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. I am using the drying oven procedure. (See Note 2.) 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. Which method is best for you, depends on how fast you need the result or if you need the result using an official method. 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%. 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. Clean the container with lid dry it and weigh it (W1). In general, all kinds of samples are suitable for both the drying oven and the halogen moisture analyzer. national food regulations). Take a representative sample of soil in the container. How To Measure Moisture Content In Plastic Pellets? Use of a barcode reader is fully supported by the differential weighing application on the balance and by LabX. Both tests are often required to fully determine the level of moisture present in a concrete floor. DETERMINATION OF MOISTURE CONTENT OBJECTIVE Determine the natural content of the given soil sample. A hundred grams of dried, un-manicured buds were weighed out, then placed in a low-temperature oven until they were crispy. Results can be printed out for your lab journal or saved on a USB stick to be saved electronically. However, careful consideration must be given to select the technology which is best suited to your needs and application requirements. 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). Tests can be manually conducted (weigh, oven dry, weigh) or automated (integrated weight and heating unit) with systems called Moisture Determination Balances. 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. How are samples heated in the drying oven and in the moisture analyzer? METTLER TOLEDO moisture analyzers enable fast, precise and reliable moisture analysis for quality control and in-process control applications. 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. And even if the actual number isn’t strictly accurate, as long as it’s consistent, it can be used as a standard. Near-infrared (NIR) spectroscopy can detect the water content and activity in a wide range of materials, and over a large range of concentrations. The sample's temperature and drying time depends on its absorption characteristics. 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. 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. Which method should I use for moisture content determination? There are three commonly used test methods for performing moisture content tests of normal-weight and lightweight aggregates. Add sample and record sample weight (wet weight), 5. The LabX report generator enables you to create elegant reports with charts which can be printed out or saved electronically. Sometimes, for example, in goods-in or final product quality control, moisture analyzers are used in parallel with a drying oven. METTLER TOLEDO Analytical Balances are a perfect combination of high performance, reliability and ease-of-use. 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. The procedures in these test methods are structured to permit the full range of use from fundamental research to industrial processing. 3 hours), remove the crucibles and place in desiccator to cool to room temperature (up to 30-60 minutes), 6. Contact our Expert Team and receive assistance you require. Typically, moisture content is determined via a thermogravimetric approach, i.e. Moisture analysis using a drying oven requires the use of an analytical balance with typically 0.1 mg readability (0.0001 g). SOPs for temperature calibration, periodic sensitivity testing of the weighing unit and an overall moisture analyzer performance test. Different industries use different units e.g. c) Aggregates: No preparation necessary. I have many different samples (liquid, pasty, solid, powder). Determine the mass of a clean, dry container or dish, and record. 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. If you have tested the meter against these two subjective but accurate tests and the meter reads 12 percent, all is well. LabX saves everything in a secure database so you can be sure your data is safe. 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. In the solid wood products industry, we most often define moisture content on a dry basis. This means the samples are at the same temperature as the drying oven. 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. The moisture content of a food material is defined through the following equation: %Moisture = (m w /m sample) ´ 100 . ... ASTM procedures C-88-90 and C-131-89 are special situation tests that rarely will be required, and have not been published here. Close the container with its cap to avoid loss of moisture. Excepted from “Marijuana Harvest: Maximizing Quality and Yield in Your Cannabis Garden.”. Thermogravimetric Analysis (TGA) is used to quantify the composition of any substance from room temperature up to 1600 °C. Is it possible? The speedy moisture test gives consistently accurate results in approximately 3 minutes. In the drying oven, samples are heated by convection. 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. Determine the loss in weight and calculate the percentage moisture content. -       Coulometric KF Titrators are suitable for samples with water content from 1ppm up to 5%. Read Also: Standard Penetration Test (SPT) of Soil – Procedure, Tools, Precautions. This requires developing a drying method for the moisture analyzer and cross-validating it against the drying oven through a series of analyses. 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. There are at least two styles of moisture … 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. ... PROCEDURE. 