Quality Assurance & AQL 2.5 Inspection Standards (The Quality)
At Polos Inc, sustainable quality is far more than a marketing slogan—it is a non-negotiable manufacturing discipline. Operating under internationally recognized Acceptance Quality Limit (AQL) 2.5 protocols and Statistical Quality Control (SQC), we ensure zero-defect consistency across raw yarn knitting, soft-flow dyeing, computerized embroidery, and final assembly.
Strict International Export Standard
Guaranteed Post-Wash Shrinkage Limit
ISO 105-C06 Washing Fastness Tested
Lock Metal Detector Conveyor Screening
1. 4-Point Raw Fabric Inspection (ASTM D5430)
Every knitted fabric roll is inspected on continuous backlit inspection frames before cutting. Defects like yarn knots, slubs, drop stitches, and color banding (barre) are scored using the ASTM 4-point system; rolls scoring over 20 points per 100 square yards are strictly rejected.
2. Colorfastness & Spectrophotometer Lab Testing
We test every dye lot for color consistency using computerized spectrophotometers (Delta E < 0.5 against corporate Pantone swatches). Fabrics undergo ISO 105-C06 wash fastness, perspiration fastness, and crocking tests to ensure colors never bleed onto whites.
3. Dimensional Shrinkage & Torque Control
We perform 3-cycle laundering shrinkage tests on every fabric batch. Using mechanical stenter frames and compacting rollers, we control residual shrinkage within 3% in length and width, while preventing garment spirality (twisting side seams).
4. Metal Detector Needle Scanning & Seam Strength
Safety is paramount: 100% of finished garments pass through high-sensitivity conveyor metal detectors to ensure no broken needle fragments remain. Seams undergo calibrated pull-force tensile testing to guarantee 50+ industrial laundry cycles.
AQL 2.5 Sampling Benchmark Plan (ISO 2859-1)
How our certified quality control inspectors sample and verify bulk apparel production orders:
| Batch Size (Total Pcs) | Inspected Sample Size | Critical Defects Allowed | Major Defects Allowed (AQL 2.5) | Minor Defects Allowed (AQL 4.0) |
|---|---|---|---|---|
| 151 – 500 Pcs | 50 Garments | 0 (Zero Tolerance) | 3 Pieces | 5 Pieces |
| 501 – 1,200 Pcs | 80 Garments | 0 (Zero Tolerance) | 5 Pieces | 7 Pieces |
| 1,201 – 3,200 Pcs | 125 Garments | 0 (Zero Tolerance) | 7 Pieces | 10 Pieces |
| 3,201 – 10,000 Pcs | 200 Garments | 0 (Zero Tolerance) | 10 Pieces | 14 Pieces |
| 10,001 – 35,000 Pcs | 315 Garments | 0 (Zero Tolerance) | 14 Pieces | 21 Pieces |
Frequently Asked Questions — Quality Control Standards
What is the difference between AQL 2.5 and 100% inspection?
AQL 2.5 is the internationally accepted statistical sampling standard used by global retailers to certify entire shipments. At Polos Inc, we perform 100% visual inspection on every single garment during trimming and pressing, followed by an independent AQL 2.5 audit prior to sealing cartons.
How do you prevent polo shirts from shrinking after customer washing?
We use tubular compacting and continuous heat-setting during fabric finishing to lock cotton fibers into their natural relaxed state, guaranteeing less than 3% post-wash dimensional change.
Do you provide formal Certificate of Analysis (CoA) or lab test reports?
Yes. For corporate procurement contracts and export shipments, we supply formal internal and third-party laboratory test certificates covering GSM, color fastness, shrinkage, and pilling resistance.
What happens if a defect is detected during final inspection?
If any critical defect or excessive major defects are found in a sample lot, the entire production batch is quarantined, returned to the line for 100% sorting, and re-audited from scratch before release.
Procure Defect-Free Apparel With Confidence
Experience uncompromised quality governance backed by AQL 2.5 standards. Connect directly with Founder & MD Sundar Thulasiraman today.