Recently, we have added a new thermostat. In the future, we will only conduct air sampling at the client's home for testing, and the rest of the steps will be carried out back in the laboratory, with the report being issued no later than the next day. For me, I don't know how long it will take to recover this additional investment, and naturally, more trips back and forth mean more hassle. However, I believe that people-oriented service and treating customers as God should not just be lip service, but should be reflected in wholehearted service.
In the past, indoor environmental testing conducted at the client's home was generally done using a quick detection method due to time constraints. After sampling, the sample was heated by hand for seven minutes, followed by the addition of a color-developing agent, then reheated by hand for five minutes, and finally compared with a standard solution using a cuvette. Based on the comparison value, the formaldehyde content in the solution was calculated, and according to the temperature, the sampled air volume under standard conditions was converted to calculate the formaldehyde content in the air. Here, we approximately assume that heating using body temperature can reach 37°C. In fact, there will definitely be differences due to variations in the degree of gripping and individual body temperatures, which may result in some reactions not proceeding completely.
The standard detection method is to place the sample after collection at room temperature for half an hour, add the color-developing agent, then let it sit at room temperature for another half hour, and finally compare it with the standard solution using a cuvette. According to the comparison value, the formaldehyde content in the solution is calculated, and based on the temperature, the sampled air volume under standard conditions is converted to calculate the formaldehyde content in the air. Of course, room temperature changes significantly throughout the four seasons; here, the room temperature refers to the commonly accepted 23°C. I use a constant-temperature incubator to ensure that the reaction conditions are maintained at 23°C. The current method of sampling at the client's home and then testing in the lab is mainly based on the following considerations:
1. Some friends have very tight daily routines. Recently, two clients from Nanfeng Huating and Picasso could only ventilate their homes for about 0.5 to 1 hour every 24 hours. Using the previous on-site detection method, testing four points would take three or four hours, making it difficult to spare that much time. This might be the main reason prompting me to improve the detection method. The new method not only improves detection accuracy but also saves a lot of time for the clients.
2. To ensure that the reaction occurs under stable and unified conditions. The constant-temperature box weighs around 25kg, which is indeed inconvenient to carry to the client's home. In fact, each client expects both accurate testing and their home not exceeding standards during the test. The use of a constant-temperature incubator effectively ensures the objectivity of the test results.
3. Over three years of client accumulation has earned me a certain level of credibility. I believe that conducting tests after on-site sampling will gain understanding and support from everyone. Imagine if this method had been adopted three years ago, it would have been indistinguishable from other market detections in the eyes of non-professionals, and it would not have led to the current situation.
Some people call me and ask how the detection is done? Is it enough to just measure with an instrument? I don't know how to answer well. In fact, it's like going to see a renowned doctor; what we value is the doctor's experience, knowledge cultivation, and comprehensive judgment ability. The test results are not the goal; obtaining the correct response measures is the fundamental purpose of seeking medical help. Therefore, while detecting, I analyze the size of the room, the arrangement of decorations, the placement of furniture, and the structure of panels with targeted purposes, detailing the temperature changes inside the room during the closed detection period, striving to master detailed data from the detection site, and frequently exchanging ideas with some furniture and building materials dealers. Currently, indoor pollution detection across the country is showing a trend towards two extremes: one direction is establishing regular qualified laboratories responsible only for air quality test results without focusing on pollution source analysis, with prices far beyond the reach of ordinary people; the other direction is profit-driven detection aimed at rapid treatment, treating detection as a bait and using sampling instruments as props, leading to impatience and causing extreme dissatisfaction among the public.
Innovation is both an opportunity and a challenge. Although improving cultivation and level through self-study is quite arduous and difficult, taking it as a hobby brings many joys. Let me conclude with a phrase from TV - "I enjoy the fun of exploration, you share the fruits of exploration!" Thank you for patiently reading my boring explanation, wishing you a happy New Year!
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