There are various coating materials applied to fertilizer particles to control solubility in soil. Usually, the materials are used for granular or prilled nitrogen fertilizer. Anti-dust agents are used to producing dust-free fertilizers that will provide consistent and predictable application results.

1. What You Need To Know About Fertilizer
Coating Material Testing
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coating-material-testing
The exponential growth of the global population has urged the
agriculture sector to increase crops' production and augment the
food supply, consequently impacting food production costs.
Simultaneously, inefficient uses of fertilizer products have also
affected myriad environmental issues with devastating effects on
groundwater and ecology, persuading an urgent call for
implementing more efficient fertilizer uses.
Along with new growing crop nutrition methodologies, these
factors push the speciality fertilizer market to produce more

2. innovative and efficient products with minimal environmental
damage. The coating is an approach that can make speciality
products and enhance the quality of the existing product. There are
various coating materials applied to fertilizer particles to control
solubility in soil. Usually, the materials are used for granular or
prilled nitrogen fertilizer.
Fertilizer coating materials include the highest N or prilled
Nitrogen, the base material for most coated fertilizers. Elemental
sulphur was used for fertilizer coating previously, spraying molten
sulphur over the urea granules. Beyond these, other coated
fertilizers materials are formulated by reacting various resin-based
polymers on the surface of fertilizer granules.
Anti dusting agents are used to produce dust-free fertilizers that
will provide consistent and predictable application results.
Know About: Defoamer Chemical
How to choose the right Deformer, and which is
the proper method to test?
There are an array of considerations in the choice of defoamer. It
depends upon the type of product, requirement of industries, shell
life, methods and much more.

3. There are two types of laboratory methods used that are relevant to
release time. The standard practice incubates common release
fertilizer for specific nutrient release time until a threshold amount
of nutrients is released. The other is an accelerated method that
sets CRF for a shorter time at a particular higher temperature.
 The temperature-controlled incubation method or the standard
procedure-
TCIM method involves incubating a beaker that contains CRF and
water at a consistent temperature of 77 degrees F.
 Accelerated incubation method
The accelerated method uses four samples placed in hollow glass
tubes wrapped by a water jacket where pieces are placed in the
water, and water controls the temperature. The temperature is
increased from about 77 to 140 degree F over time to release the
curve. Ether water of dilute citric acid is used as the extracting
solution.
Another method is observed using five separate funnels to incubate
resin-coated CRF at a temperature of 122 to 194 degree F and
divulged that 176 was the right temperature partially due to
reduced coating integrity of 194 degree F.
The accelerated lab test method's primary benefit is it reduces time
and cost compared to standard approaches. These are lab tested
methods for achieving the best testing results.

4. Some other methods to assess defoaming
efficiency test are
 Foam height method: A certain amount of pain is used with
the marking line, and there air introduced in the coating system
with the help of a micro air compressor to observe foam's
height.
 Specific gravity method: Fertilizer coating material
suppliers use high agitated paint inserted into a density cup and
then measure paint density. The colour is sealed and stored and
later measure after a certain period to notice the density
changes.
 Spray coating method: Anti dust Agent Suppliers use
defoamer for paint that is stirred at higher speed and poured
immediately on polyester film in which the frame is placed at
an angle of 25 degrees. The surface state of the dry film is
observed.
There are many extensive testing methods to know the efficiency of
anti dust agents, cycling bubble methods, gas drum methods, etc.
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