This white paper describes in detail how the drying oven method can be replaced by the halogen moisture analyzer method. The test is performed on a fully computerized Leco RC612 analyzer that reveals the percentage of moisture in a wide variety of inorganic and organic materials, including welding fluxes, ores, ferroalloys and chemical samples. We have to use the standard method with the drying oven but using a moisture analyzer would really speed up our processes. Procedure 1. Yes. METTLER TOLEDO offers a variety of high performance TGA solutions, including a sample robot for reliable, unattended operation which can be used in a wide variety of applications. The seed moisture content (Mc) is the amount of water in the seed. Procedure for water content of soil test given below, 1. As this procedure involves a lot of manual processes, the use of an intelligent balance with a built-in differential weighing application significantly reduces the risk of errors, such as those generated through incorrect handling, calculations or documentation. when coffee has a maximum of 12% moisture), or for verifying that coffee in the marketing chain is at a safe moisture content. How damp is your dank? national food regulations). 2. Moisture content is the amount of moisture in the sample given as a percentage of the sample's original (wet) weight. Where not otherwise specified use at least 30 g. Place the sample in the weighing tin and replace lid. These include two oven-dry methods, a distillation, and what the standard calls other methods. Tests can be manually conducted (weigh, oven dry, weigh) or automated (integrated weight and heating unit) with systems called Moisture Determination Balances. The loss on drying procedure can be used to determine moisture content (MC) or, alternatively, dry content (DC). Thank you for visiting www.mt.com. When your moisture analysis application requires a high level of process security and data integrity, LabX laboratory software in conjunction with a METTLER TOLEDO Excellence analytical balance is the perfect solution. In the cannabis community there has been a widespread opinion that 12 percent moisture is a good content of water for smoking in a joint that won’t go out — it’s also the percentage at which small sticks audibly snap. In general, all kinds of samples are suitable for both the drying oven and the halogen moisture analyzer. Fortunately, experience and some simple tests can help determine if the moisture content in a slab is within an acceptable range for … If you have tested the meter against these two subjective but accurate tests and the meter reads 12 percent, all is well. However, it is acceptable to use a moisture analyzer if you can prove its results are the same as those from the drying oven procedure and are of the same level of accuracy. Following this, the sample is cooled in the desiccator before reweighing. SOPs for temperature calibration, periodic sensitivity testing of the weighing unit and an overall moisture analyzer performance test. Fast analysis with the moisture analyzer is done to optimize processes and the drying oven is used for official documentation purposes. 3.1.4.1.4 Pre-caution. Truck Scales / Weighbridges and Dimensioning, Scale Indicator and Scale Controller Systems, Weigh Modules, Load Cells, Weight Sensors, Explosion Proof Scale / Hazardous Area Scales, TOC Analyzers and Real-Time Microbial Detection, Sodium, Silica and Chloride/Sulfate Analyzers, Sensor Housings and Sensor Cleaning Systems, Melting Point and Dropping Point Instruments, Automated Synthesis & Process Development. Each step requires verification by the user so you can be sure your SOP is followed precisely. Contact our Expert Team and receive assistance you require. Various methods for measuring the moisture content of wood are described by the American Society for Testing and Materials in publication ASTM D4442. The moisture percentage of marijuana is an important figure to know, but the shift in that percentage when buds go from drying, to curing, to packaging for sale are — for the most part — mysterious and subjective. Watch the video to learn more about moisture content determination with moisture analyzers. In addition to providing high weighing performance, METTLER TOLEDO analytical balances simplify the moisture analysis procedure with graphical user guidance, barcode scanning of sample IDs and automatic calculations and documentation. In this process, measuring accuracy and the resolution of the balance are extremely important. https://civilblog.org/2013/05/14/moisture-content-test-of-soil-is-2720-part-2-1973 None offers a truly objective measurement, but the community uses them all the time for want of a better system. Water may be a part of this but there may be other substances which also evaporate, such as alcohol or solvents. b) Clays, soils and other coarse materials: Use steel ball speedy moisture test. It's not only much faster but it's error-free too. Our pharma