A stainless steel divided plate stamped "BPA-free" and "food grade" sells for USD 2.50–8.00 at wholesale. A plate that actually holds FDA, LFGB, and DGCCRF certifications from accredited labs — with a traceable mill test certificate — costs USD 1.80–4.50 factory-direct. The price overlap tells you something: many "food grade" claims on the market are unverified labels, not tested compliance. The difference is documentation, not metal.
This guide is for kitchenware brand owners, Amazon/e-commerce sellers, school and hospital procurement managers, foodservice distributors, and promotional product buyers who need to verify — not assume — that their stainless steel divided plates meet food-contact safety standards.
1. BPA-Free by Nature: Why Stainless Steel Does Not Contain BPA
BPA (bisphenol A) is a chemical used in polycarbonate plastics and epoxy resins. It has no role in stainless steel manufacturing. A stainless steel divided plate — an alloy of iron, chromium, and nickel — is inherently BPA-free without any reformulation or substitution.
| Material | Contains BPA? | Chemical Leaching Risk | Heat Stability |
|---|
| SUS304 Stainless Steel | No — not in composition | Negligible (Cr/Ni within safe limits) | Stable to 300 °C+ |
| Polycarbonate Plastic | Yes — BPA is a raw material | High (especially with heat and acidic foods) | Degrades above 100 °C |
| Melamine | No BPA, but releases formaldehyde | Moderate (formaldehyde + melamine migration) | Unsafe above 70 °C |
| "BPA-Free" Plastic | No BPA, may contain BPS/BPF substitutes | Unknown — substitutes are under-studied | Varies by formulation |
Key point: Stainless steel is not "BPA-free" in the way plastics use the term — it never contained BPA to begin with. There is no reformulation, no substitute chemical, and no reliance on voluntary labeling. The material composition is verifiable through mill test certificates.
2. What "Food Grade" Actually Means: Certifications Explained
"Food grade" means a product has been tested for metal migration — the amount of chromium, nickel, manganese, and other elements that transfer from the plate into food under controlled conditions. Different markets set different thresholds.
| Certification | Market | What It Tests | Strictness |
|---|
| FDA 21 CFR | United States | Cr, Ni, Mn migration into food simulants (acetic acid, water, oil) | Baseline standard |
| EU 1935/2004 + CE | European Union | Overall migration limit (10 mg/dm2) + specific metal release limits | Strict — especially for Ni |
| LFGB S30-31 | Germany | Stricter Ni release limits + organoleptic testing (taste/odor transfer) | Most strict in EU |
| DGCCRF | France | French-specific migration testing + labeling requirements | Strict — separate from EU framework |
A product that passes FDA does not automatically pass LFGB. If you distribute in multiple markets, you need test reports for each. A single "food grade" claim without specifying which standard is meaningless — always ask for the actual test report number and issuing lab.
3. Red Flags: How to Spot Non-Food-Grade Steel
Not every stainless steel product on the market meets food-contact standards. Low-cost divided plates sometimes use grades with excessive manganese, recycled steel with unknown composition, or surface coatings not tested for food contact.
| Red Flag | What It Means | Risk Level |
|---|
| No grade stamped on product | Manufacturer avoids traceability — could be 201, 202, or unknown alloy | High |
| "Stainless steel" with no grade number | Could be any grade, including those not rated for food contact | High |
| Magnetic response | May indicate 201 grade (higher Mn) or ferritic steel — worth investigating | Medium |
| Rust spots after short use | Chromium content likely below 16% — passive oxide layer is insufficient | High |
| Metallic taste or odor | Metal migration exceeds safe thresholds — would fail LFGB organoleptic test | High |
| Price significantly below market average | SUS304 has a floor cost driven by nickel prices — if too cheap, grade may be lower | Medium |
4. How to Verify Material Grade
If you already own plates or are evaluating samples, these methods range from quick field checks to definitive lab analysis:
| Method | How It Works | Accuracy |
|---|
| XRF Handheld Analyzer | X-ray fluorescence reads exact alloy percentages in seconds | Definitive |
| Nickel Drop Test | Chemical reagent changes color based on nickel content | Semi-quantitative — can distinguish 304 from 201 |
| Magnet Test | 304 is generally non-magnetic; 201 may attract a magnet | Rough indicator only — cold-worked 304 can show slight magnetism |
| Mill Test Certificate | Lab report from steel mill tracing exact chemical composition to a specific coil | Definitive (when sourcing) |
5. Certification Checklist for Bulk Buyers
When evaluating a supplier for stainless steel divided plates at volume, request these documents before placing an order. A credible manufacturer will have them ready.
