Dryers; lyophilisation apparatus, freeze drying units and spray dryers, not used for domestic purposes

HS v2022 Code: 841933

About dryers; lyophilisation apparatus, freeze drying units and spray dryers, not used for domestic purposes

HS code 841933 covers a range of industrial drying equipment, including lyophilisation (freeze-drying) apparatus, freeze-drying units, and spray dryers. These specialized machines play a crucial role in various industries, from food processing and pharmaceuticals to chemical manufacturing and material science. The efficient drying of heat-sensitive or delicate materials is essential for maintaining product quality, extending shelf life, and enabling complex production processes.

Production process

The key production techniques for HS code 841933 items involve the careful design and engineering of drying systems. Lyophilisation apparatus utilizes a process of sublimation, where frozen materials are dried under vacuum to preserve their structure and properties. Freeze-drying units employ similar principles, while spray dryers atomize liquid feedstock into fine droplets and rapidly dry them using hot air or gas. These techniques require precise control over temperature, pressure, and airflow to ensure consistent and high-quality drying results.

Production inputs

The main inputs for the production of HS code 841933 items include specialized components such as compressors, heat exchangers, control systems, and high-performance materials like stainless steel. Manufacturers also rely on advanced engineering and design capabilities to develop efficient and reliable drying solutions. Depending on the specific application, the input materials being dried may also be a significant factor, ranging from food and pharmaceutical products to industrial chemicals and advanced materials.

Production outputs

The primary outputs of HS code 841933 are the various types of industrial drying equipment, including lyophilisation apparatus, freeze-drying units, and spray dryers. These products are then consumed by a wide range of industries, such as 841932 Food, beverage and tobacco processing machinery, 300 Pharmaceutical products, 390 Plastics and articles thereof, and 280 Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes. The efficient drying of materials is essential for maintaining product quality, improving shelf life, and enabling complex manufacturing processes across these diverse sectors.

Revisions to 841933

Classification codes are adjusted frequently. The code may have been revised or replaced between system versions. The table below shows the history (newest to oldest) of the code 841933. The most recent 1 version of this code (841933) is in the HS v2022 system (this version):

This page shows the most recent version of code 841933.

Family tree for dryers; lyophilisation apparatus, freeze drying units and spray dryers, not used for domestic purposes

    graph LR
    A["<a href='/classifications/hs/v2022/84'>84: Machinery and mechanical appliances, boilers, nuclear reactors; parts thereof</a>"]
A --> B["<a href='/classifications/hs/v2022/8419'>8419: Machinery, plant (not domestic), or laboratory equipment; electrically heated or not, (excluding items in 85.14) for the treatment of materials by a process involving change of temperature; including instantaneous or non electric storage water heaters</a>"]
B --> C["<a href='/classifications/hs/v2022/841933'>841933: Dryers; lyophilisation apparatus, freeze drying units and spray dryers, not used for domestic purposes</a>"]

    B --> D["<a href='/classifications/hs/v2022/841911'>841911: Heaters; instantaneous gas water heaters, for domestic or other purposes</a>"]
B --> E["<a href='/classifications/hs/v2022/841912'>841912: Heaters; solar water heaters, non-electric</a>"]
B --> F["<a href='/classifications/hs/v2022/841919'>841919: Heaters; instantaneous or storage water heaters, non-electric, (other than instantaneous gas or solar water heaters)</a>"]
B --> G["<a href='/classifications/hs/v2022/841920'>841920: Sterilizers; for medical, surgical or laboratory use, not used for domestic purposes</a>"]
B --> H["<a href='/classifications/hs/v2022/841934'>841934: Dryers; for agricultural products, not used for domestic purposes</a>"]
B --> I["<a href='/classifications/hs/v2022/841935'>841935: Dryers; for wood, paper pulp, paper or paperboard, not used for domestic purposes</a>"]
B --> J["<a href='/classifications/hs/v2022/841939'>841939: Dryers; for products n.e.c. in heading no. 8419, not used for domestic purposes</a>"]
B --> K["<a href='/classifications/hs/v2022/841940'>841940: Distilling or rectifying plant; not used for domestic purposes</a>"]
B --> L["<a href='/classifications/hs/v2022/841950'>841950: Heat exchange units; not used for domestic purposes</a>"]
B --> M["<a href='/classifications/hs/v2022/841960'>841960: Machinery; for liquefying air or gas, not used for domestic purposes</a>"]
B --> N["<a href='/classifications/hs/v2022/841981'>841981: Machinery, plant and equipment; for making hot drinks, for cooking or heating food</a>"]
B --> O["<a href='/classifications/hs/v2022/841989'>841989: Machinery, plant and laboratory equipment; for treating materials by change of temperature, other than for making hot drinks or cooking or heating food</a>"]
B --> P["<a href='/classifications/hs/v2022/841990'>841990: Machinery, plant and laboratory equipment; parts of equipment for treating materials by a process involving a change of temperature</a>"]

    

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    classDef level2 color:#000,fill:#e0a458,stroke:#333,stroke-width:1px
    classDef level3 color:#000,fill:#419d78,stroke:#333,stroke-width:1px
    classDef level4 color:#000,fill:#c04abc,stroke:#333,stroke-width:1px
    classDef level5 color:#000,fill:#f1c40f,stroke:#333,stroke-width:1px
    classDef level6 color:#000,fill:#f1c40f,stroke:#333,stroke-width:1px
    classDef highlight color:#000,fill:#fff,stroke:#000,stroke-width:5px



  %% Apply classes
  class A level2
class B level4
class C level6
class D level6
class E level6
class F level6
class G level6
class H level6
class I level6
class J level6
class K level6
class L level6
class M level6
class N level6
class O level6
class P level6

  class C highlight

  %% class A level1
  %% class B,C level2
  %% class D,E,F,G,H,I level2
  %% class J,K,L,M,N,O,P level3
  %% class C highlight