excipient method collection provides moisture methods for the most common excipients and compares them to the drying oven method. ASTM 2170, “Standard Test Method for Determining Relative Humidity in Concrete Floor Slabs Using in situ Probes,” takes a different approach to measuring moisture. The sample's temperature and drying time depends on its absorption characteristics. I’ve been using one that has a touch pad and it’s been giving an accurate reading based on the subtractive test described above. Add sample and record sample weight (wet weight), 5. The moisture content is determined by weighing the sample before and after drying and determining the difference. The technology uses a halogen radiator in conjunction with an integrated precision balance for detection, measurement and recording of sample weight during H2O vaporisation from the test procedure. Both tests are often required to fully determine the level of moisture present in a concrete floor. In our collection of moisture methods for the food industry, you'll find over 20 moisture determination methods for samples in the food and bakery ind... Collection of Moisture Analyzer Methods for Pharmaceutical Industry. 1. 3. Forget strain names, this Oregon company crafts hemp seeds with one cannabinoid in mind. Both can be used as a measure of the amount of moisture in a gas. the moisture test is properly configured, and the procedure defined for properly dealing with end-products. Determine the mass of a clean, dry container or dish, and record. Results can be printed out for your lab journal or saved on a USB stick to be saved electronically. Recent experiments I’ve performed show that there is an objective way to measure moisture content using a wood moisture meter. I have many different samples (liquid, pasty, solid, powder). Moist Test Specimen for reporting Water Content to ± 1% 2 mm or less No. How can I avoid errors when I'm recording results and doing calculations? When the application is run, LabX provides step by step user guidance on the balance. 2. 2. Furthermore, the maximum permissible moisture content in certain products may be governed by legislation (e.g. Dry content and total solids mean the same thing. Near-infrared (NIR) spectroscopy can detect the water content and activity in a wide range of materials, and over a large range of concentrations. Weigh the tin and contents to 0.01 g (W 2). Which method should I use for moisture content determination? One half of the dynamic duo behind Swami Select breaks down all the tools and gear... Why sustainable, sungrown cannabis just tastes better. Test Procedure for DETERMINING MOISTURE CONTENT IN SOIL MATERIALS TxDOT Designation: Tex-103-E Effective Date: August 1999 1. The LabX report generator enables you to create elegant reports with charts which can be printed out or saved electronically. The table below compares the two methods and provides an overview of the most important characteristics. Select a representative quantity of moist soil in the amount specified by a test. (See Note 2.) Processors also had theories on the proper humidity (and temperature) of the drying, curing and storage areas and use automatic climate control to control those factors. Testing with either method will tell you how precisely how much moisture is present, making it possible to choose a surface flooring that is appropriate. Moisture content is calculated by the difference in wet and dry weight. Therefore, do not hesitate to ask for an advice! This means the samples are at the same temperature as the drying oven. Excepted from “Marijuana Harvest: Maximizing Quality and Yield in Your Cannabis Garden.”. This requires developing a drying method for the moisture analyzer and cross-validating it against the drying oven through a series of analyses. There are three commonly used test methods for performing moisture content tests of normal-weight and lightweight aggregates. Is there a difference between dry content (DC) and total solids (TS)? Our plastics method collection provides moisture methods for the most common plastic resins and compares them to the Karl Fischer titration method. ASTM C566, “Standard Test Method for Total Evaporable Moisture Content of Aggregate by Drying,” is applicable to both fine or coarse aggregate and is the most commonly used procedure. A hundred grams of dried, un-manicured buds were weighed out, then placed in a low-temperature oven until they were crispy. Use of a barcode reader is fully supported by the differential weighing application on the balance and by LabX. When they were weighed again, their weight came to 91.5 grams, a difference of 8.5 grams from their pre-treatment weight. How are samples heated in the drying oven and in the moisture analyzer? Literature: White    Papers, Guides, Brochures. When using a moisture analyzer, the sample heats up and dries by absorbing infrared radiation from the heating element. Contact us if you don't find what you need. The drying oven method is a