Pesticide Formulation Types: A Buyer’s Guide

A pesticide formulation is the commercial form in which an active ingredient is supplied. Codes such as EC, SC, SL, WP, WG, OD, and FS describe how the active ingredient is physically formulated, not its mode of action or pest-control mechanism.

For importers, distributors, registration companies, and private-label pesticide brands, formulation type affects much more than appearance. It can influence product specifications, quality-control requirements, storage behavior, packaging, application handling, registration strategy, and market positioning.

There is no universally “best” pesticide formulation. The right choice depends on the active ingredient, target application, local registration, required product performance, packaging format, and the expectations of your distribution market.

What Is a Pesticide Formulation?

A pesticide active ingredient usually needs to be converted into a practical commercial product before it can be stored, transported, measured, diluted, or applied.

The finished formulation may contain the active ingredient together with solvents, carriers, surfactants, dispersants, emulsifiers, stabilizers, or other formulation components required to create the intended physical system.

International and national regulatory systems use formulation codes to distinguish these product forms. For example, the Australian Pesticides and Veterinary Medicines Authority treats formulation type as a defined product characteristic consisting of a formulation code and description.

This distinction matters commercially.

An SC and an SL may both arrive as liquids, but one is a suspension and the other is a solution. A WG and an SG may both be granules, but one disperses in water while the other dissolves.

For buyers, understanding these differences is the starting point for comparing specifications and quotations correctly.

Quick Comparison of Common Pesticide Formulation Types

Code	Formulation Type	What Happens During Use	Main Buyer Considerations
EC	Emulsifiable Concentrate	Forms an emulsion after dilution with water	Emulsion behavior, solvent system, storage, packaging
SC	Suspension Concentrate	Fine solid particles remain suspended	Suspensibility, particle behavior, viscosity, storage
SL	Soluble Concentrate	Forms a solution in water	Solution stability, concentration, storage
OD	Oil Dispersion	Solid active ingredient is dispersed in an oil-based phase	Dispersion stability, pourability, compatibility
EW	Emulsion, Oil in Water	Oil droplets are already dispersed in a water phase	Emulsion and storage stability
SE	Suspo-Emulsion	Combines suspended particles and emulsified droplets	Dispersion stability, physical compatibility
CS	Capsule Suspension	Microcapsules are suspended in liquid	Capsule integrity, suspension and release characteristics
ME	Micro-Emulsion	Forms a fine, thermodynamically stable emulsion system	Solution clarity, compatibility, storage
WP	Wettable Powder	Powder disperses into a suspension	Wettability, suspensibility, wet sieve, dust
WG / WDG	Water Dispersible Granules	Granules break down and disperse into a suspension	Dispersibility, suspensibility, granule quality
SP	Water Soluble Powder	Powder dissolves in water	Dissolution and solution stability
SG	Water Soluble Granules	Granules dissolve in water	Dissolution and storage
GR	Granules	Generally applied in granular form	Particle uniformity, strength, flow properties
FS	Suspension Concentrate for Seed Treatment	Suspension is applied directly or after dilution to seed	Suspension stability, coating behavior, viscosity
TC	Technical Material	Used to manufacture formulated products	Active ingredient content, impurities, manufacturing suitability

This table is a selection of commercially important formulation types rather than a complete catalogue of every formulation code used internationally.

Common Liquid Pesticide Formulations

Liquid formulations can look similar in the container while behaving very differently at the formulation level.

For procurement, the important question is not simply whether the product is liquid. Buyers need to understand whether the active ingredient is dissolved, suspended, emulsified, encapsulated, or dispersed in another phase.

EC – Emulsifiable Concentrate

An EC is a homogeneous liquid formulation designed to form an emulsion after dilution with water.

The active ingredient is generally dissolved in a suitable solvent system together with emulsifying components. After the concentrate enters water, the formulation forms dispersed droplets rather than becoming a true molecular solution.

EC formulations have been widely used across insecticides, herbicides, and fungicides.

For buyers, important considerations may include:

• Emulsion characteristics
• Solvent system
• Low-temperature behavior
• Storage stability
• Container compatibility
• Odor and handling characteristics

CIPAC maintains physical-testing approaches specifically related to pesticide emulsions, reinforcing that EC quality should not be evaluated only by active ingredient content.

SC – Suspension Concentrate

SC stands for Suspension Concentrate.

Unlike an SL, the active ingredient in an SC is generally present as fine solid particles suspended in a liquid phase rather than fully dissolved.

That makes particle and suspension management important.

