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Bags, or sample bags, play an important role in the sampling of bulk materials. They serve as containers to safely store, transport, and analyze collected samples. Here are some reasons why sample bags are needed:

  1. Safety and Hygiene: Bags provide a safe and hygienic way to store and transport samples. They protect the material from contamination by external sources and prevent the material from being lost or altered over time.
  2. Integrity of the Sample: Bags help preserve the integrity of the sample. They prevent moisture, oxygen, light, or other factors from affecting the sample, which is especially important for sensitive or perishable materials.
  3. Practicality and Efficiency: Bags are easy to handle and store. They are lightweight, space-saving, and can be labeled to include information about the sample. They are also cost-effective and available in many different sizes and materials to meet the specific requirements of the sample.
  4. Compatibility with Analytical Instruments: Many laboratory analytical instruments are designed to be compatible with standardized sample bags. This can facilitate the handling of samples during analysis and reduce errors.

The type of bag used depends on the specific requirements of the sampling and analysis. For example, bags made of plastic, paper, fabric, or special foil-coated materials can be used. Some bags may also have special features, such as resistance to certain chemicals, the ability to form a vacuum seal, or the ability to be sterilized at certain temperatures.