Hello, everyone: As the saying goes, food is the most important thing for the people, and I would like to pay tribute to you who are engaged in the cause of heaven. Testing instruments in food enterprises are an important means to ensure food safety and quality, so what kind of instruments are suitable for enterprises to purchase? I think there are tens of millions of entrepreneurs, tens of thousands of elites and ordinary employees with four-digit incomes in the enterprise. But there is one thing in common: China people with yellow skin and black hair. However, once some enterprises purchase instruments, they take imported and domestic instruments as the standard to distinguish between good and bad instruments, while once they purchase domestic instruments, they are measured at absolute low prices, thus losing the purchase of high-quality and cost-effective instruments. This is a big loss for the enterprise. Here I will share and discuss with you in three points. Even if it is a brick to attract jade. 1 the difference between expensive and good instruments. Some enterprises "money is not a problem, choose expensive ones to buy". Expensive, big-brand and large-scale instruments enrich the laboratory, which leads to high cost consumption, unbearable maintenance fees and inefficient utilization. A lot of cash turned into a vase for exhibition. This is not an admirable laboratory. 2 the choice of big brands and cost performance: the high price of big brands is their premium to the market, and purchasing big brands is the most convenient for specific purchasers: the risk is small and can be shown off, even if there is a problem, it can be shirked. Over time, some laboratories have become exhibition rooms of other people's brands, actually dwarfing their own brands. Spend a lot of money to build other people's brands. In fact, what enterprises need is instruments suitable for their own scale and requirements, and in terms of cost, what they need is instruments with high cost performance. And this ability is necessary and difficult for enterprises. This puts forward higher requirements for purchasing personnel: performance, speed, quality, precision, price, brand, word of mouth and other issues come one after another. A laboratory with suitable equipment, reliable quality, up-to-standard accuracy and low cost is respectable. 3 Requirements for instrument selection As users of instruments, they are generally not as familiar with instruments as merchants. Therefore, we must first communicate and understand with merchants to obtain the performance and indicators of general instruments. Due to the uneven ability and integrity of merchants, it is difficult for buyers to judge. A we should pay special attention to some indicators that are obviously higher than those of ordinary enterprises, and pay more attention to the internal technical support of this indicator. If there is no internal technical support of the instrument, it is better to touch it less. B first of all, we should pay attention to the main indicators of the instrument, and don't be confused by the functions of some fancy gestures and ignore the attention of the main indicators. C pay attention to verifiable indicators, which will give up for some bad enterprises. D Pay attention to the external and internal environment in which the instrument is used: temperature, power consumption, reagents, catalysts, water, etc., and investigate the adaptability of the materials used in the instrument to the environment. E avoid what you can't prove by saying "the most". F avoid the cheapest instrument, he may make you buy the most expensive waste. The above are some experiences of Peiou Company in purchasing instruments. Next, I will talk to you about the application fields of Kjeldahl nitrogen determinator, which is the "Guide to Choosing Nitrogen Determinants": food, beverage, feed, grain and oil, dairy products, soil, fertilizer, chemical fertilizer, animal husbandry, agricultural food, sewage treatment and biopharmaceuticals. . . . . What are the classification of kjeldahl nitrogen determinator? Classification of nitrogen determinator: 1. kjeldahl nitrogen determinator glass device (unsafe operation, narrow detection range) 2. Semi-automatic nitrogen determinator (manual addition of some reagents, automatic distillation) 3. Automatic nitrogen determinator (automatic addition of various reagents, automatic distillation) 4. Automatic nitrogen determinator (nitrogen determinator integrated with distillation and titration, which reduces human error) What are the important indicators of kjeldahl nitrogen determinator? How does PEO guarantee these indicators? 1. Measuring range: .1-2mgn (PEO heating power is 15w, patented high-efficiency condenser tube) 2. Recovery rate ≥99.5% (① Sealing: PEO nitrogen determinator adopts corrosion-resistant pipeline independently developed, with a warranty of 3 years; ② Cooling effect: patented high-efficiency condenser tube. If the condensation effect is not ideal, ammonia will escape) ③ Power: 8-1,5 W (at present, the heating power of PEO, the highest power in China, is 75-1,5, which ensures the recovery rate of samples with high and low nitrogen content) 3. Is there any makeup water for the distiller (PEO adopts double liquid level control (double safety) to eliminate the fear of dry burning)? How do PEO solve these problems? 1. The whole casing of the nitrogen determinator is rusty from the outside to the inside. (The use environment of the nitrogen determinator is determined by strong acid, strong alkali, high temperature and high pressure. The shell of PEO nitrogen analyzer is made of high-performance ABS material for automobiles and never rusts. ) 2. The alkali pump of nitrogen determinator is easy to break down. (PEO nitrogen determinator adopts constant pressure alkali addition, which solves the problem of alkali pump corrosion even if the amount of alkali liquor is accurately added.) 3. Backwash phenomenon of distillation liquid of nitrogen determinator in the market occurs from time to time. (The pressure of all pipelines of PEO nitrogen analyzer is balanced, so as to prevent the backflow of distillate.) 4. The samples with high nitrogen content are inaccurate. (Peiou's condenser tube is a patented high-efficiency condenser tube independently developed, which ensures the rapid cooling of distilled liquid with heating power above 15w, thus ensuring the recovery rate of samples with high nitrogen content. The higher the heating power, the higher the detected nitrogen content sample, that is, the wider the measurement range).