adr limited quantity calculator

What this ADR limited quantity calculator helps you check

The ADR Limited Quantity regime can simplify dangerous goods transport when strict packing limits are respected. In practice, teams often need quick answers to questions like:

• Does each inner packaging stay within the allowed LQ amount?
• Is each completed outer package under the applicable gross mass limit?
• At shipment scale, could transport-unit LQ marking be triggered?

This page is designed to make those checks fast and consistent before dispatch.

Key ADR LQ ideas in plain language

1) Inner packaging limit (Column 7a)

For each UN entry, ADR assigns an LQ value. That value is the maximum quantity allowed per inner packaging for the Limited Quantity route. If your actual amount per inner packaging exceeds the listed amount, that product configuration does not qualify as LQ.

2) Outer package gross mass cap

Under typical LQ rules, completed packages have a gross mass cap:

• 30 kg for most combination packagings (such as boxes/cartons).
• 20 kg for trays wrapped in shrink or stretch film.

The calculator estimates gross mass by combining product mass and packaging tare.

3) High shipment mass and vehicle marking

Large consignments of LQ goods may require additional marking at transport-unit level. A common operational threshold used in planning is whether total gross mass of LQ packages exceeds 8,000 kg for applicable units. The calculator flags this so you can review vehicle marking requirements before loading.

How to use the calculator

1. Enter the allowed LQ value from ADR Column 7a for your product.
2. Enter what is actually packed in each inner packaging.
3. Select whether that quantity is expressed in liters or kilograms.
4. If using liters, provide density (kg/L) so mass can be estimated correctly.
5. Enter inners per outer, packaging type, tare, and package count.
6. Click Calculate and review pass/fail outputs.

Worked example

Imagine a paint product with an LQ value of 1 L per inner packaging. You pack 0.75 L cans, 12 cans per carton, with 0.8 kg carton tare, and 300 cartons total:

• Inner check: 0.75 L ≤ 1.00 L (pass)
• Net product mass per carton (assuming density 1.05 kg/L): 0.75 × 12 × 1.05 = 9.45 kg
• Gross per carton: 9.45 + 0.8 = 10.25 kg (pass vs 30 kg box limit)
• Total shipment gross: 10.25 × 300 = 3,075 kg

Result: packaging can fit the basic LQ quantity/mass logic and stays below the 8,000 kg planning threshold.

Common mistakes this tool helps prevent

• Using the wrong unit (liters vs kilograms) when checking inner limits.
• Ignoring packaging tare and accidentally breaching gross package caps.
• Assuming small packages always mean no transport-unit marking duties.
• Applying one product's LQ value to a different UN entry.

Practical warehouse checklist

Before packing

• Confirm UN number and ADR classification data.
• Verify LQ value in current ADR tables.
• Validate packaging specification and closure method.

During packing

• Sample-check fill volumes/weights per inner packaging.
• Weigh completed outers to ensure mass compliance.
• Apply required LQ package marks clearly and durably.

Before dispatch

• Total all LQ package gross masses for the load.
• Review whether transport-unit marking is needed.
• Keep instructions and records aligned with carrier requirements.

Final note

This ADR Limited Quantity calculator is best used as a pre-check tool for planners, packers, and compliance teams. It speeds up repetitive math and highlights risk points early. For final compliance decisions, always use the current ADR legal text and your organization's dangerous goods specialist review process.