Typical buyer considerations include:

• Suspensibility
• Particle characteristics
• Viscosity
• Pourability
• Wet-sieve performance where applicable
• Storage stability
• Sedimentation and redispersibility

An SC that looks acceptable immediately after manufacturing can still create commercial problems if physical stability is poorly controlled during storage.

This is why professional SC evaluation should look beyond active ingredient content and appearance.

SL – Soluble Concentrate

SL stands for Soluble Concentrate.

In an SL formulation, the active ingredient is present in a form that produces a solution after dilution according to the intended use system.

This is fundamentally different from an SC.

The easiest distinction is:

SC = suspension

SL = solution

Buyers comparing SL products may focus on:

• Active ingredient concentration
• Solution stability
• pH where relevant
• Crystallization risk
• Low-temperature stability
• Packaging compatibility

SC should therefore never be interpreted as “soluble concentrate.”

OD – Oil Dispersion

OD stands for Oil Dispersion.

In this system, solid active ingredient particles are dispersed in a water-immiscible liquid phase, commonly an oil-based formulation system, before dilution for application.

OD formulations are particularly relevant in some modern herbicide portfolios.

For buyers, evaluation may include:

• Dispersion stability
• Sedimentation behavior
• Pourability
• Wet-sieve characteristics
• Storage stability
• Compatibility between the active ingredient and formulation system

The formulation should be selected because it fits the active ingredient and target product specification—not simply because OD sounds more advanced than EC or SC.

EW – Emulsion, Oil in Water

EW is an oil-in-water emulsion in which fine droplets of an oil phase are already dispersed within a continuous water phase.

This differs from EC, where the concentrated formulation forms the emulsion after it is added to water.

Commercial considerations can include:

• Emulsion stability
• Storage behavior
• Active ingredient compatibility
• Viscosity
• Container compatibility
• Performance after dilution

An EW can be useful where the product design benefits from an emulsion system while reducing reliance on the solvent structure typical of some EC products.

That does not make EW automatically superior to EC. The suitability depends on the specific product.

SE – Suspo-Emulsion

SE stands for Suspo-Emulsion.

It is a more complex formulation system containing both suspended solid particles and emulsified liquid droplets in a continuous liquid phase.

This allows different active ingredients or formulation components with different physical properties to be incorporated into one product system.

Because of that complexity, physical compatibility is especially important.

CIPAC specifically identifies dispersion-stability testing for suspo-emulsions and related dispersed formulations.

For buyers considering an SE combination product, batch consistency and storage stability deserve particular attention.

CS – Capsule Suspension

CS stands for Capsule Suspension.

In a CS formulation, the active ingredient is enclosed or associated with small capsules that remain suspended in a liquid phase.

Encapsulation can be used to modify characteristics such as release behavior, exposure profile, odor, or handling depending on the active ingredient and product design.

Buyer evaluation may include:

• Capsule consistency
• Suspension stability
• Storage stability
• Release characteristics
• Packaging compatibility

A CS should be evaluated as its own formulation system rather than compared with an SC only by active ingredient concentration.

ME – Micro-Emulsion

ME stands for Micro-Emulsion.

A micro-emulsion uses a finely structured mixture of phases supported by appropriate surfactant systems.

For commercial procurement, buyers should focus less on the marketing terminology and more on whether the product specification defines the physical and chemical characteristics required for stable manufacturing and storage.

As with other liquid formulations, the right choice depends on the active ingredient, intended use, registration, manufacturing feasibility, and local market requirements.

Common Solid Pesticide Formulations

Solid formulations remain important across international pesticide markets, particularly where distributors prefer sachets, bags, cartons, concentrated products, or dry formulations for storage and distribution.

However, not all powders or granules behave the same way after they enter water.

WP – Wettable Powder

WP stands for Wettable Powder.

A WP is a powder formulation designed to be dispersed in water to form a suspension before application.

It does not normally dissolve completely.

Buyer considerations can include:

• Wettability
• Suspensibility
• Wet-sieve characteristics
• Powder fineness
• Dust generation
• Moisture protection
• Packaging strength

WP is a mature commercial format with extensive use in many agricultural markets.

Its suitability depends on local registration, handling expectations, packaging strategy, and competitive positioning.

WG / WDG – Water Dispersible Granules

WG stands for Water Dispersible Granules.

WDG—Water-Dispersible Granules—is also widely used commercially to describe the same general formulation category.

The key word is dispersible.

After entering water, the granules disintegrate and form a dispersion or suspension. They should not be confused with water-soluble granules.

CIPAC maintains formulation-specific methods related to water-dispersible granules, including suspensibility and granule-related physical properties.

