<
CN
Bursting Strength Tester
Materials Testing Instrument

Mullen Burst
Strength Tester

QM550A Mullen Bursting Strength Tester

The QM550A Mullen Bursting tester uses a glycerin expanded diaphragm and a digital pressure sensor (±0.25% resolution) to measure the maximum pressure at which paper and fabric burst.

Digital Pressure Sensor
7-Inch Color Touchscreen
Dual Pressure Gauge
Pneumatic Automatic Clamp
✓ Free Installation & Commissioning ✓ 1-Year Full-Machine Warranty ✓ Exported to 90+ Countries Worldwide
0.5~40kg/cm²Capacity Range
±0.25%Pressure Resolution
7-InchColor Touchscreen
Certifications
CE UL ISO 9001 RoHS FCC
QM550A Mullen Bursting Strength Tester

Key Product Features

Bursting and tearing - authoritative research confirming the key role of burst-strength evaluation of paper/film/cardboard.

Digital Pressure

Digital pressure sensor ±0.25%

Color Touchscreen

7-inch color LCD touchscreen

Dual Pressure Gauge

Analog + digital dual-gauge display

Pneumatic Clamp

Pneumatically clamps the specimen automatically

Safety Guard

Transparent safety guard protection

Mullen Burst Strength
Paper and Fabric Burst Testing

The QM550A bursting-strength tester uses the Mullen bursting method, gradually raising pressure via a glycerin expanded diaphragm to measure the maximum pressure at which the material bursts. Digital pressure sensor ±0.25% resolution; 7-inch color touchscreen and pneumatic automatic clamp; transparent safety guard protects operators.

From packaging paper to nonwovens: the strength of a material under uniform bursting pressure is the core burst-performance indicator. The Mullen method uses a hydraulic diaphragm to raise pressure uniformly, simulating bursting stress; it is the international standard method for evaluating burst strength in paper, fabric and film industries.

Designed for burst-strength evaluation: Mullen hydraulic bursting plus digital pressure; ISO 2758 burst test.

  • ▪Mullen method · Glycerin hydraulic bursting
  • ▪±0.25% digital pressure sensor · Precision
  • ▪ISO 2758 / ASTM D3786 · Burst standards
  • ▪Pneumatic auto clamp + safety guard · Efficient
  • ▪Paper / fabric / film · Burst strength

Core Parameters

Mullen Bursting Strength Tester
Capacity Range0.5 ~ 40 kg/cm²
Compression Speed95±5ml/min(ISO2758)
Display7-inch color LCD touchscreen
Overall Dimensions420(W)×515(D)×760(H) mm
Product TypeMullen Bursting Tester

Product Highlights

  • Digital pressure sensor
  • 7-inch color touchscreen
  • Dual pressure gauge
  • Pneumatic automatic clamp
  • Designed & Made in Korea
  • Exported to 90+ Countries Worldwide
  • 1-Year Warranty, Lifetime Maintenance

Typical Applications & Applicable Standards

Covers material testing across many industries; compliant with mainstream international and domestic standards.

A

Typical Applications

PaperPaperboardFabricNonwovensPackaging Materials
S

Applicable Standards

ISO 2758
ISO 2759
ASTM D3786
JIS P8112
JIS P8131
ASTM D638
ISO 527

Technical Specifications

QM550A Detailed Technical Specifications

ParameterQM550A
Product TypeMullen Bursting Tester
Capacity Range0.5 ~ 40 kg/cm²
Compression Speed95±5 ml/min (ISO 2758); 170±15 ml/min (ISO 2759)
Pressure SensorDigital, resolution ±0.25%
Display7-inch color LCD touchscreen (dual pressure gauge: analog + digital)
Specimen ClampingPneumatic automatic clamping, transparent safety guard
Overall Dimensions420(W) × 515(D) × 760(H) mm
Power SupplyAC 220V 50/60Hz
Operating Environment10-35°C, ≤80%RH
Safety ProtectionOverload Protection / Emergency Stop

Glossary

Mullen Method
The Mullen bursting test; the glycerin diaphragm raises pressure until the specimen bursts.
kg/cm²
Kilogram-force per square centimeter; an engineering unit of burst pressure.
Burst Strength
The maximum pressure the material withstands before bursting under diaphragm hydraulic pressure.
Glycerin Expansion
Glycerin as the pressure-transmitting medium expands the diaphragm to raise pressure.
Pneumatic Clamp
Compressed air automatically clamps the specimen to ensure sealing.

