IS 7872 Deep/Chest freezer Test Packages
IS 7872 SPECIFICATION FOR DEEP FREEZERS
Welcome to our comprehensive guide on IS 7872 Test Packages. Our test packages are designed to meet the highest standards of accuracy and reliability, ensuring that your testing processes are both efficient and effective.
Product Overview
IS 7872 Test Packages are meticulously crafted in the form of right parallelepipeds, adhering to strict specifications for dimensions and mass. These packages are essential for various testing applications, providing consistent and reliable results.
Dimensions and Mass Specifications
Our test packages come in specific sizes and weights as outlined in Table 2 below:
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Table 2 Dimensions and Mass of Test Packages
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Sl No
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Dimensions(mm)
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Mass（g)
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i)
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50 x 100 x 100
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500
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ii)
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50 x 100 x 200
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1000
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The following packages may be used as fillers to complete the cabinet loading
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i)
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25 x 100 x 200
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500
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ii)
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37.5 x 100 x 200
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750
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Tolerances for Freezing load Test Packages
To maintain precision, our test packages adhere to the following tolerances:
*Linear Dimensions:
±2 mm for dimensions from 25 mm to 50 mm
±4 mm for dimensions from 100 mm to 200 mm
*Mass: ±2%
Due to frequent use and loading pressure, test packages may change in dimensions and weight. Therefore, they must be checked annually for conformity with the following life-time tolerances:
*Loss of Mass: Not more than ‒5%
*Wrapper Condition: No visible holes
*Change in Linear Dimensions:
*±4 mm for dimensions from 25 mm to 50 mm
±8 mm for dimensions from 100 mm to 200 mm Composition of Each Test Package
Each test package consists of filling material and a wrapper. The filling material per 1,000 g includes:
*230 g of oxyethyl methyl cellulose
*764.2 g of water
*5.0 g of sodium chloride
*0.8 g of para-chloromethane-cresol
The freezing point of this material is -1°C, with an enthalpy value of 285 kJ/kg corresponding to a temperature of (-1 ±0.5)°C. To compensate for evaporation during preparation, approximately 4% additional water should be added.
Conclusion
Our IS 7872 Test Packages are designed with precision and durability in mind, ensuring that they meet stringent industry standards. By adhering to these specifications, we provide reliable tools that contribute significantly to your testing processes.
For more information or to place an order, please contact us today!
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