Products that can’t be replaced by testing instruments

【Hot attention of Chemical Machinery Equipment Network ] Today in the 21st century, with the rapid economic and social development, all walks of life are also in full swing, and the various occupations derived from this are also attracting various types of jobs.
Types of specialized talents.
Nowadays, perhaps the "three hundred and sixty lines, the top picks" we used to say is no longer applicable to the current status quo of thousands of different industries.

 

Among the many professional positions, in addition to the traditional positions that we are familiar with daily, some emerging positions have also emerged, such as connoisseurs, perfumers, hotel testers, and tasters.
For most people, these emerging professions are not only easy and fun, but also well-paid, which is aspirational.
However, what you don’t know is that there is another profession that sounds confusing at first, but the required skills cannot be developed overnight, and the content of the job is not as easy and interesting as we think.
This job That's-the water quality master.
Yes, you heard it right.
As the literal meaning is, in addition to tasting tea and wine, in the water quality testing process, you also need to have a professional who appreciates water quality, that is, a water taster.

 

In fact, the tap water that we can safely drink daily needs to go through a series of water quality testing items before it is delivered to thousands of households.
At present, there are many testing standards related to drinking water in my country, including "Standard Test Methods for Drinking Water", "Sanitary Standards for Drinking Water", "Glass Electrode Method for the Determination of PH Value of Water Quality", and "Determination of Hexavalent Chromium in Water Quality II.
Benzenecarbazide spectrophotometry" etc.
Among them, in the national "Sanitary Standards for Drinking Water", it is clearly stipulated that there are 38 routine testing items for drinking water.
The testing indicators include 4 microbiological indicators, 15 toxicological indicators, 17 sensory traits and general chemical indicators, and 2 radioactive indicators.
index.
In addition, the water company's routine testing indicators are as many as 108, including the turbidity, radioactivity, and organic poison detection in the tap water.

 

　　To test the above indicators, in addition to relying on various types of* in the laboratoryIn addition to analytical instruments and technology, in recent years, with the rapid development of science and technology, the continuous development of the water quality testing industry, various types of special water qualityDetector devices which have also put into practical use, such as water toxicity analyzer, water line automatic monitoring system, the E.
coli analyzer, ion detector, the VOC monitor the like in water.

 

　　However, it should be noted that in the 106 water quality standards given in the "Sanitary Standards for Drinking Water", the smell and sensory index items need to rely on manual testing.
Work needs to give birth to a career gap, and the quality master comes from this.
Of course, the work content of a water taster is not just as simple as using one's own sense of smell and taste to perceive and recognize water quality.
Generally speaking, a water quality engineer needs to sample the water, then conduct a smell test, and then record the measured data.
In addition, the water taster also needs to receive professional water quality training.

 

　　In this series of work, smell detection is very important, not only difficult, but also strict.
It is understood that the taste of water is divided into 6 levels, namely: the intensity of level 0 is no, and there is no odor and taste at this time; the intensity of level 1 is weak, which is difficult for ordinary drinkers to detect, but odor and taste sensitive people can Awareness; Level 2 intensity is weak, and ordinary drinkers can just detect it; Level 3, intensity is obvious, and can be clearly noticed; Level 4 intensity is strong, there is a very significant odor; Level 5 is very strong, with strong Bad smell or unusual smell.
However, ordinary people can only recognize water of grade 2-5, and water of grade 0-1 can generally only be recognized by water qualityists who are extremely sensitive to smell and taste.

 

　　In fact, the reason why a water taster can quickly identify differences in water quality that is difficult for ordinary people to taste, in addition to talent, is also inseparable from acquired intensive practice.
To become a qualified water taster, you need to receive repeated professional training to strengthen your sense of smell and taste.
In addition, in daily life, in order to maintain a high degree of sensitivity to smell, the tasters also need to avoid touching all kinds of food with pungent taste.

 

　　Today, with the rapid development of science and technology, whether it is on the assembly line of industrial production, or in the deserted Gobi, or the vast sea, there are science and technology.
These scientific and technological achievements free human hands and replace humans.
Work under many difficult environmental conditions.
However, science and technology are not safe.
Whether in industrial production or daily life, there are always things that science and technology cannot accomplish.
We humans still play a major role in social development.

 

　　Source reference: Science and Technology Daily, Baidu Baike
 

　　Original title: The water quality inspection of the water quality inspection on the line that cannot be replaced by the testing instrument needs to be manually checked