Working principle and precision of hydrometer

First, the cost is affordable. You can't blindly choose a cheap hydrometer. Generally speaking, cheap equipment is either of poor quality or without service, so the cost should be selected according to their own needs;

The second is the reuse type of similar manufacturers. The result is obviously their time and visit, or field testing, to ensure that the equipment manufacturing meets their ideal needs;

Third, the equipment protection is convenient. The equipment is as simple and durable as possible. We know that there is hostility between the buyer and the seller. If you have concerns about quality, please understand the cost of the hydrometer. If you want to be cheap, please accept its shortcomings and cheapness. It's just a marketing goal. From ancient times to the present, this is a price. The money of radish can never buy the quality of ginseng.

The pycnometer is used for the operation of seed materials in the field. When its cleanliness reaches more than 90%, it will further develop towards higher commercialization. Among them, all kinds of impurities in seed raw materials are removed, and the commercialization of seed processing is completed. It is expected that the higher the seed purity, the better, but the more difficult. Like refined gold, only 99% or more, but not 100. In order to select seed processing machinery scientifically and reasonably, we must understand and master this subject.

There are many kinds and properties of seed impurities. They are divided into geometric dimensions, large misc. And small misc. By non-existent, long misc. And short misc. By weight, light misc. And heavy misc. Even if they are all light impurities, there are still light impurities in weight, density (specific gravity) and relatively light impurities. There are different colors. Variegated particles, also known as seed impurity classification. Different impurities have different properties and removal methods, different removal methods need different machinery, which determines the diversity of seed processing machinery.