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Are Moisture Analyzers and How do They Work?

2021-09-10 02:32   Fashion / Clothing   Barrie   14 views

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A moisture balance, also called a moisture analyzer, measures the amount of moisture in a substance. This is particularly helpful in food processing lab consumables as the amount of moisture can be an indicator of freshness and quality for some foods. These analyzers are also commonly used in environmental, pharmaceutical, and materials science labs. There are several techniques that may be used to measure moisture. Some techniques used include measuring water vapor released following combustion of the sample, measuring the difference in weight after removal of moisture from the sample, and measuring the equilibrium of water vapor of the sample in a closed system. Some things to take into consideration when purchasing a moisture analytical balance include capacity, precision, speed, method of measurement, software, and whether the samples to be measured come in solid or liquid form.

Moisture analyzers, as industrial weighing scale, are also frequently used in quality control and other laboratories. Moisture analysis is used in many fields to determine the water content in crude oil, fuel, sewage sludge and many other chemicals, solids and liquids.

Most moisture analyzers have a computer interface to assist with the observation and analyse in the drying process and its effects on the sample. They have the capacity to save the tests in their memory to repeat frequent testing parameters without having to set them up over and over again to assist with the elimination of down time.

How moisture analyzers work

Moisture analyzers utilize Loss On Drying (LOD) method to measure moisture. In this method, the moisture analyzer weighs a sample, heats it up to dry it, and weighs it again once it’s dry. The weight after drying is subtracted from the weight before, so the loss of moisture is determined using the loss of mass.

The heat generating system can vary from analyzer to analyzer. Some moisture analyzers use halogen and some use infrared or glass-free metal heaters positioned above a precision electronic balance. Halogen moisture analyzers are quick, efficient and responsive. These types of moisture analyzers are ideal to use where there is no single setting that heats all samples evenly.

Density balances decide the density in liquid and solid materials as per the buoyancy method. Density balances are mainly electronic, maintain accuracy and beneficial to know the density in ceramics, glass, rubber, plastics, sintered metals and other non-metallic materials.

The method of density determination, like textile balance, is denoted by high veracity and quick results. Liquid Density is measured via the buoyancy test with the glass element. On the other hand, the density in solid materials is decided by using the weight and volume of a sample.

The process of selecting chromatography sample vials for your laboratory can be complicated because there are many factors to consider as well as numerous options to choose from. This article offers guidance by providing an overview of chromatography vial options and how each can suit specific needs.

When choosing a chromatography vial, the product material is of paramount importance. Depending upon the use, either glass or plastic testing vials may be best. Begin by considering the facts and benefits regarding glass ultra clean vials.Plastic vials have their own set of specifications and benefits. It is important to note that the type of plastic makes a difference in the storage vial and its uses. Plastic vials can be made of either polypropylene or poly methyl pentene (PMP). Polypropylene is the most popular plastic material available. To put it in perspective, the recyclable containers you store your dinner leftovers in are commonly made of this as well as the plastic lid on a box of Tic Tacs. Polypropylene vials have a heat resistance of up to 135 degrees Celsius, are translucent and are used commonly in chromatography experiments.