Mill Test Certificate (MTC 3.1): Proves steel grade and chemical composition. Check: Cr ≥ 18%, Ni ≥ 8% for 304. Heat number must match the coil.
FDA Test Report: Confirms US food-contact compliance. Must be issued by an accredited lab (SGS, Intertek, TUV).
EU 1935/2004 Declaration: Legal requirement for EU market. Must reference the specific product SKU, not a generic statement.
LFGB Test Report: Required for Germany. Check Ni release ≤ 0.14 mg/kg threshold + organoleptic pass.
DGCCRF Report: Required for France. Separate migration testing regime + French-language labeling requirements.
Factory Audit Report: BSCI, ISO 9001, or equivalent. Check audit date is current (within 12 months).
If a supplier says "our products are food grade" but cannot produce a specific test report from an accredited laboratory — walk away. Verbal assurances and generic certificates that do not reference your product category are not sufficient for regulatory compliance or liability protection.
6. Made in USA vs Made in China: Does Origin Matter for Safety?
Country of origin alone does not determine product safety. What matters is the steel grade, the testing regime, and the supplier's transparency.
| Factor | Made in USA | Made in China (Certified) | Made in China (Uncertified) |
|---|
| Steel Grade Traceability | Standard practice | Available on request (MTC provided) | Often unavailable |
| Food-Contact Certification | FDA compliance assumed | FDA + EU + LFGB + DGCCRF available | May lack any certification |
| Third-Party Audits | Common for large brands | SGS, TUV, Bureau Veritas available | Rarely conducted |
| Price Point | Higher (labor + overhead) | Competitive (scale manufacturing) | Lowest (often at the expense of material quality) |
| Product Range | Limited SKU options | Wide range with OEM customization | Generic designs, no customization |
Instead of asking "Where was it made?" ask: "Can you provide a mill test certificate, an accredited food-contact test report, and a third-party factory audit?" A Chinese manufacturer that holds CE, FDA, LFGB, and DGCCRF certifications from recognized labs has demonstrated a higher standard of compliance than an unaudited supplier in any country.
Frequently Asked Questions
Q: Is all stainless steel food grade?
No. Only certain grades — primarily 304 (18/8) and 316 — are considered food-safe by major regulatory bodies. Grades like 201 and 202 have higher manganese content and may not pass strict EU migration tests, especially with acidic foods.
Q: What is 18/8 stainless steel?
18/8 refers to the approximate composition: 18% chromium and 8% nickel. This is SUS304 — the most widely used food-grade stainless steel. Chromium creates the corrosion-resistant oxide layer; nickel stabilizes the crystal structure and improves acid resistance.
Q: Can stainless steel leach into food?
All metals release trace amounts of ions into food. With SUS304, migration levels for chromium and nickel fall within FDA and EU limits under normal use. Prolonged cooking of highly acidic foods (vinegar, tomato sauce) in damaged or low-grade steel can increase migration.
Q: Is "food grade" a regulated term?
Not universally. In the US, it generally means FDA 21 CFR compliance. In the EU, it means passing EU 1935/2004 migration testing. There is no single global standard — always ask for the specific certification, not just the label.
Q: Does surface finish affect food safety?
Smoother finishes (#4 satin or mirror) have fewer micro-pits where bacteria can harbor. For HACCP-compliant operations, #4 satin is the standard — it balances cleanability with durability.
Najor Stainless Steel Divided Plates: MOQ 200 pcs, Factory-Direct
Material: SUS304 (18/8) — FDA, LFGB, DGCCRF, CE certified
Range: Round, rectangular, square, oval divided plates — 3 to 7 compartments, 20cm to 40cm
Customization: Compartment layout, PVD color coating, laser logo engraving, custom packaging
MOQ: 200 pcs (stock) / 1,000 pcs (logo) / 5,000 pcs (OEM)
Lead time: Sample 7 days / Production 25–30 workdays
Capacity: 500,000+ divided plates per month