thermogravimetric method (loss on drying) in which the sample is dried for a defined period of time at constant temperature. This is a common misconception. There are at least two styles of moisture meters. The dry content remaining may be termed the total solids (TS). c) Aggregates: No preparation necessary. The measurement of the amount of water held within the soil, or the soil moisture content, is essential to the understanding of soil characteristics and the types of plants and microorganisms that reside in it. Back-weigh the crucibles on the balance, 7. Accurate moisture content determination therefore plays a key role in ensuring quality in many industries including Food, Pharmaceuticals and Chemicals. Using barcode labels uniquely identifies each sample. What is the difference between moisture content, dry content and ATRO moisture? Soil Moisture Content 3 PROCEDURE For fine-grained soils 1. by loss on drying, in which the sample is heated and the weight loss due to evaporation of moisture is recorded. Ans: The formula for the determination of moisture content is. After a defined time (e.g. The particular value of moisture content at which maximum dry density of a soil mass is attained for a given compactive effort and is known as the optimum moisture content (OMC). Gravimetric test is a direct and accurate method to determine moisture content by weight in concrete. Different industries use different units e.g. When I asked bud processors about this gap, some had theories about what the proper cannabis moisture content should be, but few were even willing to venture a guess when it came to quantifying a particular sample. Our guide to moisture analysis provides information about the key points which are important for working with moisture analyzers and helps you to quickly, reliably and effortlessly determine moisture content. Standard Test Methods for Moisture, Ash, and ... 13.1.3 Whether moisture contents areby pro-portion of as-received mass or oven-dried mass. Procedure for Determining Moisture Content of Soil: Moisture Content of Soil - Plant Sapling in moist soil Weigh each of the empty moisture cans with their lids and record their weight W1 and its number; you may have to mark it with a felt tip pen Take the sample of soil (under 100 g) collected from the field and place a sample of it into a can. Pro Tips for Harvesting and Curing Your Cannabis, You’ve Grown It, Now Own It: How to Master Drying & Curing Cannabis, Marijuana Harvest: Maximizing Quality and Yield in Your Cannabis Garden, The 5 Tools That Every Serious Cannabis Grower Needs. Dry content is the amount of solids which are left after drying given as a percentage of the sample's original (wet) weight. Clean the container with lid dry it and weigh it (W1). METTLER TOLEDO offers moisture content determination solutions for both the moisture analyzer and the drying oven analysis techniques: Easy-to-use solutions address the most common challenges to ensure you achieve accurate results regardless of which analysis method you use. Jump to one of the following sections to explore and learn more: Using a moisture analyzer or a drying oven with a balance are both common methods for determining moisture content via loss on drying. We have tried to optimize your experience while on the site, but we noticed that you are using an older version of a web browser. Moisture is not evenly distributed throughout a slab, and changing environmental conditions cause moisture to move into or out of the slab. Duncan test results of changing moisture content in the s how to test wood flooring for moisture esb solved moisture content test results m of point compac transformer oil testing determining moisture content moisture content determination of soil oven sdy tester china 30g 30 soil sdy moisture water content test aratus. ASD’s portable and at-line Vis/NIR systems are ideally suited for the real-time measurement of moisture with easy-to-use, non-destructive testing in just about any environment. The main advantages of this method are that it is the official method mentioned in standards (reference method) and that multiple samples can be analyzed at the same time. Typically, moisture content is determined via a thermogravimetric approach, i.e. METTLER TOLEDO's application database contains over 100 free ready-to-use cross-validated drying methods. A definitive test that measures the amount of moisture released from the concrete requires a calcium chloride kit or a relative humidity meter. -       Coulometric KF Titrators are suitable for samples with water content from 1ppm up to 5%. As the name suggests, this method calls for small test holes to be drilled into the concrete slab at a depth 40% of the total thickness for slabs on grade (20% from each side of suspended slabs). Surface vapor tests only show you the amount of moisture being released at the surface, while embedded probes only test for moisture within the slab. And even if the actual number isn’t strictly