Come definire le specifiche del prodotto fitosanitario prima dell'approvazione del fornitore

Approving a pesticide supplier should not begin with price, a sample, or a generic product name.

It should begin with a clear answer to one question:

What exactly must this product meet before we consider it acceptable?

For pesticide importers, distributors, registration companies, and private-label brands, a product specification creates that standard.

It connects supplier selection with sample approval, commercial production, batch testing, and future repeat orders.

A stronger procurement sequence is:

Product Requirement → Agreed Specification → Sample Testing → Supplier Approval → Bulk Production → Batch QC → COA

Il principio fondamentale è semplice:

Approve the specification before approving the supplier.

Why Set the Specification Before Approving the Supplier?

A quotation such as:

Azoxystrobin 250 g/L SC

does not fully define the commercial product.

Two suppliers may offer the same active ingredient, concentration, and formulation code while using different:

• Technical material sources
• Formulation systems
• Physical-quality targets
• Profili di impurità
• Storage-performance standards
• Metodi di prova
• Internal QC requirements

If the buyer approves the supplier first and discusses quality later, the commercial relationship begins with an unclear acceptance standard.

That creates problems when:

• The sample differs from future production
• Buyer and supplier laboratories report different results
• One party uses tighter limits than the other
• A production batch falls outside the buyer’s expectations
• Registration documents no longer match the commercial product

A written specification gives both sides the same technical reference.

For supplier comparisons, see how to compare pesticide suppliers beyond price.

Start With the Exact Product Identity

Before setting individual quality parameters, define the product itself.

A basic product identity should normally include:

Articolo	Esempio
principio attivo	Azossistrobina
Nominal concentration	250 g / L
Formulazione	SC
Commercial product identity	Formulazione finita
Manufacturing/source reference	Where relevant
Mercato di destinazione	Defined country/registration market
Registration relationship	Confirm where applicable

This first step sounds obvious, but document mismatches frequently begin here.

Per esempio:

250 g/l SC

and

25% di potenza massima

are not interchangeable products simply because they contain the same active ingredient.

The formulation changes:

• Proprietà fisiche
• Requisiti di prova
• Packaging
• Comportamento dell'applicazione
• Identità di registrazione

The specification should therefore describe the exact commercial formulation being purchased.

Which Quality Parameters Should Be Included?

A pesticide product specification should contain the parameters needed to define acceptable commercial quality.

The exact list depends on the active ingredient, formulation, registration, and intended market.

Contenuto di ingredienti attivi

The specification should define the nominal active ingredient content and the applicable acceptance range.

The tolerance should come from an appropriate technical basis, such as:

• Registered product requirements
• Applicable recognized specifications
• Validated internal standards
• Mutually agreed commercial requirements

Do not create a universal percentage tolerance and apply it to every pesticide.

Relevant Impurities

For technical materials and certain formulated products, relevant impurities may need to be controlled.

A technical material specification that shows only:

Active ingredient: 97%

may still be incomplete if important impurity limits are applicable.

Impurity requirements should be based on the relevant product/source and regulatory context.

Formulation-Specific Physical Properties

Finished formulations need physical-quality parameters that reflect how the formulation is designed to behave.

A good SC specification does not look the same as a good EC, WP, or WDG specification.

Storage-Related Requirements

Where applicable, specifications may also include parameters associated with:

• Accelerated storage
• Stabilità alle basse temperature
• Persistent separation
• agglomerazione
• Ridisperdibilità
• Other formulation-specific stability behavior

The objective is not to create the longest specification possible.

It is to define the parameters that meaningfully protect the product’s registered and commercial quality.

Which Parameters Change by Formulation Type?

Different pesticide formulations require different quality-control priorities.

Formulazione	Typical Specification Areas
TC	Active ingredient content, relevant impurities, moisture or other source-specific requirements
SC	Active ingredient, appearance, pH where applicable, suspensibility, wet sieve, viscosity or pourability, storage behavior
EC	Active ingredient, appearance, emulsion characteristics, acidity or water where relevant
WP	Active ingredient, wettability, suspensibility, wet sieve, moisture, powder condition
WG / WDG	Active ingredient, dispersibility, suspensibility, wet sieve, dustiness, attrition or granule integrity, moisture
SL	Principio attivo, aspetto, stabilità della soluzione, pH o acidità, ove applicabile
OD	Active ingredient, dispersion behavior, wet sieve, viscosity and storage-related properties
FS	Active ingredient, suspension behavior, viscosity and relevant seed-treatment formulation properties

These are typical specification areas, not universal mandatory limits.

