How to choose the right eyewash

Eyewash station, emergency eyewash station water quality and water pressure
November 15, 2019
How to maintain the eyewash
January 1, 2021

How to choose the right eyewash

Choosing an eyewash product that is suitable for use in your own factory is the most important thing for the factory to provide correct safety protection products for on-site workers. There are many companies selling eyewashes in China, and it is difficult for customers to tell who is the eyewash manufacturer; at the same time, , The quality of eyewash products is not uniform, which also brings certain difficulties for customers to choose eyewash products.
The technical articles on how to correctly choose eyewash products can provide customers with certain help when choosing eyewash products.
First of all, let’s understand the eyewash:
Eyewash and shower equipment are emergency rescue facilities used in toxic and hazardous working environments. When the eyes or body of the site operator comes into contact with toxic, harmful and corrosive chemicals, the eyewash can be used for emergency flushing or showering of the eyes and body with these devices, mainly to prevent the chemicals from causing further harm to the human body, but these The equipment is only a preliminary treatment of the eyes and body.
Eyewash was widely used in most factories, laboratories, and hospitals in foreign developed industrial countries (the United States, the United Kingdom, etc.) as early as the 1980s. Its purpose is to reduce the damage to the body caused by toxic and harmful substances at work, and it is widely used in petroleum, chemical, semiconductor industry, pharmaceutical manufacturing and places where hazardous materials are exposed.
Second, eyewash selection skills:
First: Decide based on toxic and hazardous chemicals at the work site
When there is chloride, fluoride, sulfuric acid or oxalic acid with a concentration of more than 50% at the use site, you can only choose a stainless steel eyewasher made of ABS or a specially treated high-performance stainless steel eyewasher. Because the eyewash made of stainless steel 304 material can resist the corrosion of acids, alkalis, salts and oils in general, but it cannot resist the corrosion of chloride, fluoride, sulfuric acid or oxalic acid with a concentration of more than 50%. In the working environment where the above substances exist, the eyewash device made of stainless steel 304 material will be destroyed to a large extent in less than six months. The concept of ABS dipping and ABS spraying is different. ABS dipping uses ABS powder instead of ABS liquid dipping.
1. The characteristics of ABS powder dipping: ABS powder has strong adhesion force, the thickness reaches 250-300 microns, and the corrosion resistance is very strong.
2. The characteristics of ABS liquid dipping: ABS powder has very poor adhesion, with a thickness of 250-300 microns, and strong corrosion resistance.
Second: Decide according to the local winter temperature
Except in South China, other regions will have weather below 0°C in winter, so there will be water in the eyewash, which will freeze the eyewash and affect the normal use of the eyewash.
To solve the problem of water accumulation in the eyewash, it is necessary to use an antifreeze eyewash, an electric heat tracing eyewash, or an electric heating eyewash.
1. The anti-freezing eyewash is used to empty the water in the entire eyewash after the eyewash is used or when the eyewash is in standby state. The antifreeze eyewash has an automatic emptying type and a manual emptying type. In general, the automatic emptying type is adopted.
For East China, Central China, and Southwest China, the frozen soil layer in the winter is generally 20-30 cm. The water inlet pipe can be made of insulation materials to prevent water from freezing in the water inlet pipe. An above-ground automatic emptying antifreeze eyewash can be used. The eyewash device can automatically drain the accumulated water in the entire eyewash device to prevent freezing.
For the Northeast, North China and Northwest regions, the frozen soil layer in the winter is generally 50-190 cm. The above-ground antifreeze eyewash obviously cannot solve the problem of water ingress and antifreeze. The buried automatic emptying antifreeze eyewash must be used.
The eyewash device has the antifreeze valve placed below the frozen soil layer, and uses the switch on the ground to control the water intake and drainage of the eyewash device. The eyewash device can automatically empty the entire eyewash device and the water in the water inlet pipe below the ground to prevent freeze.
2. In areas that can prevent freezing and increase the water temperature, you should use an electric heating eyewash or an electric heating eyewash
The electric heat tracing eyewash is heated by the electric heating tape, so that the water in the eyewash will not freeze, which can increase the water temperature of the eyewash to a limited extent, but it cannot raise the water temperature of the spray at all. (Remarks: The flow rate of eyewash is 12-18 liters/minute; the spray is 120-180 liters/minute)
The electric heating eyewash

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