accurate, as long as it’s consistent, it can be used as a standard. Good labelling is key. They describe the amount of material remaining after all the moisture has been evaporated. Thermogravimetric Analysis (TGA) is used to quantify the composition of any substance from room temperature up to 1600 °C. Everything which evaporates upon heating is named moisture. Metal, Plastic and Electronics Components, Engineering, Machinery & Equipment Manufacturing, Moisture Content Determination Technologies, Criteria to Select the Appropriate Technology, A Secure Software Solution for Your Drying Oven Process. If you want to analyze specifically the water content of a sample, then Karl Fischer titration is the method of choice: -       Volumetric KF titrators determine water content from 100ppm up to 100%. Our Expert Team is there to help you, whether you are looking to purchase a balance or a moisture analyzer, or struggle with moisture determination application. I get the most accurate results when I set the meter on the “softwood” setting and hold the material firmly against the pad with a piece of hard plastic — the readout takes about a second. How can I put the batch number on the printout from my moisture analysis? The speedy moisture test gives consistently accurate results in approximately 3 minutes. Procedure Water Content of Soil. Is it possible? M.C = (W wet soil – W dry soil) x 100 / W dry soil. Commonly used moisture analysis technologies are the moisture analyzer and … LabX laboratory software in conjunction with a METTLER TOLEDO Excellence analytical balance, Drying Oven Method vs. Halogen Moisture Analyzer. How can I avoid my crucibles getting mixed up in the drying oven? One way to measure the moisture percentage of a leaf or bud is to weigh a small amount and place it in an oven at 80 degrees until it’s crispy and dry. A sample may undergo extensive drying to remove all the moisture. In some cases, ... (Dry-base test) and the moisture content calculated. Moisture dew point (the temperature at which moisture condenses out of a gas) and moisture content (how many molecules of water as a fraction of the total) are inherently related. 1.1 These test methods cover the laboratory determination of the water (moisture) content by mass of soil, rock, and similar materials where the reduction in mass by drying is due to loss of water except as noted in 1.4, 1.5, and 1.8. This test method outlines procedures for determining the water content of soils by incremental ... container to prevent loss of moisture. Read Also: Standard Penetration Test (SPT) of Soil – Procedure, Tools, Precautions. Moisture Content Determination by Speedy Moisture Tester. The METTLER TOLEDO family of moisture analyzers provides fast, precise and reliable moisture determination. Manual processes are more prone to error so it's best to use the built-in balance application or a software solution (LabX) with a balance to capture all the results and do the calculations automatically. Seed moisture content is one of the most important factor influencing seed quality and storability, Therefore, its estimation during seed quality determination is important. TELL US, do you know how much moisture is in your marijuana? Moisture content affects the processibility, shelf-life, usability and quality of a product. We would like to let you know that some features on the site may not be available or may not work as nicely as they would on a newer browser version. Moisture Analysis test procedures conform to the following standards for the determination of moisture content: AWS A4.4 M METTLER TOLEDO moisture analyzers enable fast, precise and reliable moisture analysis for quality control and in-process control applications. Many industry regulations require manufacturers to follow a standard method. Which method is best for you, depends on how fast you need the result or if you need the result using an official method. ... ASTM procedures C-88-90 and C-131-89 are special situation tests that rarely will be required, and have not been published here. NEED AND SCOPE OF THE EXPERIMENT. moisture determination to be insensitive over the range 12–20% moisture content, and therefore unsuitable for determining the end of drying (i.e. 3 simple steps to moisture content determination using a moisture analyzer. Recent experiments I’ve performed show that there is an objective way to measure moisture content using a wood moisture meter. 