A5TM D 2974-87 Standard Test Methods for Moisture, Ash, and Organic If no reference value exists, try finding a method that dries your sample in a repeatable and fast manner. Free moisture method with comparison to reference method. ); (2) to compare the effects of dryingtemperature, time, and sample treatment in an air oven on the moisture content of pearl milletusing Determine lipid content gravimetrically by measuring triplicate aliquots of the chloroform layer into tared containers, evaporate the solvent and weigh. Avoid excessive drying. Moisture, These test methods cover the determination of the moisture content (MC) of solid wood, veneer, and other wood-base mater, EMBANKMENT AND BASE IN-PLACE DENSITY The accuracy of results can be affected by temperature, relative humidity, amount of sample, particle size, and variation of temperature in the oven. Determination of moisture content (AOAC, 2000) Method 1. endstream endobj startxref Note that the full text search yields only matches that include the exact word sequence of your query. >> Sometimes, for example, in goods-in or final product quality control, moisture analyzers are used in parallel with a drying oven. Routine testing of the heating and weighing unit are therefore necessary to ensure reliable determination of the moisture content and correct functioning of the instrument. The remaining dry mass is weighed to determine the loss in mass. %%EOF All rights reserved. Determination of moisture content (AOAC, 2000) Method 1. The method is accurate but time consuming. stream Vitamins fat Cover, cool in desiccator, and weigh. %PDF-1.3 The gravity atmospheric oven was unsuitable for use in accurate moisture analysis because of wide temperature differentials within the oven cavity. Evaluation of Air Oven Moisture Content Determination Procedures for These are the observations that contain the initial and the final mass of test samples. jB`FJxjcB qv4;>[%5YR0IM@w}z@rBVcm] +JH"yuMOol/T/2k0e^O!r;U:,iS4-U.l#T0p+ar6=8XKBk4tEV[NMPsW7aga $'X%rmOLN`&}C|jh$pOF!.+_t!` \,zLzLH11d,(Lir=IcWuN( _,-aYS1.ma9'Haflm2DeG d05a`N^]FPj/ How can I avoid errors when I'm recording results and doing calculations? Read our application note to learn more. Determination of Moisture Content_A Complete Procedure (AOAC - YouTube Method Wizard Step 2 - Temperature Assistant, Connectivity Software solutions Data flow from one instrument to another, Productivity (released time from the team) Uptime Optimize processes, Reduction in operating costs Total cost of ownership Maintenance cost reduction, Shift to the next level measurement process (from manual to automated, or to on-line measurement; automation), Sustainable design (futureproof modular design long lasting), Time reduction quick adjustment and scalability of methods, User skills and knowledge (theory of applications, technologies, methods, tips and tricks), Metal, Plastic and Electronics Components, Download the Reference Paper on Methods for Halogen Moisture Analyzers, WhitePaper Drying oven versus moisture analyzer, Method Development Support & Application Search, Download the Drying Oven vs. Halogen Moisture Analyzer Guide. Determination of Oven Moisture in Tobacco | Journal of AOAC In the drying oven, samples are heated by convection. Connect the soxhlet apparatus and turn on the water to cool them and then switch on the heating mantle. CALIBRATON OF SPEEDY MOISTURE METER. 5 0 obj Loss on Drying. Weigh about 3 g of sample to the dish. METTLER TOLEDO is an expert in moisture analysis and offers a wide range of reliable and easy to use moisture analyzers to suit the needs of quality control, production and in-process control of many industries, such as pharma, plastics and the food industry.
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