Corrugated Box & Paperboard Testing

Check that the boxes you buy match the specification you pay for, and that they hold up when stacked in humid warehouses.

4.9/5Rated by 28 clients

How Corrugated Box & Paperboard Testing works

1Assessment of requirement
2Sample collection
3Right lab assigned
4Testing
5Test report

Each step explained

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Overview of Corrugated Box & Paperboard Testing

Tested by: NABL-accredited partner lab
Regulation: IS 2771 & ISO/TAPPI methods
Typical turnaround: 3–5 working days
Sample needed: 5–10 boxes or board sheets

Corrugated boxes are bought on specification: number of plies, paper grammage (GSM), bursting strength and box compression strength. IS 2771 covers corrugated fibreboard boxes, and buyers usually add their own requirements. Because box makers can substitute lower-grade or recycled kraft, regular testing protects buyers from paying for strength they do not get.

Edge crush (ECT) and box compression (BCT) predict how high boxes can be stacked, while the Cobb test measures water absorption, which matters in India’s monsoon when humidity can cut box strength sharply. Testing of the packed product as a whole is done through ISTA transit testing.

What we do for you

Lab and parameter list chosen for your purpose: licence, export, buyer or internal QC
Sampling guidance, and pickup or on-site sampling where needed
One contact who follows up with the lab until the report is issued
Report explained in plain language, with next steps if a result fails

What to send

The lab confirms the exact quantity and packing for your product when we book the test.

Sample

Quantity: 5–10 boxes or board sheets
Sealed and labelled with the product name, batch number and date
Packed securely so that it is not damaged in transit

Details to share

Product name, material or grade and intended use
Drawings or specifications, where relevant
The standard or buyer specification to test against
Markets where the product will be sold

How we handle Corrugated Box & Paperboard Testing

1
Assessment of requirement
We confirm the standard, the list of tests and how many samples your product needs.
2
Sample collection
We collect the samples from your factory or warehouse, or tell you exactly where to send them.
3
Right lab assigned
We choose an accredited lab (NABL, BIS-recognised or ILAC) that covers your standard and can start soonest.
4
Testing
The lab tests your samples against the standard. We follow up and tell you at once if a test fails.
5
Test report
You receive the signed test report, ready to use for BIS, WPC, CE or your buyer.

What the lab tests

Parameter	Why it is checked
Bursting strength	Resistance to puncture and rupture
Edge crush (ECT)	Board stacking strength
Box compression (BCT)	Load a box carries before collapse
Cobb water absorption	Performance in humid conditions
Grammage, ply and flute	Construction against the specification
Moisture content	Board condition on delivery

The final list depends on your product, its standard and the purpose of testing. We confirm it with you before the sample goes to the lab.

Frequently asked questions

Is bursting strength enough to specify a box?

Not for stacking. Bursting strength reflects puncture resistance, but stacking performance depends on edge crush and box compression. Many buyers now specify ECT or BCT as well.

Which standard is the product tested against?

The Indian Standard, international standard or buyer specification that applies to your product and market. We confirm it with you before testing, and the report states the method used for each parameter.

Who carries out the testing?

Instacertify’s partner laboratories, accredited by NABL to ISO/IEC 17025 for the parameters on your report. We choose the lab, arrange the sample, follow up until the report is issued and explain the results to you.

What our clients say

“Instacertify helped us get BIS CRS certification for our entire product range within just 6 weeks. Their team handled everything from documentation to lab coordination. Highly professional service.”

Akash GuptaBIS CRS · Electronics brand

“They handled complete certification for us, from ISO 9001 to BIS for PVC cables and plugs. Thorough, professional and always available — they knew what needed to be done and when.”

Shivank VishnoiISO 9001 & BIS · Cables

“Getting TEC approvals for our access-control products seemed confusing and complex, but Instacertify made it simple.”

Jiten ShahTEC approval · Access control

Not sure which certification you need?

Send us the product name and the countries you sell in. A specialist replies with the standards that apply, the documents to prepare, the lab cost and the timeline. The assessment is free.

The list of approvals comes to you in writing
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