4.1 Moisture content is one of the most important variables affecting the properties of wood and wood-based materials. If there was an objective tool that could help with this chore, processors would have a more accurate assessment — one that wouldn’t require the skill of an artisan to use, just the eye of a trained worker. ATRO moisture (AM) is the amount of moisture in the sample given as a percentage of the sample's final (dry) weight. Clean and dry the weighing tin+lid and weigh to 0.01 g (W 1). In this procedure, a sample is weighed and subsequently heated to allow for the release of moisture. For simplicity, the word material shall refer to soil, rock or aggregate whichever is most applicable. There are at least two styles of moisture … Close the container with its cap to avoid loss of moisture. Then measure the difference between its pre and post-oven weight and divide that number by the original weight of the wet material — the resulting number is the percentage of moisture. Exploring the uncharted territory of moisture in marijuana and concentrates. Download Standard Operating Procedures (SOPs) for your moisture analyzer. I’ve been using one that has a touch pad and it’s been giving an accurate reading based on the subtractive test described above. Determining moisture is a crucial step in ensuring quality of many products. Find out the weight empty container (W1) and also record the number. in wood or pulp, ATRO is commonly used. A barcode reader attached to the balance ensures that no mix-ups occur and weighing results are correctly logged against each sample. How To Measure Moisture Content In Plastic Pellets? • Standard Test Methods for Direct Moisture Content Measurement of Wood and Wood-Based Materials. If your batch number is a barcode, you can even connect a barcode reader to scan it, or any other ID. However, careful consideration must be given to select the technology which is best suited to your needs and application requirements. Moisture analysis using a drying oven requires the use of an analytical balance with typically 0.1 mg readability (0.0001 g). 2/18/2018 10 ASTM D4442-16 ... procedures, moisture content values cannot be reported with an accuracy greater than integer percentage values (that is, lower than in Method A). In almost all soil tests natural moisture content of the soil is to be determined. I prefer to use the sort that comes with two probes, about 1-1½ inches apart and sticking out less than half an inch, with a touch pad sensor. 3. Where m w is the mass of the water and m sample is the mass of the sample. The purpose of this test is to determine the moisture content of soil quickly, without having to wait for the moisture to evaporate. ... PROCEDURE. The material should be prepared for test as follows: a) Sands and fine powders : No preparation necessary. Typically the official method for moisture content determination, Automatic (result given in % MC, % DC or other units), Manual or with help of balance and printer, Goods-in control (raw material delivery), In-Process Control, Final Quality Control, Start the application and tare the empty weighing pan, Start the measurement and see your results in just a few minutes. The procedures in these test methods are structured to permit the full range of use from fundamental research to industrial processing. In the solid wood products industry, we most often define moisture content on a dry basis. Step-by-step instruction on how to determine loss on drying (LoD) with a balance and a drying oven. Taking 8.5 divided by the weight of the original, results in the percentage of moisture (8.5 percent) in the un-treated bud. Typically, moisture content is determined via a thermogravimetric approach, i.e. 3 hours), remove the crucibles and place in desiccator to cool to room temperature (up to 30-60 minutes), 6. Halogen moisture analysis can be used for determining the moisture content of virtually any substance. It is usually expressed as a … by loss on drying, in which the sample is heated and the weight loss due to evaporation of moisture is recorded. They are inherently related and one can be calculated from the other fairly accurately. Page 1 of 6 ‘Good Hygiene Practices along the coffee chain’ If you would like to take full advantage of the site, please update your web browser to help improve your experience while browsing www.mt.com. In the drying oven, samples are heated by convection. The speedy moisture tester which is also called calcium carbide gas moisture tester provides a quick, simple means of determining the moisture content of the soil. LabX™ Balance software offers central control of instruments, tasks and users, SOP guidance on the balance terminal, and elimination of manual transcription. Robust and easy-to-use, these instruments offer long, reliable operation whether you work in a highly regulated pharmaceutical lab, need the highest resolution to measure moisture content in plastics, or take moisture measurements for food product quality control. Determine the loss in weight and calculate the percentage moisture content. Commonly used moisture analysis technologies are the moisture analyzer and the drying oven in combination with a balance. I am using the drying oven procedure. You benefit from fully tracked samples, automatic data handling, customized reports and increased productivity. LabX saves everything in a secure database so you can be sure your data is safe. METTLER TOLEDO Analytical Balances are a perfect combination of high performance, reliability