From a procurement perspective, important properties may include:

• Granule integrity
• Dispersibility
• Suspensibility
• Wet-sieve performance
• Dust level
• Flowability
• Moisture sensitivity

A useful real-world example is Captan. POMAIS supplies both Captan 80% WDG and Captan 50% WP. The active ingredient is the same, but formulation, concentration, packaging direction, and market positioning differ.

SP – Water Soluble Powder

SP stands for Water Soluble Powder.

Unlike WP, an SP is intended to dissolve in water and form a solution.

The key distinction is therefore:

WP disperses into a suspension.

SP dissolves into a solution.

For buyers, the evaluation emphasis may shift toward:

• Dissolution
• Solution stability
• Moisture control
• Active ingredient concentration
• Packaging protection

Using WP and SP interchangeably in specifications or quotations can create serious misunderstandings.

SG – Water Soluble Granules

SG stands for Water Soluble Granules.

These granules are intended to dissolve after addition to water.

That makes SG fundamentally different from WG.

Do Not Confuse WG and SG

WG:

disperses

SG:

dissolves

The distinction seems small, but it represents two different physical formulation systems.

The same logic applies to other commonly confused codes:

• SC is not SL.
• WP is not SP.
• WG is not SG.

For procurement teams, these distinctions should be resolved before quotation comparison, registration review, or packaging development begins.

GR – Granules

GR describes a granular formulation generally intended for application in granular form rather than first being dispersed in a spray tank.

Depending on the product, buyer considerations may include:

• Particle-size distribution
• Granule strength
• Flowability
• Dust generation
• Active ingredient uniformity
• Moisture sensitivity
• Packaging

GR products may be used in crop, soil, pest-control, or other registered application systems.

The actual application should always follow the locally approved product label.

Seed Treatment Formulations

Seed treatment products deserve separate consideration because their formulation needs differ from conventional foliar or soil spray products.

The formulation must work with seeds, treatment equipment, coating systems, and the intended application process.

FS – Suspension Concentrate for Seed Treatment

FS is a suspension concentrate designed specifically for application to seed, either directly or after permitted dilution.

Regulatory formulation references define FS around this seed-treatment application rather than treating it as a standard SC.

Important procurement considerations may include:

• Suspension stability
• Viscosity
• Seed coverage
• Flow through treatment equipment
• Colorant requirements where applicable
• Drying characteristics
• Packaging
• Storage stability

For example, POMAIS supplies Thiamethoxam 35% FS as a dedicated seed-treatment formulation rather than a conventional foliar liquid product.

The correct FS specification should therefore reflect the seed-treatment system in which the product will be used.

What Is TC Technical Material?

TC means Technical Material.

It should not be confused with a finished end-use pesticide formulation.

Technical material is generally an upstream active-ingredient material used as a basis for manufacturing formulated products.

A simplified supply chain looks like this:

Technical Material → Formulation Manufacturing → EC / SC / WP / WG / OD / Other Finished Product

For technical-material buyers, important considerations can include:

• Active ingredient content
• Relevant impurities
• Manufacturing source
• Specification
• Batch consistency
• Regulatory requirements

For formulated-product buyers, however, TC quality is only one part of the final product.

Once the technical material is converted into an EC, SC, WDG, OD, or another formulation, the physical quality of that finished formulation must also be controlled.

How Should Buyers Choose a Pesticide Formulation?

There is no formulation code that is automatically better than all others.

The right choice comes from matching product chemistry with market requirements.

Consider the Active Ingredient First

Not every active ingredient is technically suited to every formulation system.

Solubility, physical state, stability, compatibility with solvents or carriers, concentration, and other properties can influence which formulations are technically realistic.

For this reason, formulation selection should begin with technical feasibility rather than packaging preference.

Consider How the Product Will Be Used

Different application systems create different formulation requirements.

Examples include:

• Foliar sprays
• Soil treatments
• Seed treatment
• Direct granular application
• Public-health pest control
• Professional pest-management systems

A formulation that fits one application channel may not be suitable for another.

Consider the Destination Market

Commercial formulation selection should also reflect:

• Existing local registrations
• Distributor experience
• Farmer or applicator preferences
• Common package sizes
• Climate and storage environment
• Market price positioning
• Competitive products

A formulation that performs well technically can still be a poor commercial choice if it does not fit the target distribution market.

Consider Packaging and Supply Strategy

Liquid and dry formulations require different packaging structures.

A distributor planning 100 mL, 250 mL, or 1 L retail bottles has different requirements from one purchasing 25 kg bags or bulk drums.

