In many fields such as scientific research, education and medical treatment, specimen bag is an important tool for preserving and transporting specimens, and its correct use is crucial to ensure the integrity and research value of specimens. The following details the use of specimen bags from a number of key aspects.

1. Selection of specimen bag

Material compatibility: Select the appropriate material for the specimen bag according to the specimen type. For biological specimens, sensitivity to humidity, temperature and microorganisms should be considered. For example, to preserve plant specimens, paper or non-woven specimen bags with certain breathability can be used to keep specimens dry and avoid excessive moisture resulting in mildew; For animal tissue specimens, well-sealed plastic specimen bags are often used to prevent liquid seepage and external contamination.

Size: Ensure that the specimen bag size can fully accommodate the specimen and has a certain margin. Too large a specimen bag will cause the specimen to shake in the bag, which may cause damage; Too small can not be properly placed specimens, affecting the preservation effect. For large bone specimens or whole plant specimens, a specially sized specimen bag is required.

2. Specimen loading operation

Cleaning and protection: Before loading the specimen, ensure that the specimen bag is clean and pollution-free. For infectious or easily deteriorated specimens, operators should wear protective equipment such as gloves and masks to prevent cross-contamination.

Correct placement: Carefully put the specimen into the specimen bag, for fragile specimens, such as insect specimens, glass slice specimens, etc., to add buffer materials in the bag, such as cotton, foam, etc., to avoid damage caused by collisions during the movement of specimens. For liquid specimens, ensure that they are well sealed, placed upright in the specimen bag, and marked with warning signs such as "Liquid specimens, handle with care" on the outside of the bag.

3. Special specimen treatment

Fixation and preservative: For some biological specimens that need to be preserved for a long time, such as anatomical specimens, fixation and preservative treatment are required before loading into the specimen bag. The commonly used fixative is formalin, etc. The treated specimen is dried with absorbent paper and then put into the specimen bag. At the same time, an appropriate amount of desiccant can be placed in the bag to maintain a dry environment in the bag.

Identification and record: Each specimen bag should be clearly marked with the name of the specimen, collection time, place, collection person and specimen number and other key information. Detailed records help in the subsequent identification, research and management of specimens to avoid confusion and misuse.

Storage and transportation

Storage environment: The storage environment of the specimen bag should be kept dry and cool, avoid direct sunlight and high temperature. For temperature-sensitive specimens, such as some virus specimens, it is necessary to store in a refrigerated or frozen environment at a specific temperature to ensure the activity and quality of the specimen.

Transportation safety: When transporting the specimen bag, it is necessary to choose the appropriate packaging method to ensure that the specimen bag is not squeezed, bumped and jolted during transportation. For long-distance transport or international transport, it is also necessary to comply with the relevant transport regulations and biosafety regulations and complete the necessary procedures.

Maintenance and management of specimen bags

Regular inspection: Check the integrity of the specimen bag regularly to see if there is damage, leakage, etc. For problematic specimen bags, they should be replaced in time to ensure the safety of specimens.

Renewal and replacement: With the passage of time, the specimen bag may be aging and damaged, and the old specimen bag should be updated and replaced in time to ensure the long-term preservation effect of the specimen.

The correct use of specimen bags is the basis for ensuring the quality of specimens and the smooth development of research work. Through reasonable selection, standardized operation, proper handling, safe transportation and effective management, the role of specimen bags in specimen preservation and application can be maximized.