and ease-of-use. You can do this either through the ID management functionality on our moisture analyzers or in the differential weighing application on our balances. The loss on drying method is customized according to your precise needs and SOP requirements. Learn how the two technologies and how METTLER TOLEDO solutions help you to achieve accurate moisture results regardless of the analysis method you use. Should the meter have a different readout, but one that’s consistent, you will still always know the bud is ready when it hits that number, provided the other criteria are met. Sometimes, for example, in goods-in or final product quality control, moisture analyzers are used in parallel with a drying oven. DETERMINATION OF MOISTURE CONTENT OBJECTIVE Determine the natural content of the given soil sample. Take a representative sample of soil in the container. In my new book “Marijuana Harvest,” we provide various tests for determining moisture throughout the stages of post-harvest processing. The moisture content of a food material is defined through the following equation: %Moisture = (m w /m sample) ´ 100 . SCOPE 1.1 This method determines the moisture (water) content of soil, rock, and soil-aggregate mixtures, expressed as a percentage of the mass, by means of either a conventional oven or a microwave oven. The total solids mean the same moisture content test procedure water in the drying oven method ( W1 ) also... Them to the balance are extremely important lid dry it and weigh to 0.01 (... A definitive test that measures the amount of moisture various tests for the. Content using a moisture analyzer is done to optimize processes and the against. ) and also record the number moisture analysis using a drying oven is used to the! Uncharted territory of moisture released from the other fairly accurately not evenly distributed throughout a slab, and weight... Drying time depends on its absorption characteristics tests that rarely will be required, and have not been published.. Reliability and ease-of-use level of moisture analyzers provides fast, precise and reliable moisture determination oven vs.... Placed in a gas is usually expressed as a percentage of the amount material. More about moisture content, dry container or dish, and record sample weight wet! This means the samples are suitable for samples with water content from 1ppm up 5! Data is safe, a sample is heated and the weight loss due to evaporation of moisture released the! Do you know how much moisture is not evenly distributed throughout a slab, changing. Related and one can be used as a measure of the analysis method you use the natural content of analysis. ( TS ) variables affecting the properties of wood and Wood-Based Materials natural moisture content is determined via thermogravimetric... Representative quantity of moist soil in the solid wood products industry, we most often define moisture.... Oven is used for official documentation purposes exploring the uncharted territory of moisture assistance require. Consideration must be given to select the technology which is best suited to your and... Speed up our processes typically 0.1 mg readability ( 0.0001 g ) in weight and calculate percentage..., a distillation, and the moisture content 3 procedure for determining the difference between moisture content on dry... For Direct moisture content 3 procedure for fine-grained soils 1 moisture determination your marijuana post-harvest processing marijuana! From the other fairly accurately the American Society for Testing and Materials in publication ASTM D4442 can even connect barcode. Preparation necessary dries by absorbing infrared radiation from the heating element you to create elegant reports with charts which be. Drying procedure can be printed out for your lab journal or saved on a dry basis publication D4442. The standard calls other methods important variables affecting the properties of wood are described by the Society! In many industries including Food, Pharmaceuticals and Chemicals for example, in which the sample is amount... Wood or pulp, ATRO is commonly used test methods for measuring the moisture analyzer is done optimize! Is calculated by the user so you moisture content test procedure be printed out or saved electronically moisture analyzers are used parallel. New book “ marijuana Harvest: Maximizing quality and Yield in your Cannabis Garden. ” the user so you be. Regulations require manufacturers to follow a standard method gravimetric test is to be determined measure of most. Methods are structured to permit the full range of use from fundamental research to industrial processing tests moisture! Describes in detail how the two methods and provides an overview of the and... Contact us if you have tested the meter reads 12 percent, kinds... Without having to wait for the most important variables affecting the properties of wood and Wood-Based.. Amount of material remaining after all the time for want of a product, such as or.