The final formulation decision should therefore involve technical, regulatory, packaging, and commercial teams—not procurement price alone.

How Formulation Type Changes Quality-Control Requirements

One of the most important procurement principles is that different formulations require different physical quality checks.

CIPAC maintains separate methods for characteristics such as emulsion behavior, suspensibility, dispersion stability, wet sieving, dissolution, and other formulation properties.

A single generic statement such as “quality passed” is therefore not enough.

Formulation	Typical Buyer QC Focus
EC	Emulsion characteristics, storage behavior, appearance
SC	Suspensibility, particle behavior, viscosity, wet sieve, storage
SL	Solution stability, concentration, crystallization behavior
OD	Dispersion stability, pourability, wet sieve, storage
EW	Emulsion stability and physical storage behavior
SE	Dispersion stability and phase compatibility
CS	Capsule and suspension characteristics
WP	Wettability, suspensibility, wet sieve, powder quality
WG / WDG	Dispersibility, suspensibility, wet sieve, granule properties
SP	Dissolution and solution stability
SG	Dissolution and granule quality
FS	Suspension stability, viscosity, coating-related behavior
GR	Particle uniformity, strength, flowability

Regulatory chemistry guidance also recognizes that relevant physicochemical properties should be monitored according to formulation type during storage-stability assessment.

When sourcing from a new manufacturer, buyers should ask which parameters are included in the commercial specification and which are checked for each production batch.

POMAIS buyers can also review our pesticide formulation production and quality-control process to see how production, inspection, packaging, warehousing, and shipment preparation are managed.

How Formulation Type Affects Packaging and Logistics

Formulation selection also changes how a product should be packed, stored, handled, and shipped.

Liquid Formulations

EC, SC, SL, OD, EW, and similar liquid formulations may require attention to:

• Bottle or drum material
• Closure compatibility
• Leakage control
• Induction sealing where required
• Headspace
• Product viscosity
• Temperature exposure
• Pack size

A solvent-containing formulation may have different container-compatibility considerations from an aqueous suspension.

Dry Formulations

WP, WG, SP, SG, and other dry formulations may require attention to:

• Moisture protection
• Bag laminate
• Sealing quality
• Powder leakage
• Granule breakage
• Dust
• Carton strength

Dry does not automatically mean easier or cheaper to ship.

Transport efficiency depends on concentration, package size, total order structure, product classification, packaging material, and destination requirements.

For private-label projects, formulation and packaging should therefore be planned together. POMAIS supports custom pesticide formulations and packaging including bottle, bag, label, carton, and brand-development requirements for export markets.

Does Formulation Type Affect Pesticide Registration?

Yes. Formulation type can be part of the registered identity of an agricultural chemical product.

For example, APVMA guidance explicitly recognizes formulation type through a formulation code and description as a defined product particular.

This matters because:

same active ingredient does not automatically mean same registered product.

Changes to any of the following may have regulatory significance depending on the destination market:

• Active ingredient
• Concentration
• Formulation type
• Formulation composition
• Intended crop
• Target pest or disease
• Application method
• Label use pattern

A buyer should therefore not assume that moving from WP to WG, EC to SC, or SC to OD is simply a packaging or marketing change.

Before selecting a formulation for import, confirm whether that exact product format fits the local registration route.

The destination authority’s requirements should always take priority over a supplier’s general product catalogue.

Common Mistakes When Comparing Pesticide Formulations

Assuming Higher Concentration Always Means Better Quality

Higher active ingredient content may reduce product volume or change market positioning, but it does not automatically indicate better formulation quality.

A stable 40% SC and a poorly formulated higher-concentration SC are not equivalent simply because one contains more active ingredient.

Treating SC and SL as the Same

Both are liquids.

But SC is a suspension system while SL is a soluble system.

Their specifications and QC requirements are different.

Assuming WG Dissolves in Water

WG is water dispersible.

It normally forms a dispersion rather than behaving like a soluble SG product.

Treating WP and WG as Commercially Identical

Both can produce suspensions after mixing, but their physical form, handling, dust characteristics, manufacturing process, packaging, and QC requirements differ.

Choosing Formulation Only by Price

A lower formulation quotation may involve different:

• Active concentration
• Raw-material structure
• Manufacturing complexity
• Packaging
• QC
• Order quantity
• Registration support

The quotation should be normalized before comparison.

Ignoring Storage Conditions

Temperature, moisture, prolonged storage, and transportation conditions can influence physical product stability.

The commercial formulation must fit the realities of the destination market.

