If you’re in the business of making corrugated boxes, paper, paperboard or flexible packaging, bursting strength is the one number that determines whether your product makes it through the supply chain. And the accuracy of that number is completely dependent on the instrument behind it. That’s why choosing the right bursting strength tester manufacturer isn’t a buying decision, it’s a quality assurance decision.
In this guide, we tell you how a bursting strength tester works, the standards it should meet, the specifications that make a good bursting strength tester from bad and why hundreds of packaging labs across India trust LabZenix as their bursting strength tester manufacturer.
Table of Contents
What Is a Bursting Strength Tester?
Materials Tested on a Bursting Strength Tester
Testing Standards a Manufacturer Must Comply With (IS 1060, ASTM D3786/D774, ISO 2758/2759, TAPPI)
Digital vs Analog Bursting Strength Testers: Which Should You Buy?
7 Key Specifications to Evaluate Before Choosing a Manufacturer
Why LabZenix Is a Trusted Bursting Strength Tester Manufacturer in India
Bursting Strength Tester Price in India
FAQ's
What Is a Bursting Strength Tester?
A bursting strength tester (also called a Mullen type tester or bursting strength testing machine) measures the maximum hydraulic pressure that a material can withstand before it ruptures. A circular specimen is mounted on an elastic rubber diaphragm and clamped. Hydraulic pressure is then applied at a controlled rate until the specimen bursts. Bursting Strength The maximum pressure of the material expressed in kg/cm2 or kPa.
The test answers a simple commercial question: will this box, paper or laminate make it through stacking, transit and handling without failing?
Materials tested in bursting strength tester
Corrugated boxes and corrugated board (3 ply, 5 ply, 7 ply)
Kraft paper and paperboards
solid fiber board and duplex board
Specialty paper and filter paper
Testing Standards a Bursting Strength Tester Manufacturer Must Comply With
Any serious bursting strength tester manufacturer in India must build instruments that conform to national and international test methods. The instrument you buy should be calibrated and certified against:
StandardScopeIS 1060 (Part 1)Methods of sampling and testing paper and allied products (India)
IS 1828Calibration of force/pressure proving instrumentsASTM D3786Bursting strength of textile fabrics — diaphragm method
ASTM D774 / D774MBursting strength of paperISO 2758
Paper — determination of bursting strengthISO 2759
Board — determination of bursting strengthTAPPI T403 / T810Bursting strength of paper / corrugated board
At LabZenix, every bursting strength tester is factory-calibrated against certified pressure standards and supplied with a calibration certificate traceable to NABL-accredited references, so your lab results hold up in customer audits and third-party inspections.
Digital vs Analog Bursting Strength Testers: Which Should You Buy?
As a bursting strength tester manufacturer, LabZenix offers both configurations. Here is how they compare:
FeatureDigital ModelAnalog ModelPressure displayDigital
LED/LCD with peak holdBourdon-type dial gaugeAccuracy±1% of reading±2% of full scalePeak value captureAutomatic peak hold & memoryManual observation of idle pointerData outputOptional RS-232/USB for recordsNot availableOperator dependencyLowModerateBest suited forQC labs, audit-driven exportersBudget-conscious in-house checksPrice rangeHigherEconomical
Bursting Strength Tester Price in India
The cost of a bursting strength tester in India depends on configuration – analog models are the most economical entry point, digital models with peak hold, motorised clamping, and data output sit higher. We recommend you to share your material type (paper GSM range or board ply) and daily test volume with our team, and we will recommend the right model and share a formal quotation within 24 hours.
Frequently Asked Questions
Q1. What is the bursting strength tester used for? A bursting strength tester measures the maximum pressure (in kg/cm² or kPa) that paper, paperboard, corrugated board, textiles or laminates can withstand before rupturing. It is a core quality-control instrument in packaging, paper and textile industries.
Q2. Which standards apply to bursting strength testing in India? The primary Indian standard is IS 1060 (Part 1) for paper and allied products. International equivalents include ASTM D3786 (textiles), ASTM D774 (paper), ISO 2758 (paper) and ISO 2759 (board).
Q3. What is the difference between bursting strength and bursting factor? Bursting strength is the absolute pressure at rupture (kg/cm²). Bursting factor normalises this against grammage: Bursting Factor = (Bursting Strength in g/cm² ÷ Grammage in g/m²) × 1000. Buyers of paper often specify bursting factor; box buyers usually specify bursting strength.
Q4. How often should a bursting strength tester be calibrated? At minimum once a year, or immediately after diaphragm replacement or relocation of the instrument. LabZenix provides traceable recalibration services across India.
Q5. Can one instrument test both paper and corrugated board? Yes, provided the pressure range covers both applications and the correct clamping pressure is used. LabZenix offers dual-range models suitable for paper (low range) and multi-ply board (high range).
Q6. Why do bursting strength readings vary between tests? Common causes include specimen slippage due to inadequate clamping, an aged or non-standard diaphragm, incorrect pressure-increase rate, and unconditioned specimens. Testing conditioned samples (27 ± 2°C, 65 ± 2% RH) on a standards-compliant instrument minimises variation.
