What Is The Use Of Desiccator?

Are you curious to know what is the use of desiccator? You have come to the right place as I am going to tell you everything about the use of desiccator in a very simple explanation. Without further discussion let’s begin to know what is the use of desiccator?

In the realm of laboratory work, precision and accuracy are paramount. Moisture-sensitive materials and experiments require a controlled environment to prevent undesired reactions or alterations. This is where a desiccator, a seemingly simple yet crucial piece of laboratory equipment, comes into play. In this blog post, we will explore the use of a desiccator, its design, and its significance in preserving the integrity of sensitive substances and experiments.

What Is The Use Of Desiccator?

A desiccator is a sealed container designed to maintain a low-humidity environment, protecting moisture-sensitive materials and samples from the deleterious effects of moisture. It typically consists of a durable, airtight container made of glass or plastic with a removable lid. The key feature of a desiccator is the presence of a desiccant, a substance that absorbs and traps moisture, usually placed at the bottom.

Components And Design:

  1. Desiccant: The most critical component of a desiccator is the desiccant, a substance that absorbs moisture from the air within the sealed environment. Common desiccants include silica gel, calcium chloride, and activated charcoal.
  2. Desiccator Plate: A perforated or mesh plate is often placed above the desiccant, providing a platform for the samples or materials to be stored. This plate ensures that the samples are not in direct contact with the desiccant.
  3. Lid and Seal: The lid of the desiccator is designed to create an airtight seal when closed, preventing the entry of moisture from the surrounding environment. It may have a handle for easy access and manipulation.
  4. Vacuum Outlet: Some advanced desiccators come equipped with a vacuum outlet, allowing for the creation of a vacuum within the desiccator to further reduce humidity.

Uses Of A Desiccator:

  1. Preservation of Hygroscopic Materials: Many chemicals and substances are hygroscopic, meaning they readily absorb moisture from the air. A desiccator provides a controlled environment to store these materials without compromising their integrity.
  2. Moisture-Sensitive Experiments: Certain laboratory experiments and procedures are highly sensitive to moisture. A desiccator ensures a dry environment, preventing unwanted reactions or changes in the experimental setup.
  3. Storage of Electronic Components: Delicate electronic components, especially those used in precision instruments, are susceptible to damage from moisture. Desiccators provide a safe storage space for these components.
  4. Seed Storage: In agricultural research, desiccators are used to store seeds. Maintaining a low-humidity environment helps preserve the viability of seeds for extended periods.
  5. Drying Samples: Researchers often use desiccators to dry or dehydrate samples. Placing moist samples in a desiccator allows for controlled drying without the risk of contamination from the surrounding environment.

Best Practices For Using A Desiccator:

  1. Proper Sealing: Ensure that the desiccator is tightly sealed when not in use to prevent the entry of moisture. Check the integrity of the seal regularly.
  2. Desiccant Maintenance: Monitor the condition of the desiccant and replace it when it becomes saturated. This ensures optimal moisture-absorbing capacity.
  3. Avoiding Rapid Temperature Changes: Rapid temperature changes can lead to condensation inside the desiccator. Gradual temperature adjustments and allowing the desiccator to equilibrate before opening can help prevent this.
  4. Careful Handling: When handling samples or materials within the desiccator, minimize the time the lid is open to limit exposure to ambient air.


The desiccator, though seemingly unassuming, plays a critical role in maintaining the precision and reliability of laboratory work. By creating a controlled, low-humidity environment, it serves as a guardian for moisture-sensitive materials and experiments. As laboratories continue to advance in their pursuit of scientific knowledge, the humble desiccator remains an indispensable tool for preserving the integrity of delicate substances and ensuring the accuracy of experimental results.


What Is The Use Of Desiccator In Pharmacy?

This laboratory device can absorb moisture in humid conditions and keep the items dry and dust-free. They also prevent any hygroscopic materials from reacting with moisture that is caused by humid conditions. It’s not used to dry material, but to maintain a dry atmosphere and keep the material dry.

What Is The Use Of Desiccator Powder?

Reducing of the humidity in the air using a desiccating adsorption wheel. For powder cooling and transport, to prevent that powder picks-up moisture from the cold air. Can be used for main drying air and fluid bed drying air on very sticky products or to increase capacity.

Why Is Desiccator Used For Cooling?

Cooling is required because a heated material will have a lighter weight than the material at room temperature. This part requires a dessicator to prevent moisture from the air to be absorbed by the precipitate and also to remove the trace amount of moisture in the sample.

What Is The Use Of Plain Desiccator?

Desiccators are enclosures containing desiccants for preserving moisture sensitive products. These desiccators are moulded-in from high quality plastics which is light and easy to handle. Silicone O-ring assures tight seal down to 0°C without using grease.

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