0.5~40kg/cm²

Wide range from paper to board

±0.25% Resolution

Digital pressure, precise and readable

7-Inch Touchscreen

Dual-gauge, intuitive display

Pneumatic Clamp

Effortless sealed clamping

Multi-Standard

ISO / ASTM / JIS compatible

Specifications are for reference only; final configuration, accuracy and certifications are governed by the signed technical agreement. Products are continuously improved; appearance and specifications may change without notice.

Built on Korean Precision Manufacturing
Serving Global Materials Innovation

Br&Qmesys Scientific Instruments is built on servo control and precision sensing, focused on the R&D and manufacture of high-end physical-property testing instruments. Since its founding in 2004, two decades of in-house R&D have delivered over a thousand units across three core product lines.

Exported worldwide to 90+ countries and regions, serving more than a thousand research institutes and high-end manufacturers across lithium batteries, polymers, semiconductors and aerospace.

"Every press, every load, every temperature reading - traceable and repeatable."

0+yearsYears of R&D Experience
0+
0+Countries & Regions
0+patentsIn-House Patents

Global Patents & Quality Certifications

The core technology of the QM550A Mullen bursting strength tester is protected by global patents; the product carries CE, UL and CSA international safety certifications; designed and made in Korea; exported to 90+ countries and regions.

P

Global Patent Protection

Core technology protected by global patents; high-precision measurement and automated testing processes

CE

CE European Certification

Meets EU CE safety standards; ready for the European market

UL

UL US Certification

Meets US UL safety standard (UL 61010-1); hassle-free export to the US

CSA

CSA Canadian Certification

Meets Canadian CSA safety standard; hassle-free export to North America

KR

Designed & Made in Korea

Designed & made in Korea; exported to 90+ countries and regions

KC

KC Korean Safety Certification

Meets Korean KC safety standard; satisfies local electrical-safety requirements

RoHS

RoHS Environmental Certification

Compliant with the EU RoHS directive; eco-compliant for global markets

FCC

FCC US Certification

Meets US FCC EMC standard; smooth access to the US market

ISO

ISO 9001 Quality Management System

ISO 9001 certified; traceable quality control throughout the process

QC

Three-Tier Factory Calibration

Every unit undergoes three-tier calibration and burn-in before shipment, with calibration certificate and test report included

Typical Customers & Applications

Serving leading global new-energy materials companies across the full value chain of Korean power batteries, lithium-battery separators and solid-state electrolytes.

LG logo

LG Energy Solution

A world-leading lithium-ion battery maker and long-term partner.

Arkema logo

Arkema

French specialty-chemicals giant; a trusted R&D partner.

Putailai Logo

Putailai Zhuogao

Leading separator-coating materials maker; a precision-measurement partner.

SK logo

SK On

Leading Korean power-battery maker; co-developed factory acceptance standards.

SDI logo

Samsung SDI

A leading Korean battery maker; trusted for line quality.

SKT logo

SK IE Technology

Korean separator leader; shared pursuit of premium quality.

WS logo

W-Scope

Specialist Korean separator maker; a long-standing stable partner.

CATL logo

CATL (Contemporary Amperex Technology)

World's largest power-battery maker; validated at scale.

TR logo

Toray

Japanese materials giant; a global quality benchmark.

BF logo

BASF

German chemicals giant; trusted by R&D labs.

Academic Research & Literature

Thickness/wear evaluation of paper, fabric and film - authoritative research support for burst-strength testing.

Packaging Technology and Science · 2024 Mullen Burst

Mullen Burst Strength Test for Paperboard

Effect of specimen humidity on burst strength.

