Table of Contents
What is the measure of wetness?
Moisture meters are used to measure the percentage of water in a given substance. This information can be used to determine if the material is ready for use, unexpectedly wet or dry, or otherwise in need of further inspection. Wood and paper products are very sensitive to their moisture content.
How is liquid moisture measured?
The amount of water is determined by subtracting the dry weight from the initial weight, and the moisture content is then calculated as the amount of water divided by the dry weight or total weight, depending on the reporting method.
What are the standard units used to measure water?
Water in motion; i.e., flowing in streams, canals, pipelines, and ditches, is measured in units of volume per unit of time—gallons per minute (gpm), cubic feet per second (cfs), acre-inches per hour and acre feet per day. Cubic feet per second, sometimes written second-feet (sec.
Who measures moisture?
The simplest way to measure moisture content is to weigh the product, remove all the moisture, and then weigh again. Methods that attempt to remove all the water from a product are called direct methods. These range from the simple (oven-drying) to the involved (Karl Fischer titration).
How is dryness measured?
The classic laboratory method of measuring high level moisture in solid or semi-solid materials is loss on drying. In this technique a sample of material is weighed, heated in an oven for an appropriate period, cooled in the dry atmosphere of a desiccator, and then reweighed.
How do you calculate moisture content in wet basis?
For the wet basis, the amount of water is divided by the total weight of the sample (solids plus moisture). For the dry basis, the amount of water is divided by the dry weight (solids only).
How do you determine the moisture content in laboratory explain procedure?
There are many methods for determination of moisture content. The primary methods used are loss on drying and Karl Fischer titration. Loss on Drying. In this method, a wet sample is weighed on a balance, placed in an oven, and heated until the end of the drying period, i.e., until the sample reaches equilibrium.
How is liquid measured in the metric system?
The basis of fluid volume units for the metric system is the liter. A liter is about the same as one quart. That’s about it for the main units of fluid volume. There are deciliters and other metric volumes, but in class you’ll use milliliters and liters most often.
How do you measure moisture in a solvent?
This test is accomplished by injecting the material into a solvent and then adding the Karl Fischer Reagent. The reagent is added until the reaction has converted all the water into a non conductive chemical. The amount of reagent used is measured and converted into units of water.
How do you analyze moisture content?
Methods of Measuring Moisture Content: Direct measurement: water content is determined by removing moisture and then by measuring weight loss; Indirect measurement: an intermediate variable is measured and then converted into moisture content.
How do you convert dry matter to basis?
To convert this nutrient analysis from “as fed” to “dry matter”: 1) Figure the dry matter percentage. Subtract the moisture content from 100\%. In this example 100\% – 13.2\% = 86.8\% dry matter. 2) Convert individual nutrients from “as fed” to “dry matter”.