A particular product may require:

• Più parametri
• Fewer parameters
• Metodi diversi
• Different acceptance ranges

The correct specification must match the exact formulation.

Per una panoramica più ampia, vedere il nostro tipi di formulazioni di pesticidi - guida all'acquisto.

How Should Buyers Set Acceptance Limits?

A specification parameter becomes useful only when the buyer can determine whether a result passes or fails.

Weak specification wording includes:

• “Good suspensibility”
• “Normal pH”
• “Stable emulsion”
• “Fine powder”
• “No serious sediment”

These descriptions are subjective.

A stronger specification defines:

Parameter → Test Method → Acceptance Requirement

Per esempio:

Parametro	Metodo di prova	Accettazione
principio attivo	Agreed analytical method	Defined acceptable range
Sospensibilità	Agreed physical method	Defined minimum requirement
pH	Agreed method	Defined range
setaccio bagnato	Agreed method	Defined maximum or minimum as applicable

The purpose is not to create unnecessarily tight limits.

The purpose is to make the specification misurabile e ripetibile.

Why Must the Test Method Be Defined?

A number without a test method can still create disputes.

Two laboratories may test the same sample and obtain different results because they used different:

• qualità dell'acqua
• La temperatura
• Condizionata
• preparazione del campione
• Procedure analitiche
• Versioni del metodo
• Metodi di calcolo

This is particularly relevant for formulation properties such as:

• Sospensibilità
• bagnabilità
• Stabilità dell'emulsione
• disperdibilità
• setaccio bagnato
• schiuma
• fluidità

Where appropriate, buyer and supplier can agree on:

• CIPAC methods
• Validated manufacturer methods
• Registered analytical methods
• Other accepted laboratory procedures

For important acceptance parameters, the method should be clear enough that both parties understand how compliance will be assessed.

A specification is stronger when it tells the laboratory not only:

cosa testare

ma anche:

how the result should be generated.

FAO/WHO Specification vs Commercial Purchase Specification

FAO/WHO pesticide specifications can provide important technical references, but buyers should understand what they represent.

They should not automatically be copied into every supplier contract without confirming applicability.

Una distinzione utile è:

FAO/WHO or Other Recognized Reference Specification

Provides an established technical quality framework for specific pesticide products or sources under the relevant specification system.

Registered Product Requirement

Defines the product identity and quality requirements accepted under a particular registration.

Commercial Purchase Specification

Defines the quality standard the buyer and supplier agree to use for sample approval, production, and commercial acceptance.

These documents may overlap, but they are not automatically identical.

A buyer should not assume that:

“This active ingredient has an FAO specification, therefore every manufacturer’s product is automatically covered by it.”

The specification used for procurement should match the actual commercial and regulatory situation.

Specification vs TDS vs COA: What Is the Difference?

These documents are closely related but serve different purposes.

Specifiche

Definisce:

What the product must meet.

TDS

Descrive:

What technical product is being offered.

COA

Rapporti:

What was actually measured in the sample or batch.

That relationship can be summarized as:

Specification = Acceptance Standard

TDS = Product Technical Profile

COA = Actual Test Results

A COA is therefore most useful when its results can be compared directly with an approved specification.

For a detailed document comparison, see COA vs TDS vs SDS per i pesticidi.

Puoi anche consultare la nostra guida più ampia su documenti tecnici sui pesticidi.

Should Buyers Use the Tightest Possible Specification?

No.

A tighter specification is not automatically a better specification.

Over-specification can create:

• Rifiuto non necessario del lotto
• Costo di produzione più elevato
• Controversie con i fornitori
• Complessità dei test
• Requirements with little practical quality value
• Limits that commercial-scale production cannot consistently maintain

The objective should be:

strict enough to protect product identity and commercial quality, but technically justified and realistically measurable.

For example, a buyer should not add a physical property simply because another pesticide includes it.

The parameter should have a real technical reason to be controlled.

Likewise, do not automatically convert every “typical value” in a TDS into a contractual acceptance limit.

A typical technical value and a purchase specification serve different purposes.

