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Questions and Answers
What is the primary method of grain moisture determination?
What is the primary method of grain moisture determination?
What does the PAES 203 standard specify?
What does the PAES 203 standard specify?
What is coning and quartering used for in grain testing?
What is coning and quartering used for in grain testing?
Which ISO standard is related to the sampling of milled products?
Which ISO standard is related to the sampling of milled products?
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What does ISO 6540:1980 relate to?
What does ISO 6540:1980 relate to?
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Who initiated the formulation of the standard PAES 203:2000?
Who initiated the formulation of the standard PAES 203:2000?
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What procedures were specified in the standard PAES 203:2000?
What procedures were specified in the standard PAES 203:2000?
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Which committee reviewed the formulated standard?
Which committee reviewed the formulated standard?
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Which organization organized the public hearing for this standard?
Which organization organized the public hearing for this standard?
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In accordance with which set of rules was the standard PAES 203:2000 technically drafted?
In accordance with which set of rules was the standard PAES 203:2000 technically drafted?
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Study Notes
Formulation of PAES 203: Moisture Content Determination for Rice and Corn
- Initiated by Agricultural Machinery Testing and Evaluation Center (AMTEC) through the project "Standardization of Postharvest Machinery Testing and Evaluation" funded by the Bureau of Postharvest Research and Extension (BPRE) of the Department of Agriculture (DA)
- Reviewed by the Study Team for the Formulation of Standards for Grain Dryer and the Technical Committee on Postharvest Machinery
- Circulated to various private and government agencies/organizations for comments and reactions
Key Provisions of PAES 203
- Calibration procedures to be followed
- Methods of sample size reduction
- Grain sampling procedures
- Procedures on moisture content determination during the test
International References
- ISO/DIS 11520-1 Agricultural Grain Dryers – Determination of Drying Performance
- ISO 711:1985 Cereals and Cereal Products – Determination of Moisture Content (Basic Reference Method)
- ISO 712:1985 Cereals and Cereal Products – Determination of Moisture Content (Routine Reference Method)
- ISO 950:1979 Cereals – Sampling (as grain)
- ISO 2170:1980 Cereals and Pulses – Sampling of Milled Products
- ISO 6540:1980 Maize – Determination of Moisture Content (Basic Reference Method)
- Part 16 and 17 of the regional Network for Agricultural Machinery Test Codes and Procedures for Continuous Flow and Batch Rice Dryers
- NFA Standard Calibration Procedure – Grains Meter Calibration for Standard Laboratory Procedure
Scope and Purpose of PAES 203
- Specifies the methods for determining the moisture content of rice and corn for mechanical grain dryer testing
- Used for calibration of the moisture meter, grain sampling procedures, and determination of moisture content of grains during tests
Definitions
- Moisture content: the amount of moisture in the grain expressed as a percentage of the total weight of the sample, wet basis
- Calculated as: Moisture Content (w.%) = (Mo - M1) / Mo x 100
- Primary method: method of grain moisture determination based on actual extraction of water either by convection heating (oven method) or distillation
- Secondary method: method of grain moisture determination based on some characteristics of the grain sample such as electrical resistance and capacitance which are related to moisture content and must be periodically calibrated against an official primary method
Coning and Quartering Method
- Used to reduce samples to a manageable level while still possessing the same characteristic elements present in the whole population
- Performed by thoroughly mixing all specific samples, heaping the mixture, and dividing it into four quarters
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Description
Learn about the Philippine Agricultural Engineering Standard PAES 203:2000 which covers the determination of moisture content for rice and corn. This standard was developed by the Agricultural Machinery Testing and Evaluation Center (AMTEC) with funding from the Bureau of Postharvest Research and Extension (BPRE) of the Department of Agriculture (DA).
