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Yield is the weight of clean wool, after the removal of impurities, expressed as a percentage of the greasy wool weight. These impurities may be natural, such as grease and suint, or acquired, such as seeds and burrs along with sand, soil or other mineral matter. In addition, wool naturally absorbs moisture and this can vary from day to day depending on climatic conditions. Because it is used to estimate the quantity of usable wool fibre in a lot it is a significant factor in wool trading, although it does not, as such, affect the processing efficiency of the wool.
The skilled wool buyer can attempt to appraise these impurities and arrive at a yield which is used as the basis of establishing a price for the material. However, with the need for independence, and consistency, nearly all wool is traded on a tested basis.
The testing process involves a washing and drying process to remove most impurities and moisture. After the test sub-samples have been weighed they are scoured in hot water and detergent where wool grease, suint (dried sweat), dust and dirt are removed. The wool is rinsed to remove detergent and the minimize fibre loss. The sub-sample is then dried at 105°C until the sample is dry. This constant dry weight is recorded for use in later calculations. After scouring there will still be residual impurities remaining in the wool and these must be measured by more sophisticated methods.
Wiki User
∙ 13y ago
Wiki User
∙ 9y agoA yield test is when a material is stretched, pulled, or pushed to its deformity point. The yield point is reached when the material will no longer return to its original structure.
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What is the positive color of silver nitrate?
When testing silver nitrate, a whitish color will yield positive results. If the test is negative, the color will turn clear and it will remain transparent.
What are battery testers?
A battery analyzer is an electronic gadget proposed for testing the condition of an electric battery, going from a straightforward gadget for testing the charge really display in the cells and/or its voltage yield, to a more far reaching testing of the battery's condition, in particular its ability for gathering charge and any conceivable defects influencing the battery's execution and security.
Radon and radon decay product measurements permitted to be used for real estate testing that yield a single average reading over a period of time are called?
Integrative measurement
How is percent yield caculated?
Percent yield = (actual yield/expected yield) x 100
How do you calculate percentage yield?
# Determine the limiting reagent; # Calculate the expected yield if the reaction goes to 100% completion. # Divide the actual yield by the expected yield and multiply by 100. The result is percentage yield.
Can meloxicam yield a positive result on ANA testing?
can taking meloxicam yield a positive result on antinuclear antibody (ANA) test
Different ways you can think of that a grower might use to increase crop yield?
Soil testing, Crop Genetics, Seed spacing, Irrigation
What is the purpose of doing soil testing before planting?
Many crops require a certain percentage of nutrients in the soil to get the highest yield, by testing the soil and knowing what your crops require you can adjust the nutrients and get the best crop yields.
How can testing soil help to increase the productivity of farmland?
Testing the soil - will reveal any deficiency in minerals etc. This gives the farmer the chance to add chemicals to counterbalance the shortfall, before seeding the area. This will increase the yield of the crop.
What is the positive color of silver nitrate?
When testing silver nitrate, a whitish color will yield positive results. If the test is negative, the color will turn clear and it will remain transparent.
Does polystyrene exhibit yielding?
No, pure Polystyrene (PS) is quite brittle; hence, General Purpose Polystyrene (GPPS) does not yield. It breaks right after passing over its limit. However, the weakness of polystyrene, which is brittleness, is overcome when it is made into High Impact Polystyrene (HIPS). Having a higher breaking strain after polymerization, it is able to yield before breaking. Thus, from this tensile testing experiment, GPPS does not have yield strength, while HIPS has yield strength of 26.175N/mm2.
What are battery testers?
A battery analyzer is an electronic gadget proposed for testing the condition of an electric battery, going from a straightforward gadget for testing the charge really display in the cells and/or its voltage yield, to a more far reaching testing of the battery's condition, in particular its ability for gathering charge and any conceivable defects influencing the battery's execution and security.
Radon and radon decay product measurements permitted to be used for real estate testing that yield a single average reading over a period of time are called?
Integrative measurement
HOW TO calculate percentage yield?
actual yield multiply by 100 = % yield theoretical yield
What is the percent yield of 122 grams of product?
If this is the actual yield, real amount produced, then you need the theoretical yield to find the percent yield. % yield = (actual yield / theoretical yield) x 100
How is percent yield caculated?
Percent yield = (actual yield/expected yield) x 100
How do you calculate percentage yield?
# Determine the limiting reagent; # Calculate the expected yield if the reaction goes to 100% completion. # Divide the actual yield by the expected yield and multiply by 100. The result is percentage yield.