Test the Specification Before Supplier Approval

Once the specification has been agreed, test a representative sample against it.

La sequenza corretta è:

Agreed Specification

↓

Campione rappresentativo

↓

Analisi di laboratorio

↓

Compare Results With Acceptance Limits

↓

Approvazione del campione

↓

Supplier Technical Approval

A sample should not simply be approved because:

"Sembra buono."

The stronger conclusion is:

The sample complies with the agreed product specification.

This also creates a technical bridge to future commercial production.

For a complete workflow, see Analisi dei campioni di pesticidi prima di un ordine all'ingrosso.

Can the Supplier Meet the Specification at Commercial Scale?

This is one of the most important questions in supplier approval.

A laboratory or pilot sample may meet a specification.

But commercial sourcing requires the supplier to produce:

• 1 tonnellata
• 5 tonnellate
• 20 tonnellate
• Ripeti gli ordini

with comparable quality.

Supplier approval should therefore evaluate more than the first sample.

Ask whether normal production can consistently control:

• Contenuto di ingredienti attivi
• Formulation properties
• Raw-material variability
• Condizioni di lavorazione
• Controllo qualità del lotto
• Archiviazione
• Compatibilità degli imballaggi

A useful commercial specification must be achievable consistently at normal manufacturing scale.

An unusually perfect development sample has limited value if future production varies significantly from batch to batch.

Separate Product and Packaging Specifications

For private-label pesticide projects, the formulation specification and packaging specification should be linked but kept separate.

Specifiche

Covers the pesticide itself:

• principio attivo
• Concentrazione
• Formulation properties
• Parametri di qualità
• Metodi di prova
• Limiti di accettazione

Specifiche di imballaggio

May cover:

• Bottle or bag material
• Dimensione del contenitore
• berretto
• Sigillo interno
• etichetta
• Stampa
• Codificazione batch
• Scatola di cartone
• Configurazione pallet

A pesticide can meet every laboratory requirement and still create commercial problems if the package leaks or fails during transport.

Per questo motivo:

product approval and packaging approval should be treated as two separate checkpoints.

What Changes Should Trigger Re-Approval?

Supplier approval should not mean that the product can change indefinitely without review.

Material changes may require technical reassessment.

Alcuni esempi possono includere:

• Technical active ingredient source change
• Manufacturing site change
• Significant formulation change
• Co-formulant system change
• Major specification revision
• Relevant analytical-method change
• Packaging-material change
• Registration-related change

The exact re-approval requirement depends on the product and market.

For registration projects in particular, source and formulation changes may have regulatory consequences.

A good supplier relationship should therefore include appropriate controllo del cambiamento.

Where a change could affect the agreed product identity, quality, or regulatory project, it should be communicated before routine commercial supply.

Use Specification Version Control

A specification should be identifiable.

Useful document-control information can include:

• Nome prodotto
• Formulazione
• Numero di specifica
• Revision/version
• Data effettiva
• Riferimento di approvazione

This avoids future disputes such as:

“Which specification was this order produced against?”

For long-term repeat orders, version control becomes increasingly important.

The commercial order should refer to the correct approved specification version whenever practical.

Pesticide Product Specification Template

A buyer can use the following structure as a starting point.

Campo di specifica	Cosa dovrebbe definire l'acquirente
Identità del prodotto	Active ingredient + concentration + formulation
Product/source reference	Where technically or regulatorily relevant
Forma	Clear measurable description
Contenuto di ingredienti attivi	Nominal value + applicable acceptance range
Impurità rilevanti	Ove applicabile
pH / acidity	Where technically relevant
Formulation physical properties	According to SC, WP, WG, EC, SL, OD, FS, etc.
Storage-related requirements	Ove applicabile
Metodo di prova	CIPAC, validated, registered or otherwise agreed method
Limite di accettazione	Clear pass/fail requirement
COA parameters	Which results should appear on batch documentation
Revisione	Version / date
Note aggiuntive	Requisiti specifici del prodotto

This template should be adapted to the actual pesticide.

Do not mechanically apply every row to every formulation.

Weak Specification vs Better Specification

Consideriamo un esempio semplificato.

