuring tools and so on should be laid flat, do not rack.

3.The instrument is generally not stacked, the cabinet of instruments to maintain a certain distance between each other, must not overlap, hook. Fragile, rolling, easy scratches of the instrument, such as thermometer, test tube, collection should be on the shelf to pad some of the soft cloth, cotton paper or other boxes properly stored.

4. Avoid sunlight on the instrument, such as electronic instruments, etc., do not put in the place where the sun directly shines on the communication, such as sunlight can penetrate into the cabinet, and use curtains or cover to block the light.

5. The storage room should be kept clean, dry and ventilated. Mice, cockroaches and termites should be completely eliminated. The instrument cabinet should be dust-proof, the cabinet door closed tightly, and cleaned regularly.

6.Most of the instruments need to be moisture-proof, especially in the rainy season, and some have moisture-proof measures. Damp proof agent, such as quicklime, charcoal, calcium chloride, silica gel, etc. should be put in valuable instrument cabinet. Electronic products, electric teaching equipment should be put in the place of ventilated and moisture-proof, should be put in the upper layer inside the cabinet commonly, regular electrify, improve resistance to moisture performance. If it is damp, it should be irradiated with infrared lamp or baked with hair dryer first. It should be completely dried inside before it can be connected to the circuit for formal use.

7.Pay attention to the protection of instrument connectivity, such as color TV avoid magnetic interference, do not place magnetic objects around and at the top; Do not tape recorder, radio, speakers and other magnetic objects from the front of the color TV screen, otherwise the magnetic field will make the components of the picture tube magnetized and destroy the color purity, resulting in color distortion or the formation of spots. After the use of tape, spring, transmission belt to release the tension, a free state, so as not to cause elastic fatigue and lose elasticity.

8.To avoid damage to the instrument, such as the metal surface of the instrument rustproof layer, alloy film, alumina protective layer, to be protected, do not wipe, storage should not be coated with a layer of neutral vaseline or wax, and wrapped with oil paper. Avoid short circuit or leakage when storing the battery.

9.To avoid equipment waste, easy to evaporate drug materials, such as alcohol, ether, to pay attention to sealing, long-term storage of large bottles of drugs, to use wax seal; A small amount of the drug to be used should be stored in a flask with a thin glass cap of frosted glass (for alkali bottles, the glass cap should be coated with a thin layer of paraffin). Cover the lamp tightly when it is not in use.

10.Display and storage of instruments, to maintain complete set, integrity. Similar instruments should be put together, the same instrument host, accessories, spare parts, combined teaching AIDS spare parts, etc. should be recovered in time after use, stored in the box (box), in order to prevent loss.

Provisions for the placement of reagents in laboratories

Laboratory area

1. Personal belongings are not allowed to be stored in the laboratory work area.

2. At the end of the experiment, the equipment must be cleaned in time, the residual items of the table and cabinet must be sorted out, and the desktop and classroom must be kept clean.

3.The laboratory should often carry out small sweep, regular sweep, do clear and clean Windows, no debris, no dust, no cobweb, all kinds of articles placed neatly.

4. It is forbidden to put laboratory objects in the corridor, and empty bottles should be concentrated in the recyclable goods storage place, and should not be thrown away casually.

5.Do not use a pen on the desk graffiti, do not use sharp tools on the desk or cupboard carving pictures.

6. After use, the tissue culture bottles should be cleaned in time and returned to the right place. They should not be piled up beside the pool.

(I) Desktop management:

1.Volumetric bottle, measuring cylinder, beaker and other placed in the drawer, pay attention to shatterproof, handle with care.

2. Only common items can be placed on the table, such as pipette rack, pipette rack, tool rack, etc.

3. If it is temporarily placed, please mark it well, including (name, purpose, placing time, when to remove) and other information. When placed, it should be kept neat.

4.According to the label on the cabinet, the experimental items are placed in categories. After use, please press the original position to put back.

(Ⅱ) Management of drug cabinets:

1. Drugs shall be stored in different zones. Such as tissue culture drugs; Conventional physiological and biochemical drugs; Dangerous chemicals; Drugs needed to extract DNA, RNA and other substances.

2. There is a drug list affixed on each drug cabinet, including drug name, English name, molecular weight, molecular formula and other information, which can be checked first and then opened for search.

3.Open cabinets to light open and close, especially glass cabinets, do not force to place, in order to prevent glass cracking, causing danger.

4. After use, it must be put back in the original position. If it has been used up, please write “Used up” in the remark column on the drug list of this layer and report in time.

(III) Management of tissue culture room:

1. The relevant information of experimental materials shall be written on the identification card, including (name, material name, placement time), etc.

2. The contaminated experimental materials should be cleaned out of the tissue culture room in time, and the tissue culture bottle should be cleaned, and put back to the place where the tissue culture bottle is placed.

3. Other than experimental materials, no other articles shall be placed in the tissue culture room.

4. The tissue culture bottle should be handled with care to prevent the glass from cracking.

The display and storage of instruments is a technical work, but also an art, display and storage of good or bad, not only affect the appearance, but also directly affect the performance of instruments and equipment, service life, affect the rate of instrument integrity and experimental teaching rate.