Precautions for the use of iron frame? The iron frame is used to fix and support various instruments, and the iron ring can be used instead of the funnel frame. Generally, it is often used in experimental operations such as filtration, heating and titration. Let me share the precautions for using iron frames. Let's have a look.

Precautions for the use of iron frame 1 What is an iron frame?

Iron shelf is a supporting tool composed of iron plate and iron bar.

The iron frame is used to fix and support various instruments, and the iron ring can be used instead of the funnel frame. Generally, it is often used in experimental operations such as filtration, heating and titration. It is one of the most widely used instruments in physical chemistry experiments. Usually used with alcohol lamp.

Matters needing attention in using iron frame

Experiments are often heated with a long burette or a beaker. At this time, it is necessary to put these devices at a suitable height with the help of an iron frame to facilitate the experiment. To support the burette, a burette clamp should be clamped on the iron frame, and the burette can be fixed by clamping on the burette clamp. When you put the beaker, you should clip an iron ring on the iron frame, put an asbestos net on the iron ring, and put the beaker on the asbestos net.

First, clean and dust.

It is best to use pure cotton knitwear as a rag to wipe the surface of wrought iron furniture. It is best to use a fine soft wool brush to remove the dust in the recess of furniture and the dust in the embossed pattern.

Second, avoid bumping.

Iron frame should be handled with care; The place where the iron frame is placed should be a place where hard objects don't often meet; Once a place is selected, it should not change frequently; The ground where the iron frame is placed should also be kept flat, so that the four legs of the furniture can touch the ground smoothly and smoothly. If it is unstable, wrought iron furniture will be slightly deformed over time, which will affect the service life of furniture.

Third, stay away from acid and alkali.

Acids and bases are corrosive to iron. If acid (such as sulfuric acid, vinegar) and alkali (such as methyl alkali, soapy water and soda water) accidentally touch the iron frame, immediately rinse the dirty place with clear water and dry it with dry cotton cloth.

Fourth, eliminate rust.

If the iron frame is rusty, don't polish it without authorization. If the rust is small and shallow, it can be coated with cotton yarn dipped in engine oil. After a period of time, the rust can be eliminated by wiping with a cloth. If the rust has expanded and become heavier, please ask relevant technicians to repair it.

Fifth, isolate moisture.

Indoor humidity should be kept within the normal range. Keep furniture away from humidifiers. Humidity will cause metal corrosion, chromium plating and peeling. When cleaning, avoid cleaning the iron frame with boiling water. Wipe with a damp cloth, but don't rinse with running water.

Sixth, stay away from the sun.

The location of the iron shelf is best to avoid the direct sunlight outside Liu window. Exposing the iron frame to the sun for a long time will discolor the paint surface; The colored paint layer cracked and fell off, and the metal was oxidized and deteriorated. If you can't move the furniture in strong sunlight, you can use curtains or blinds to cover it.

Precautions for using iron frame 2 Table of Use and Precautions for Iron Frame

Use:

1, the iron frame is used to place and fix the chemical reaction device, making the reaction operation safe and convenient.

2. According to different chemical reactions, the iron bar can be equipped with additional instruments that can move up and down, such as iron ring, flask clamp, burette clamp, condenser clamp and iron clamp.

3. If heating is needed, heating devices such as alcohol lamps can be placed on the iron frame.

Precautions:

1. The iron frame is made of iron, and it is equipped with iron rings and iron clips of different sizes, which can be moved up and down to fix or place reactors. The iron ring is divided into different sizes, and the iron clip has a flask clip and a condenser tube clip. When clamping the glass instrument, it should be padded with paper, cloth or rubber, and the tightness should be moderate to avoid crushing.

2. The vertical line passing through the center of gravity of the iron frame with reactor shall not rotate and slide down, and its vertical foot must be in the base to prevent dumping.

Need to use iron platform:

1, experiments are often heated with a long burette or a beaker. At this time, it is necessary to support these devices at a suitable height with the help of iron frames to facilitate experiments.

2. To support the burette, a burette clamp should be clamped on the iron frame, and the burette can be clamped and fixed on the burette clamp.

3. When putting the beaker, put an iron ring on the iron shelf, put an asbestos net on the iron ring, and put the beaker on the asbestos net.