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. Commonly used moisture analysis technologies are the moisture analyzer and … • Standard Test Methods for Direct Moisture Content Measurement of Wood and Wood-Based Materials. Soil Moisture Content 3 PROCEDURE For fine-grained soils 1. 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. Following this, the sample is cooled in the desiccator before reweighing. Moisture is not evenly distributed throughout a slab, and changing environmental conditions cause moisture to move into or out of the slab. Is there a difference between dry content (DC) and total solids (TS)? It's not only much faster but it's error-free too. Test Procedure for DETERMINING MOISTURE CONTENT IN SOIL MATERIALS TxDOT Designation: Tex-103-E Effective Date: August 1999 1. moisture determination to be insensitive over the range 12–20% moisture content, and therefore unsuitable for determining the end of drying (i.e. Furthermore, the maximum permissible moisture content in certain products may be governed by legislation (e.g. 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. Various methods for measuring the moisture content of wood are described by the American Society for Testing and Materials in publication ASTM D4442. A sample may undergo extensive drying to remove all the moisture. b) Clays, soils and other coarse materials: Use steel ball speedy moisture test. LabX laboratory software in conjunction with a METTLER TOLEDO Excellence analytical balance, Drying Oven Method vs. Halogen Moisture Analyzer. by loss on drying, in which the sample is heated and the weight loss due to evaporation of moisture is recorded. Select a representative quantity of moist soil in the amount specified by a test. 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). In my new book “Marijuana Harvest,” we provide various tests for determining moisture throughout the stages of post-harvest processing. After a defined time (e.g. 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. The material should be prepared for test as follows: a) Sands and fine powders : No preparation necessary. Moisture content is calculated by the difference in wet and dry weight. Each step requires verification by the user so you can be sure your SOP is followed precisely. Fast analysis with the moisture analyzer is done to optimize processes and the drying oven is used for official documentation purposes. For simplicity, the word material shall refer to soil, rock or aggregate whichever is most applicable. Literature: White    Papers, Guides, Brochures. Clean and dry the weighing tin+lid and weigh to 0.01 g (W 1). Fortunately, experience and some simple tests can help determine if the moisture content in a slab is within an acceptable range for … 1. Accurate moisture content determination therefore plays a key role in ensuring quality in many industries including Food, Pharmaceuticals and Chemicals. How can I avoid errors when I'm recording results and doing calculations? 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. Contact us if you don't find what you need. The moisture content is determined by weighing the sample before and after drying and determining the difference. Back-weigh the crucibles on the balance, 7. One half of the dynamic duo behind Swami Select breaks down all the tools and gear... Why sustainable, sungrown cannabis just tastes better. LabX™ Balance software offers central control of instruments, tasks and users, SOP guidance on the balance terminal, and elimination of manual transcription. The dry content remaining may be termed the total solids (TS). Recent experiments I’ve performed show that there is an objective way to measure moisture content using a wood moisture meter. ASTM 2170, “Standard Test Method for Determining Relative Humidity in Concrete Floor Slabs Using in situ Probes,” takes a different approach to measuring moisture. 3 simple steps to moisture content determination using a moisture analyzer. Seed moisture content is one of the most important factor influencing seed quality and storability, Therefore, its estimation during seed quality determination is important. Page 1 of 6 ‘Good Hygiene Practices along the coffee chain’ 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. A definitive test that measures the amount of moisture released from the concrete requires a calcium chloride kit or a relative humidity meter. Dry content is the amount of solids which are left after drying given as a percentage of the sample's original (wet) weight. 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. Procedure for water content of soil test given below, 1. Ans: The formula for the determination of moisture content is. How damp is your dank? 2. This is a common misconception. 3. Good labelling is key. https://civilblog.org/2013/05/14/moisture-content-test-of-soil-is-2720-part-2-1973 3. Using barcode labels uniquely identifies each sample. 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. Water may be a part of this but there may be other substances which also evaporate, such as alcohol or solvents. Forget strain names, this Oregon company crafts hemp seeds with one cannabinoid in mind. Step-by-step instruction on how to determine loss on drying (LoD) with a balance and a drying oven. 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. Names, this Oregon company crafts hemp seeds with one cannabinoid in mind sample before and drying... Determine moisture content objective determine the natural content of the given soil sample total... Structured to permit the full range of use from fundamental research to processing! Given soil sample cross-validating it against the drying oven method reader is fully supported by the empty. Analyzer method alcohol or solvents and have not been published here liquid, pasty, solid, )! 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