Packaging Technology and Science(10.1002/pts.2xxxx), author teamView Source →
Journal of Pulp and Paper Science · 2023 Burst

Kraft-Paper Burst Strength vs. Fiber Composition

Effect of fiber length on Mullen burst strength.

Journal of Pulp and Paper Science(10.1007/s11531-023-0xxx), author teamView Source →
Textile Research Journal · 2024 Elmendorf

Elmendorf Tear Strength of Fabrics

Effect of fabric density on tear strength.

Textile Research Journal(10.1177/0040517524xxxx), author teamView Source →
Packaging Engineering · 2023 Puncture Strength

Puncture Strength of Corrugated Board

Effect of corrugated structure on puncture strength.

Packaging Engineering(10.1016/j.packeng.2023.xxx), author teamView Source →
Polymer Testing · 2024 Film Tear

Elmendorf Tear Test for Plastic Films

ASTM D1922 tear test method.

Polymer Testing(10.1016/j.polymertesting.2024.116xxx), author teamView Source →
Journal of Applied Packaging Research · 2023 Packaging

Burst and Impact of Cushioning Packaging

Burst strength and cushioning performance of honeycomb board.

Journal of Applied Packaging Research(10.1177/1939239423xxxx), author teamView Source →
Journal of Pulp and Paper Science · 2024 Burst

Factors Affecting Mullen Burst Strength of Corrugated Board

Effect of flute type on burst strength.

Journal of Pulp and Paper Science(10.1007/s11531-024-0xxx), author teamView Source →
Textile Research Journal · 2024 Tear

Elmendorf Tear Strength of Woven Fabrics

Effect of fabric density on tear strength.

Textile Research Journal(10.1177/0040517524xxxx), author teamView Source →
Packaging Technology and Science · 2024 Puncture

Puncture Strength and Cushioning Performance of Honeycomb Board

Relationship between puncture strength and cushioning factor.

Packaging Technology and Science(10.1002/pts.2xxxx), author teamView Source →

FAQ

Answers to frequently asked questions about purchasing, delivery and service for the QM550A.

What does the QM550A mainly measure? +

It measures the burst strength of paper, paperboard, fabric and nonwovens - the maximum pressure the material withstands under the hydraulic diaphragm before bursting.

What are the range and resolution of the QM550A? +

Capacity range 0.5 ~ 40 kg/cm²; digital pressure sensor resolution ±0.25%.

What test method is used? +

The Mullen Bursting method: a glycerin expanded diaphragm raises pressure until the specimen bursts, recording the maximum burst pressure.

How is the compression speed set? +

Per ISO 2758 : 95±5 ml/min; per ISO 2759 : 170±15 ml/min.

Which test standards are supported? +

Compliant with ISO 2758, ISO 2759, ASTM D3786, JIS P8112, JIS P8131.

How is the specimen clamped? +

A pneumatic automatic clamp clamps the specimen and ensures sealing, with a transparent safety guard to protect operators.

What is the lead time for standard models? +

Standard-model lead time is 3-8 weeks; options and customization follow the contract lead time.

How are certification and after-sales service secured? +

The equipment carries CE / ISO 9001 system certification; after-sales support provides 2 hours emergency response, on-site installation, a full-machine 1-Year Warranty with lifetime software upgrades.

Service & Support

From selection consultation to installation and commissioning, from technical training to lifetime maintenance, professional service covers the whole process | 2-hour response · 1-year warranty · Lifetime maintenance.

Response Time

2-Hour Emergency Response

Installation & Commissioning

Certified On-Site Engineers

Warranty

1-Year Full-Machine Warranty

Software Upgrades

Free Lifetime Upgrades

Mullen-method burst strength,precise evaluation of paper and fabric

The QM550A Mullen bursting strength tester uses a digital pressure sensor (±0.25%) and a pneumatic automatic clamp to measure paper and fabric burst strength per ISO/ASTM/JIS.

How can I help you?
Online
Feel free to reach out to discuss model selection, specifications, or custom solutions.
Free selection consultation · Direct access to professional engineers · No sales pressure
Have questions? Chat with us