Specifiche deboli

Imidacloprid 200 g/L SL

• Active ingredient: 200 g/L
• Appearance: Good
• pH: Normal
• Stability: Good

The problem is that:

• “Good” is subjective
• “Normal” is undefined
• Test methods are missing
• Acceptance limits are unclear

Better Specification Structure

Imidacloprid 200 g/L SL

Definire:

• Identità esatta del prodotto
• Active ingredient acceptance range
• Relevant appearance requirement
• pH requirement where applicable
• Solution/stability parameters where relevant
• Metodi di prova
• Criteri di accettazione chiari
• Revisione delle specifiche

The second format can support:

• Test di esempio
• Approvazione del fornitore
• Controllo qualità del lotto
• Soluzione della disputa
• Riordino continuo

That is the practical purpose of a commercial specification.

Supplier Approval Checklist

Before approving a pesticide supplier, confirm:

Vedi	Domanda dell'acquirente
Identità del prodotto	Is the exact AI, concentration and formulation defined?
Idoneità normativa	Does the specification match the intended registered/commercial product?
principio attivo	Is an appropriate acceptance range defined?
Impurità rilevanti	Are applicable impurity limits addressed?
Proprietà fisiche	Are the correct formulation-specific parameters included?
Metodi di prova	Can buyer and supplier produce comparable results?
Limiti di accettazione	Is pass/fail measurable?
Campione	Has a representative sample been tested?
Scala commerciale	Can normal production consistently meet the specification?
COA	Will future batch results be reported against the agreed parameters?
Cambia controllo	Will material product/source changes be communicated?
Controllo della versione	Is the approved specification clearly identified?
Packaging	Has a separate packaging specification been approved where required?

Supplier approval should come after these technical questions are sufficiently resolved.

Domande frequenti

Is a Pesticide Specification the Same as a COA?

No.

The specification defines the required quality standard.

The COA reports actual test results for a particular sample or production batch.

Who Should Set the Pesticide Product Specification?

The buyer and supplier should agree on it.

The final requirements should be informed by the applicable registration, recognized technical references, validated methods, and commercial quality needs.

Can I Copy an FAO/WHO Specification for Any Supplier?

Non automaticamente.

FAO/WHO specifications can be valuable references, but applicability to a particular manufacturing source and product must be confirmed.

Should Every Formulation Use the Same Specification?

No.

SC, EC, WP, WG/WDG, SL, OD, FS and other formulations have different physical-quality characteristics and therefore different specification needs.

Does a Tighter Specification Always Mean Better Quality?

No.

Limits should be technically justified, measurable, and realistic for consistent commercial production.

Overly restrictive specifications can create unnecessary cost and rejection without improving practical product quality.

Should the Test Method Be Included in the Specification?

For important measurable parameters, it is highly useful to define or reference the agreed test method where applicable.

This improves comparability between supplier and buyer laboratories.

Can a Sample Pass While the Supplier Still Fails Approval?

Sì. Le serrature scorrevoli portatili e i catenacci a superficie possono essere usati per mettere in sicurezza una porta a scomparsa dall'esterno. Alcuni kit con catena di sicurezza consentono anche il bloccaggio esterno con chiave o manopola girevole.

A passing sample does not automatically prove the supplier can maintain commercial-scale batch consistency, documentation, source stability, and supply reliability.

Does Meeting the Specification Prove Field Efficacy?

No.

Product specification confirms defined chemical and physical quality characteristics.

Biological efficacy depends on separate factors such as target organism, crop, use rate, timing, local conditions, and registered claims.

Should Packaging Be Included in the Product Specification?

It is usually clearer to keep the formulation specification and packaging specification separate but linked within the same purchasing project.

Can the Specification Change After Supplier Approval?

Yes, but material changes should be evaluated through an appropriate change-control process, especially when they affect registered product identity, manufacturing source, formulation, or commercial quality.

Set the Standard Before Approving the Supplier

Pesticide supplier approval is stronger when both parties know exactly what product is being approved.

La sequenza corretta è:

Define → Agree → Test → Approve → Produce → Verify

At POMAIS, commercial sourcing projects can be discussed around the exact active ingredient, concentration, formulation, destination market, product specification, packaging, and expected order quantity before bulk production.

This gives the buyer a clear technical basis for:

• Confronto tra fornitori
• Approvazione del campione
• Controllo qualità del lotto
• COA review
• Coerenza dell'ordine ripetuto

The objective is not to create unnecessary specification complexity.

It is to make sure that the product approved before the first order is the same quality standard used for future commercial production.