The laboratory is a place for experiments, the cradle of science, the base of scientific research, and the source of technological development. In the laboratory, what you can see is experimental tools and laboratory furniture, among which laboratory chairs are the most common. However, have you ever thought that the laboratory also needs a good chair? Because a good chair can allow you to "sit and talk without backache".

A good laboratory chairs should meet 5 criteria:

1. The height is equal to the length of the calf: the height of the chair should be approximately equal to the length from the foot to the knee, so that the feet can be placed flat on the ground, the thighs are parallel to the ground, and the calves are perpendicular to the ground, so that the feet can be kept in the most natural state.

2. The laboratory chairs surface is approximately equal to the length of the thigh: if the chair surface is too long, there will be a gap between the back and the chair back, and the back cannot be effectively supported by the chair back; the shorter the chair surface, the more weight the buttocks bear on the body.

3. The back of the laboratory chairs should have a forward curve: When a person is sitting, the weight of the upper body is concentrated on the waist, causing the pressure on the lumbar intervertebral disc to be at least 1.5 times that of the standing position, and the back of the chair can help us bear part of the load. The human spine is an S-shaped curve that bulges forward in the middle, and the back of the chair has a little forward curvature, so that it can fit with the curved human lumbar spine, realizing "human chair integration".

4. The armrest can support the elbow joint: the height of the armrest should be appropriate, and it is best to allow the upper limbs to rest on it comfortably, without pulling the muscles of the neck and shoulders or the chest and back, waist and back due to being too high or too low. Fascia and other soft tissues.

5. It is more convenient to turn around with wheels: When you are working, you need to turn around at any time to get information or communicate with others. It is more convenient to turn around with wheels. Without wheels, it is easy for people to turn around to generate shear stress on the lumbar spine and injure the lumbar spine.