Absorbent paper inside the sample transport bag Category Application

The absorbent paper in the sample transport bag is mainly used for absorbing liquids accidentally spilled from biological samples, preventing leakage and contamination.

During the processes of virus preservation, sample collection, and transportation, different protective

liquid media are usually required to maintain the integrity and stability of the samples, and absorbent

paper plays an important role in this process[^2^]. Its classification is mainly based on material

composition, absorption capacity, application scenarios, etc., while its applications include fields such as

laboratory use, maintenance of biosafety, etc.

Classification of Absorbent Paper:

1. By Material: Laboratory-specific absorbent paper is usually made from highly absorbent cellulose paper with a polyethylene backing to prevent penetration. This structure enables the paper to not only quickly absorb liquids but also prevent liquid penetration and contamination of the test bench[^4^].
2. By Absorption Capacity: Some absorbent papers are designed specifically for absorbing certain liquids such as disinfectants or those with high volatility and corrosiveness, maintaining the safety and cleanliness of the experimental environment.
3. By Application Scenario: According to different usage needs, absorbent papers come in various sizes and thicknesses, serving laboratory cleaning or as a moist base layer during seed germination tests.
4. By Functionality: There are absorbent papers specially designed for adsorbing radioactive or valuable chemicals, which can prevent environmental pollution and recover valuable substances[^4^].
5. By Manufacturing Process: The market also distinguishes between regular absorbent paper and enhanced absorbent paper, the latter may contain additional chemical components to enhance its water absorption performance or be optimized for specific types of liquids.

Applications of Absorbent Paper:

1. Laboratory Uses:

• In laboratories, absorbent paper can quickly handle small liquid spills, preventing benches from getting damp or contaminated.
• In biosafety operations, it can be used to deal with accidentally spilled biological samples, reducing the risk of aerosol splashes[^3^].
• It can serve as experimental recording paper, using its smooth surface to record data.
• It is suitable for collecting precipitates or absorbing supernatants as part of an experiment.
• In chemical experiments, it is used as a precautionary measure, laid around the work area to prevent the spread of chemical liquids.

Maintaining Biosafety:

• In handling spill incidents caused by improper packaging of samples, absorbent paper can promptly absorb leaked biological samples, avoiding exposure of personnel to pathogens and other bacteria[^3^].
• During the COVID-19 pandemic, absorbent paper was widely used at sampling points for throat swabs and nasal swabs, as an aid to absorb excess liquid during the collection process.
• In the transportation of biological samples, super absorbent bags or other absorbent materials can be part of the auxiliary container to protect the main container’s samples from leaks[^5^].

1. Household and Personal Uses:

• At home, it can serve as a tablecloth to absorb moisture or liquids that have been spilled.
• Used on children’s desks, especially during painting or writing activities, as desktop protection, absorbing excess water.
• In home gardens, it is used for seed germination tests to maintain soil moisture.

1. Environmental Protection:

• In chemical spill incidents, absorbent paper can be used extensively to control and clean up spilled chemicals, reducing environmental damage.
• By recycling and properly disposing of used absorbent paper, environmental pollution can be minimized, meeting environmental protection requirements.

In summary, the absorbent paper inside sample transport bags plays a crucial role in laboratory

management and biosafety, and has a wide range of other applications. Choosing the right absorbent

paper not only helps improve experimental efficiency and accuracy but is also crucial for ensuring the

safety of individuals and the environment.