Silica Ball, Activated, carbon, silica gel, mineral
Chemical Dry
Absorb moisture by chemically responding with moisture
phosophorous pentoxide dark sulfuric acid and etc
What to dey
How to dry gas
Equip liquid or gas to the specific equipment and let the target gas go through the equipment for drying
How to dry liquid
Method of evaporation by mixing dry agent to the solution
How to dry Solid
Use equipment such as desiccator, infrared ray dry, and etc.
Acid desiccant
How to dry gas
Absorb flammable gas with acid desiccant
Dark sulfuric acid, phosphorous pentoxide, and etc
Flammable desiccant
Absorb acid gas with flammable desiccant
Soda lime
Neutral desiccant
Normally absorb vapor
Silica Gel
Classification of Desiccant (Classification according to KS T 1084)
Relative Humidity
Unit
Low Moist Type
High Moist Type
Type 1 (Container)
Type 2 (Small bag that has moisture permeability)
Type 1
Type 2
Absorbent at relative humidity of 20%
%
Above 8.0
Above 3.0
Absorbent at relative humidity of 50%
Above 20.0
Above 10.0
Absorbent at relative humidity of 90%
Above 30.0
Above 50.0
Percentage of water content
Above 2.0
Above 2.5
Above 2.0
Above 2.5
pH Value
min
4~8
Small bag dropping strength
Number of damages: Below 1
Number of damages: Below 1
★ %Dropping strength = 10 at 1.5m for over 50g, 40 at 2.5m for below 50f (number of damages)
Calculating Usage (Method according to KSA1032)
There is a theoretical calculation method based on the worst environment but it is too excessive to apply to reality.
In the vehicle industry, 200g is used for every 1m³.
Also, transportation environment is considered or increase/decrease is applied according to experience.
3. Precautions when selecting and using Absorbent
Supplement in the case there is a lack after checking the moisture permeability of the packing material
Check the existence of inner moisture (Cause of dew condensation)
Check the warning of permeability such as pallet
Consider the seasonal factors (seawater, fog area, and etc.)
Theoretical usage amount can exceed according to situation. Please use effectively by checking experience
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