Standards explained

Formaldehyde Standards for Bathroom Furniture

Formaldehyde emission class is one line on a specification and one of the few that can stop a shipment at a border. The confusion comes from three different systems being quoted interchangeably: a Chinese board grade, a European class, and a North American regulation. They are not equivalent, and knowing which one your market actually enforces is the difference between a compliant order and an expensive one.

The short answer

Quick Reference

E0 and E1 are board grades; CARB Phase 2 and TSCA Title VI are regulations.
North America enforces TSCA Title VI, which incorporates the CARB Phase 2 limits.
Compliance attaches to the panel and its certification chain, not to the finished cabinet.
Solid wood is outside the composite panel rules, but panel components in the same cabinet are not.
Ask for the panel certificate and the panel mill's certification number, not a factory letter.

A worker feeding a sheet panel into a machine in the workshop

Start here

Grades and Regulations Are Different Things

Most of the confusion in this area is a category error. E0 and E1 describe how much formaldehyde a panel emits, measured to a test method. They are grades. CARB Phase 2 and TSCA Title VI are legal instruments that set limits and, crucially, also set out how compliance must be certified, labeled and documented.

A supplier can truthfully say a panel is E0 and still be unable to sell it into the United States, because meeting a number is not the same as being certified by an accredited third-party certifier under a regulation that requires one.

For bathroom furniture, this matters because vanities almost always contain panel products somewhere, even when the visible parts are solid wood.

E0 / E1: emission grades measured to a test method
CARB Phase 2: a Californian regulation with limits and a certification regime
TSCA Title VI: the federal United States rule, aligned to the CARB limits
EU: managed through EN standards and the general chemicals framework
Meeting a number is not the same as being certified under a regulation

What Each System Is

A bathing area with a mirror cabinet and shower fittings

Four things get quoted, and it helps to know what each one actually is before comparing them.

Term	What it is	Where it matters
E1	An emission grade for wood-based panels	Widely quoted internationally
E0	A stricter grade than E1, in common trade use	Quoted by Asian panel suppliers
CARB Phase 2	A Californian regulation with limits and certification	California, and as the basis for the federal rule
TSCA Title VI	The federal United States regulation	All of the United States
EN standards	European test methods and classification	European Union

The practical point is that the North American system is not just a limit. It requires panels to be certified by an accredited third-party certifier, records to be kept, and finished goods to carry a compliance statement. A supplier who quotes only a number has answered half the question.

What North America Actually Requires

A worker pressing veneer onto a panel by hand

If you are importing bathroom furniture into the United States, the composite wood panels in it fall under TSCA Title VI. The obligations sit on the importer, and they are documentary as much as technical.

In practice that means three things. The panels used must be certified compliant by an accredited third-party certifier. The finished goods must carry a compliance label or statement. And records must be kept that connect the panels in your goods to that certification.

The failure mode is specific and common: a factory buys certified panel for one order and uncertified panel for the next, and nothing in the finished cabinet reveals the difference. This is why the useful request is the panel certificate and the panel mill's certification number for your production run, rather than a general letter from the furniture factory.

Panels must be certified by an accredited third-party certifier
Finished goods must carry a compliance statement
Records must link your goods to certified panel
Ask for the panel mill certification number, not a factory letter
The obligation sits with the importer, not only the manufacturer

What Is Covered and What Is Not

A worker measuring a packed carton with a tape measure in the warehouse

Solid wood is not a composite panel and is outside these rules. That fact is often used loosely: a vanity described as solid wood will still typically have plywood or MDF somewhere, in the back panel, the drawer bottoms, or the carcass. Those components are in scope even if the doors are not.

The correct question is therefore not "is this cabinet solid wood" but "which components are composite panel, and what is their certification". A component list makes this straightforward; without one it is guesswork.

Finishes are a separate matter. Some coatings and adhesives contribute formaldehyde independently of the panel, which is one of the practical arguments for water-based finish systems in furniture destined for regulated markets.

Solid wood is outside the composite panel rules
Back panels, drawer bottoms and carcasses are usually panel products
Ask which components are panel and what each is certified to
Adhesives and coatings can contribute independently
A component list turns this from guesswork into a checkable question

Common questions

Formaldehyde Standard Questions

Is E0 the same as CARB Phase 2?

No. E0 is an emission grade; CARB Phase 2 is a regulation that sets limits and also requires third-party certification, labeling and record keeping. A panel can meet an E0 number without being certified under the regulation.

What applies when importing bathroom furniture into the United States?

TSCA Title VI applies to the composite wood panels in the goods. Panels must be certified by an accredited third-party certifier, finished goods must carry a compliance statement, and records must connect your goods to that certification.

Does a solid wood vanity need formaldehyde certification?

Solid wood itself is outside the composite panel rules, but almost every vanity contains panel components such as back panels, drawer bottoms or carcass parts. Those are in scope, so ask which components are panel.

Who is responsible, the factory or the importer?

Both have roles, but the importer carries the legal obligation in the destination market. That is why the documentation should be requested at order stage, when it can still relate to the material actually used.

What document should I ask for?

The panel certificate and the panel mill's third-party certification number for the material used in your production run, plus a component list showing which parts are panel. A general letter from the furniture factory is much weaker evidence.

Does the finish affect formaldehyde emissions?

It can. Some coatings and adhesives contribute independently of the panel, which is one practical reason to specify water-based finish systems for goods destined for regulated markets.

In short

Certification, Not Just a Number

E0 and E1 are grades. CARB Phase 2 and TSCA Title VI are regulations that require certified panel, labeled goods and traceable records. Quoting a grade answers half the question, and it is the half that will not satisfy a customs officer.

Ask which components are composite panel, ask for the panel mill's certification number for your run, and get it at order stage rather than before shipping, because by then the material is already inside the cabinet.

Grades measure; regulations also require certification and records
TSCA Title VI governs composite panels entering the United States
Solid wood is outside it; panel components in the same cabinet are not
Ask for panel certificates and mill certification numbers
Request documentation at order stage, not before shipping

Importing into a regulated market?

Talk to WNS Global

Tell us the destination and we will state which components in the cabinets are composite panel and what documentation can be provided for the material used in your production run. We would rather agree that at order stage than discover it at shipment.