Comparing COAs Without Checking Formulation-Specific Parameters

Two COAs can show identical active ingredient content while providing very different insight into physical formulation quality.

Buyers should confirm which parameters belong in the agreed specification.

Changing Formulation Without Checking Registration

Changing EC to SC or WP to WG should not be treated as a cosmetic change.

Confirm the regulatory impact before committing to commercial production.

What Should You Include in a Pesticide Formulation RFQ?

A clear RFQ makes technical evaluation and price comparison much easier.

Instead of sending:

“Please send your pesticide price list.”

provide the supplier with enough information to identify the actual product you want.

RFQ Item	Example
Active ingredient	Mesotrione
Concentration	10%
Formulation	OD
Destination market	Country / region
Required packaging	1 L × 12 bottles
Order volume	5,000 L
Registration status	Existing / new registration
Label language	English / Spanish / Russian / other
Documentation	COA, SDS, TDS, registration-related files
Private label	Yes / No

If you are not sure which formulation is appropriate, provide:

• Active ingredient
• Target market
• Intended crop or use
• Current competing products
• Preferred packaging
• Estimated volume

The manufacturer can then evaluate formulation feasibility before providing a commercial proposal.

This produces a much more useful conversation than comparing products only by active ingredient name.

Choosing the Right Formulation with POMAIS

POMAIS works with pesticide importers, distributors, registration partners, and private-label brands that need products matched to their local market rather than a one-size-fits-all catalogue.

Our crop protection product portfolio includes multiple formulation directions across insecticides, herbicides, fungicides, seed treatments, plant growth regulators, and public-health pest-control products.

Depending on the active ingredient and project, formulation directions may include EC, SC, SL, WP, WG/WDG, OD, EW, CS, ME, FS, GR, and other commercially relevant formats.

We can support buyers with:

• Formulation selection
• Product specifications
• Batch quality control
• Private-label packaging
• Multilingual labels
• Technical documentation
• Production coordination
• Export preparation

The starting point is not deciding that SC, EC, or WDG is “best.”

The starting point is understanding your active ingredient, destination market, registration route, packaging, target channel, and order requirements.

Frequently Asked Questions

What Are the Most Common Pesticide Formulation Types?

Common commercial formulations include EC, SC, SL, WP, WG/WDG, OD, EW, SE, CS, SP, SG, GR, and FS.

The actual range is much broader, and formulation selection depends on the active ingredient and intended product.

What Is the Difference Between EC and SC?

EC is an emulsifiable concentrate that forms an emulsion after dilution with water.

SC is a suspension concentrate in which fine solid active ingredient particles are suspended in a liquid phase.

Their physical structure and quality-control requirements are therefore different.

Is WG the Same as WDG?

WG is the standard formulation code commonly used for Water Dispersible Granules.

WDG is also widely used commercially for Water-Dispersible Granules.

In commercial pesticide sourcing, the terms are commonly used for the same general formulation category, but specifications should still clearly define the actual product.

What Is the Difference Between WP and WG?

WP is supplied as a wettable powder.

WG is supplied as water-dispersible granules.

Both generally form suspensions after mixing with water, but WG and WP differ in physical form, handling, manufacturing, packaging, and formulation-specific QC considerations.

What Is the Difference Between SC and SL?

SC is a suspension system.

SL is a soluble concentrate that produces a solution.

Although both are liquid commercial products, their formulation structure is fundamentally different.

What Is an OD Pesticide Formulation?

OD means Oil Dispersion.

It generally contains solid active ingredient particles dispersed within a water-immiscible liquid phase before dilution for application.

OD is used in selected pesticide products where the formulation system fits the active ingredient and target product requirements.

What Does FS Mean on a Pesticide Label?

FS is a suspension concentrate specifically intended for seed treatment.

It is applied to seed directly or according to the approved treatment system and should not be treated as an ordinary foliar SC product.

Which Pesticide Formulation Is Best?

There is no universally best pesticide formulation.

The right formulation depends on:

• Active ingredient properties
• Required concentration
• Application method
• Product specification
• Quality requirements
• Local registration
• Storage environment
• Packaging
• Distribution channel
• Commercial positioning

Professional procurement should therefore compare formulations by market fit and technical suitability, not by formulation code alone.

Need Help Selecting a Pesticide Formulation for Your Market?

If you are developing or sourcing a pesticide product, send POMAIS the active ingredient, preferred concentration, destination country, packaging requirements, registration status, and estimated order volume.

We can review available formulation directions, product specifications, packaging options, documentation requirements, and production feasibility before quotation.

Discuss your pesticide formulation requirements with POMAIS.