Jul 28, 2026Quality Inspection Guides
Can You Choose Your Own Inspection Sampling Quantity?
Learn whether you can ask inspectors to check more pieces than the standard AQL sample size, when it makes sense, and how to decide the right inspection quantity for your shipment.
After learning how AQL determines inspection quantity, you may still have another practical question: can you ask the inspector to check more pieces than the standard sample size?
Yes, you can.
AQL gives a recognized method for deciding inspection quantity. It usually follows this logic:
Lot Size → Inspection Level → Code Letter → Sample Size → AQL Acceptance Criteria
This method is widely used because it gives you a consistent way to inspect a shipment without checking every unit. AQL Sampling Plan can help you understand the basic logic. But AQL is not a rule that prevents you from asking for additional samples. If your product risk, supplier situation, or customer requirements call for a larger sample size, the inspection plan can be adjusted before the inspection takes place.
AQL Gives You a Reference, Not a Limit
AQL sampling helps decide how many pieces should be randomly selected from your shipment. For example, if your order quantity is 8,000 pieces and General Inspection Level II is used, the sample size may be 200 pieces. The inspector checks those 200 pieces and compares the number of defects with the agreed AQL limits.
This gives your inspection a clear structure. It also avoids a situation where inspection quantity is decided casually on-site.
But AQL does not know the full background of your order. It does not know whether this is your first order with the supplier, whether the product is newly developed, whether the packaging has changed, or whether the previous shipment had mixed quality between cartons.
That is why AQL should be treated as the starting point. The final inspection plan should match the actual risk of your shipment.
When You May Want More Samples Checked
A larger sample size is most useful when you need a clearer picture of consistency.
If this is your first order with a new supplier, you may not yet know how stable their production is. The approved sample may be acceptable, but the first bulk order is where you start seeing how the factory controls workmanship, packing, labeling, and consistency across cartons.
For a new product, more sampling may also make sense. New materials, new construction, custom accessories, or unfamiliar assembly steps can create problems that were not obvious during sample approval. In this situation, you may already know which points need more attention, such as a handle connection, a printed logo, a zipper function, or a fitting tolerance.
Previous quality problems are another common reason to increase sampling. If your last shipment had missing accessories, wrong labels, mixed sizes, uneven workmanship, or defects concentrated in certain cartons, checking only the standard AQL quantity may not give you enough confidence for the next order.
High-value or high-risk products may also justify a stronger inspection plan. If one defective item creates a costly return, customer complaint, or safety concern, checking more samples can be a reasonable business decision.
From our experience, customers usually ask for additional sampling when they already know what they are worried about. That is the right approach. More samples are most valuable when they are connected to a specific risk.
AQL Sampling and Your Requested Sampling Quantity
AQL sampling and your requested sampling quantity are not opposite methods. They can work together.
| AQL Sampling | Your Requested Sampling |
|---|---|---|
Basis | Standard sampling method | Your product risk and business needs |
Sample size | Based on lot size and inspection level | Defined before inspection according to your request |
Purpose | Evaluate shipment quality consistently | Gain more confidence on specific risks |
Best use | Normal shipment inspection | New supplier, new product, previous defects, higher-risk goods |
For example, your shipment may require 200 pieces under the standard AQL sampling plan. If you are concerned about size labels, you may ask the inspector to check additional pieces for label accuracy. If you are worried about color shading, you may ask for more garments from different cartons and sizes to be compared side by side.
The important point is to confirm this before the inspection. If additional sampling is added to a Pre-Shipment Inspection, the inspection time and cost may need to be adjusted.
Does Checking More Pieces Always Mean Better Inspection?
Checking more pieces can give more information, but it does not automatically make the inspection better.
The value depends on what is being checked. If the main risk is visible workmanship, a larger sample size may help. If the concern is missing accessories, carton mixing, wrong labels, or uneven quality between cartons, additional sampling can also be useful.
But if the risk is product performance, checking more pieces visually may not solve the problem. For example, looking at 500 rain jackets does not replace a waterproof test. Checking more safety shoes by appearance does not prove sole bonding strength. Looking at more drinkware does not confirm thermal shock resistance.
In these cases, the inspection plan may need product-specific checks, selected samples, or independent laboratory testing. GD Inspection can select random samples or witness sampling during inspection. If formal testing is needed, samples can be sent to an independent laboratory through a proper testing arrangement.
More inspection quantity helps only when it matches the real quality risk.
Can You Request 100% Inspection?
Yes, in some situations you can request 100% inspection or sorting.
This is different from normal AQL sampling. AQL inspection uses representative samples to judge the shipment. A 100% inspection means every piece, or every piece within a defined scope, is checked for specific defects.
This may be useful after a failed inspection, after factory rework, during complaint investigation, or when one particular defect must be removed before shipment. For example, if a shipment had mixed size labels, the buyer may ask the factory to sort the goods and then arrange verification of the corrected cartons.
100% inspection usually requires more time, more labor, and clearer defect criteria. It should not be treated as a routine replacement for a normal pre-shipment inspection. It is more suitable when there is a known problem that needs to be separated, corrected, or confirmed.
How to Decide the Right Sampling Quantity
Before choosing a larger sample size, first define what you want to know from the inspection.
Ask yourself a few practical questions. Is this your first order with this supplier? Is the product customized? Have similar products had defects before? Is the issue easy to check visually, or does it require a function test? Are you trying to check general workmanship, or one specific risk?
If the concern is general shipment quality, the normal AQL sampling plan may be enough. If the concern is consistency across cartons, the inspector should select samples from different cartons. If the concern is one specific defect, the inspection plan should clearly state that point before the inspector arrives at the factory.
A good inspection plan is not always the largest one. It is the one that gives you enough information to make a shipment decision.
How GD Inspection Supports a Customized Inspection Plan
When arranging an inspection, you can tell GD Inspection if you want to follow the standard AQL sample size or increase the quantity for certain checks.
The inspection requirements can define which points need normal sampling and which points need additional verification. For example, standard AQL sampling may be used for workmanship, while extra samples may be checked for size labels, accessories, color consistency, barcode scanning, or packaging details.
For shipments that require selected samples, GD Inspection can support Sample Picking Service. If performance cannot be confirmed visually, Lab Testing Assistance Service may also be used with an independent laboratory.
This keeps the inspection practical. AQL remains the foundation, while additional sampling is used only where it gives real value.
Final Thought
AQL sampling provides a professional starting point for deciding how many pieces should be inspected. But your shipment may have risks that require more than the standard sample size.
The best inspection plan is not the smallest or the largest one. It is the one that gives you enough confidence before the goods leave China.