Matcha COA & Specifications: A Guide for Wholesale Buyers

Last updated: September 2026

When buying matcha for a café, restaurant, bakery or food-manufacturing business, tasting a sample is important — but it is not the whole supplier-selection process.

Commercial buyers may also need to know exactly what product they are purchasing, which batch is being supplied and what quality documentation is available.

Two of the most useful documents are:

Product Specification and Certificate of Analysis (COA).

They are not the same thing.

This guide explains what each document tells you, what to check and what to request before placing a wholesale matcha order.

What Is a Matcha COA?

COA stands for Certificate of Analysis.

A COA reports analytical results relating to the product, sample or production batch identified on the document.

Depending on the product and testing scope, it may include information such as:

• Microbiological results
• Moisture
• Pesticide-residue testing
• Heavy-metal testing
• Other contaminants or quality parameters

Not every COA includes every test.

So instead of asking only:

“Do you have a COA?”

ask:

“What does the COA cover, and does it apply to the product or batch I am buying?”

A document is only useful when you understand which product it relates to and what was actually tested.

COA vs Product Specification

A Product Specification describes the product itself.

It may include:

• Product name
• Ingredients
• Country or region of origin
• Harvest information
• Cultivar or blend
• Packaging
• Storage instructions
• Shelf life or best-before information
• Allergen information
• Intended application

In simple terms:

Product Specification = What is this product?

A COA provides analytical results for the sample or batch covered by the report.

COA = What was tested, and what were the results?

For a commercial buyer, both can be useful.

4 Things to Check on a Matcha COA

1. Product and Batch Identification

First, confirm that the document relates to the product you are actually purchasing.

Look for information such as:

• Product name or code
• Lot or batch number
• Sample identification

A COA for one matcha should not automatically be assumed to apply to every grade sold by the same supplier.

Batch identification is particularly important for manufacturers, distributors and larger businesses that require traceability.

2. Date and Issuer

Check when the analysis was completed and who issued the document.

Testing may be carried out by a producer, an internal quality-control team or an external laboratory.

The important point is to understand where the information comes from and what the document represents.

3. Tests Performed

Do not assume that terms such as “lab tested” mean that every possible test has been completed.

For example, a report containing microbiological results may not necessarily contain pesticide or heavy-metal testing.

If your business has specific technical requirements, tell the supplier exactly what information you need.

4. Results and Units

Check:

• Parameter tested
• Result
• Unit
• Test method, where provided
• Specification or reference limit, where provided

For larger food businesses, your technical or quality-assurance team may need to review this information before approving the product.

What Should You Check on a Product Specification?

A clear specification can be particularly useful when comparing several matcha products.

Origin, Harvest and Blend

“Japanese matcha” alone does not fully describe a commercial product.

Depending on the matcha, useful information may include:

• Growing region
• Harvest composition
• Cultivar or blend
• Intended application

These characteristics can affect bitterness, sweetness, umami, colour and how the matcha performs in milk or food.

You can compare AU MATCHA wholesale matcha grades and applications.

Packaging and Storage

Check:

• Pack size
• Packaging format
• Storage instructions
• Shelf life or best-before information

The appropriate pack size should also match how quickly your business uses matcha.

Batch Consistency

For cafés and manufacturers using the same recipe repeatedly, consistency matters.

Ask whether important characteristics such as origin, cultivar or blend may change between batches and how the supplier communicates significant changes.

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COA and Certification Are Not the Same Thing

A COA and a certification serve different purposes.

COA: reports analytical results.

Certification: indicates that a product, producer, facility or process meets the requirements of a particular certification scheme.

Examples may include:

• Organic certification
• Food-safety certification
• Halal certification
• Kosher certification

A certification shown by a supplier does not necessarily apply to every product they sell.

Always confirm:

“Does this certification apply to the exact matcha I am ordering?”

This is especially important when a certification is required for your finished product, retail customer or manufacturing process.

What Documentation Does a Café Need?

For most cafés, useful information may include:

• Origin and harvest
• Ingredients
• Intended application
• Storage instructions
• Product specification
• Available batch or quality information
• Samples for recipe testing

A COA cannot tell you whether a matcha tastes good in your oat-milk latte.

Likewise, an attractive sample cannot tell you everything about traceability, batch consistency or documentation.

Both product performance and supplier information matter.

For the wider supplier-selection process, read how to choose a wholesale matcha supplier in Australia.

The existing AU MATCHA supplier guide already recommends checking specifications, batch information, quality-control documentation, storage and Australian stock when evaluating a supplier.

What Documentation Does a Food Manufacturer Need?

Manufacturers may require more detailed information because matcha becomes an ingredient in another commercial product.

Depending on the application, requirements may include:

• Full product specification
• Ingredient and allergen information
• Country of origin
• Batch identification
• Microbiological information
• Relevant contaminant testing
• Shelf life and storage
• Required certifications
• COA

There is no single documentation package that is suitable for every manufacturer.

A bakery, beverage producer and dessert manufacturer may have different requirements.

The best approach is to send your technical requirements to the supplier before approving samples or placing a large order.

What Documentation Does AU MATCHA Provide?

For applicable products, AU MATCHA can provide:

• Product specifications
• Batch information
• Certificates of Analysis

Available documentation varies according to the product, producer and production batch.

When contacting AU MATCHA, include:

• Business type
• Intended application
• Expected monthly volume
• Product or grade required
• Required certifications
• Specific testing or technical documents needed

This makes it easier to identify suitable products before sending samples or preparing a commercial quotation.

If price is also part of your supplier comparison, see our guide to wholesale matcha price, cost per serve and MOQ in Australia.

Frequently Asked Questions

Is a COA the same as a product specification?

No. A product specification describes the product and its characteristics, while a COA reports analytical results relating to the product, sample or batch identified on the report.

Does a COA prove that matcha is high quality?

Not by itself.

A commercial buyer should also consider flavour, colour, required dose, batch consistency, storage, supplier reliability and suitability for the intended application.

Does AU MATCHA provide COAs?

Product specifications, batch information and COAs are available for applicable products on request. Availability varies by product, producer and production batch.

Request Matcha Specifications, Samples and Wholesale Pricing

When sourcing wholesale matcha, do not rely only on terms such as premium, ceremonial or Japanese matcha.

Confirm what product you are buying, what documentation is available and whether it meets the requirements of your business.

Need samples, product specifications, COA information or wholesale pricing?

Request wholesale matcha pricing, samples and product information