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Classificação de defeitos Críticos, Maiores e Menores em 24 setores industriais.
Código de amostragem ISO 2859-1 e ANSI/ASQ Z1.4 com limites de aceitação Ac/Re.
Determine de forma estatisticamente comprovada o tamanho das amostras, letras de código e limites máximos de defeitos críticos, maiores e menores para o seu lote.
Informe o produto. Nosso modelo de engenharia de qualidade formulará um protocolo de inspeção vinculante com ensaios específicos e matrizes de tolerância.
ISO 2859-1 (Plano de Amostragem Simples Normal, Nível Geral II):
| Lot Size | Code | Sample | Maj (2.5) | Min (4.0) |
|---|---|---|---|---|
| 91 - 150 | F | 20 | Ac:1 / Re:2 | Ac:2 / Re:3 |
| 151 - 280 | G | 32 | Ac:2 / Re:3 | Ac:3 / Re:4 |
| 281 - 500 | H | 50 | Ac:3 / Re:4 | Ac:5 / Re:6 |
| 501 - 1,200 | J | 80 | Ac:5 / Re:6 | Ac:7 / Re:8 |
| 1,201 - 3,200 | K | 125 | Ac:7 / Re:8 | Ac:10 / Re:11 |
| 3,201 - 10,000 | L | 200 | Ac:10 / Re:11 | Ac:14 / Re:15 |
| 10,001 - 35,000 | M | 315 | Ac:14 / Re:15 | Ac:21 / Re:22 |
| 35,001 - 150,000 | N | 500 | Ac:21 / Re:22 | Ac:21 / Re:22 |
Risco de segurança, choque elétrico, rebarbas cortantes ou asfixia. 1 único defeito invalida a remessa.
Defeitos que prejudicam o funcionamento, montagem ou leitura do código de barras em centros de distribuição.
Pequenos riscos superficiais ou nuances que não impedem o uso normal do produto.
Don't rely only on generic numbers. Enter your exact product below. Our AI engine correlates your order volume (3,000 units) with international standards (ASTM, FDA, LFGB, EN71, CE) to generate on-site stress tests, defect classification matrices, factory risk advisories, and generates a permanent, shareable QC protocol dossier.
Limites pré-calculados para Nível II nas faixas mais habituais de compra e contêineres.
Matriz completa de consulta para Níveis I, II e III com limites de aceitação (Ac) e rejeição (Re).
| Batch Size (Units) | Level I | Level II (Standard) | Level III | Sample Size (n) | AQL 1.5 (Ac / Re) | AQL 2.5 (Major) | AQL 4.0 (Minor) |
|---|---|---|---|---|---|---|---|
| 2 to 8 | A | A | B | 2 | Ac:0 / Re:1 | Ac:0 / Re:1 | Ac:0 / Re:1 |
| 9 to 15 | A | B | C | 3 | Ac:0 / Re:1 | Ac:0 / Re:1 | Ac:0 / Re:1 |
| 16 to 25 | B | C | D | 5 | Ac:0 / Re:1 | Ac:0 / Re:1 | Ac:0 / Re:1 |
| 26 to 50 | C | D | E | 8 | Ac:0 / Re:1 | Ac:0 / Re:1 | Ac:1 / Re:2 |
| 51 to 90 | C | E | F | 13 | Ac:0 / Re:1 | Ac:1 / Re:2 | Ac:1 / Re:2 |
| 91 to 150 | D | F | G | 20 | Ac:1 / Re:2 | Ac:1 / Re:2 | Ac:2 / Re:3 |
| 151 to 280 | E | G | H | 32 | Ac:1 / Re:2 | Ac:2 / Re:3 | Ac:3 / Re:4 |
| 281 to 500 | F | H | J | 50 | Ac:2 / Re:3 | Ac:3 / Re:4 | Ac:5 / Re:6 |
| 501 to 1,200 | G | J | K | 80 | Ac:3 / Re:4 | Ac:5 / Re:6 | Ac:7 / Re:8 |
| 1,201 to 3,200 | H | K | L | 125 | Ac:5 / Re:6 | Ac:7 / Re:8 | Ac:10 / Re:11 |
| 3,201 to 10,000 | J | L | M | 200 | Ac:7 / Re:8 | Ac:10 / Re:11 | Ac:14 / Re:15 |
| 10,001 to 35,000 | K | M | N | 315 | Ac:10 / Re:11 | Ac:14 / Re:15 | Ac:21 / Re:22 |
| 35,001 to 150,000 | L | N | P | 500 | Ac:14 / Re:15 | Ac:21 / Re:22 | Ac:21 / Re:22 |
| 150,001 to 500,000 | M | P | Q | 800 | Ac:21 / Re:22 | Ac:21 / Re:22 | Ac:21 / Re:22 |
| 500,001 & over | N | Q | R | 1,250 | Ac:21 / Re:22 | Ac:21 / Re:22 | Ac:21 / Re:22 |
Exemplos práticos de classificação pericial aplicados nos maiores polos exportadores da China.
Esclarecimentos indispensáveis para blindar suas compras e auditar fábricas com autoridade.
AQL (Acceptance Quality Limit) is defined by ISO 2859-1 and ANSI/ASQ Z1.4 as the maximum percentage of defective units considered satisfactory as a process average. Instead of examining 100% of an order, certified quality inspectors pull a statistically valid random sample based on batch size to determine whether the entire shipment should be accepted or rejected.
AQL 2.5 is the standard threshold for Major defects adopted by global retailers and Amazon FBA sellers. For instance, in an order of 3,000 units inspected under General Level II (Sample Code Letter K, 125 units sampled), the batch passes if 7 or fewer major defects are found (Ac:7), and fails if 8 or more are detected (Re:8).
Critical defects (AQL 0.0) involve safety, fire, or regulatory hazards (e.g. sharp burrs, toxic chemicals, electrical leakage); even 1 critical unit results in instant batch rejection. Major defects (AQL 2.5) impair product functionality, structural integrity, or barcode scannability. Minor defects (AQL 4.0) represent cosmetic imperfections that do not diminish operational usability.
General Inspection Level II is the universal benchmark for over 90% of commercial consumer goods. Level I uses a reduced sample size (approx. 40% of Level II) recommended for trusted, long-term suppliers. Level III pulls a tightened sample (approx. 160% of Level II) suitable for high-value electronics, luxury merchandise, or factories with prior quality disputes.
If an inspection fails, the buyer holds the final wire balance payment (typically 70%). The factory manager signs the on-site inspection report, acknowledging the defect count. The supplier must unbox the inventory, conduct 100% sorting and rework, and schedule a re-inspection. Under standard procurement agreements, the supplier pays the re-inspection fee.
Under General Level II, 5,000 units fall into the 3,201 - 10,000 range (Sample Code Letter L). Exactly 200 units must be randomly pulled from master cartons. Limits are: 0 Critical, maximum 10 Major, and maximum 14 Minor defects allowed before batch rejection.