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Tearing Testers
Tearing Testers

Elmendorf Tear Precise, Reliable Testing

QM137 Elmendorf Tearing Tester

The QM137 measures the tear strength of paper, paperboard, textiles and leather, quantifying tear work by the pendulum energy-loss method - a quality-control instrument for paper packaging. Designed and made by QMESYS in Korea, compliant with international standards and exported to 90+ countries.

The pendulum is released at the standard 70° angle and the tear energy loss is recorded instantly; dual ranges of 0~3200 g / 0~6400 g are selected by material, with good repeatability.

Specimens 66×100 mm with quick one-handed clamping; a light, compact bench-top design compliant with ASTM D1424 / D1922 / ISO 1974 tear methods.

Select the range by material
Light & Compact
Versatile Sampling Tooling
One-Touch Clamp
Complies with ASTM D 1424, D 1922 and ISO 1974
Request a Quote & Technical Proposal Download Technical Resources
✓ Free Installation & Commissioning ✓ 1-Year Full-Machine Warranty ✓ Exported to 90+ Countries Worldwide
70° Swing Angle
66×100mm Specimen Size
Dual Range 0~3200/6400g
Certifications
CE UL ISO 9001 RoHS FCC
QM137 Elmendorf tearing tester

Key Product Features

Bursting & tearing - authoritative research confirming the key role of burst/tear strength evaluation for paper, film and paperboard.

Pendulum Energy Method

The energy lost while tearing the specimen from a set angle is recorded instantly to measure tear strength.

Range by Material

Select the energy range by specimen material; 0~3200 g / 0~6400 g dual ranges cover different materials.

70° Swing Angle

The pendulum is released at the standard 70° angle; tear-energy measurement follows international methods.

Light & Compact

A light, compact bench-top size that is easy to place on a lab bench and convenient to move.

One-Hand Clamp + Versatile Tooling

Quick one-handed clamping; versatile sample tooling adapts to different specimens.

Elmendorf Tear
Tear Resistance of Paper & Film

The QM137 Elmendorf tearing tester records the energy loss the instant a pendulum released from 70° tears the specimen, measuring the tear strength of paper, paperboard, textiles, leather and film. Measurement range 0~3200 g / 0~6400 g, specimen size 66×100 mm, in a light, compact design.

From packaging paper to Li-ion separators, from textiles to film labels - a material's tear resistance directly affects product reliability and durability in use. The Elmendorf method is the internationally recognized standard for tear-strength testing.

Designed for tear-resistance evaluation of film and paper - the Elmendorf pendulum method for precise tear-energy measurement.

  • ▪Elmendorf pendulum method · international standard
  • ▪0~3200 g / 6400 g · dual range optional
  • ▪Paper / textile / leather / film · multi-material
  • ▪70° swing angle · standard release
  • ▪Light & compact · one-hand clamp

Core Parameters

QM137
Product Type Elmendorf Tearing Tester
Measuring Range 0~3200g / 0~6400g
Specimen Size 66×100mm
Swing Angle 70°
Suitable For Paper / paperboard / textile / leather
Overall Dimensions 500×200×300mm

Product Highlights

  • Select the range by material
  • Light & Compact
  • Versatile Sampling Tooling
  • One-Touch Clamp
  • Complies with ASTM D 1424, D 1922 and ISO 1974
  • Designed & Made in Korea
  • Exported to 90+ Countries Worldwide

Typical Applications & Applicable Standards

Tear-strength measurement of paper, paperboard, textiles, leather and more, compliant with international tear-test standards.

A

Typical Applications

Paper TearPaperboard TearTextile TearLeather TearPackaging Film TearTear ToughnessPendulum MethodPaper QC
S

Applicable Standards

ASTM D 1424 (Elmendorf tear)
ASTM D 1922 (film tear)
ISO 1974 (paper tear)
ASTM D638
ISO 527
GB/T 1040
ASTM D412

QM137 Technical Specifications

Dual range 0~6400 g · 70° swing angle · 66×100 mm specimen

ParameterQM137
Product TypeElmendorf Type Tearing Tester
Measuring Range0 ~ 3200 g; 0 ~ 6400 g (range selected by material)
Specimen Size66 × 100mm
Swing Angle70°
Applicable MaterialsPaper / paperboard / textile / leather
ClampOne-hand clamp; versatile sample tooling
Overall Dimensions (W×D×H)500 × 200 × 300mm
Power SupplyAC 220V 50/60Hz
Operating Environment10-35°C, ≤80%RH
Safety ProtectionOverload Protection / Emergency Stop

Glossary

Elmendorf Method
A pendulum tears the specimen; tear strength is represented by the energy lost by the pendulum.
g
Tear-energy reading unit (gram-force scale); dual ranges cover thin and thick materials.
70°
The standard swing angle at which the pendulum is released.
Energy Loss
The energy difference before and after the pendulum tears the specimen - i.e. the tear work.
ASTM D 1424 / ISO 1974
International standard for Elmendorf tear testing of textiles and paper.

Dual Range

0~6400g

70°

Standard swing angle

One-Hand Clamp

Quick clamping

Compact

Easy bench-top placement

ASTM D1922

Compliant with international tear-test standards.

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 R&D and manufacturing of high-end materials testing instruments. Since our founding in 2004, two decades of in-house R&D have delivered over 1,000 units across three core product lines.

Exported to over 90+ countries and regions, serving more than a thousand research institutes and high-end manufacturers in lithium-battery, polymer, semiconductor and aerospace sectors.

"Every tear, every swing, every reading - traceable and repeatable."

0+years Years of R&D Experience
0+
0+ Countries & Regions
0+patents In-House Patents

Global Patents & Quality Certifications

QM137 Elmendorf tearing-tester core technology is protected by global patents; the product carries CE, UL and CSA international safety certifications, is designed and made in Korea, and is 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 new-energy materials companies worldwide across the Korean power-battery, Li-ion separator and solid-state-electrolyte value chain.

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

Tear, impact and fracture energy - authoritative research confirming the key role of the pendulum energy-loss method in evaluating material tear/fracture toughness.

Packaging Technology and Science · 2024 Mullen Burst

Mullen burst-strength test methods 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 Strength

Relation between kraft-paper burst strength and fiber composition

Effect of fiber length on Mullen burst.

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

Elmendorf tear-strength testing of textiles

Effect of fabric density on tear strength.

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

Puncture-strength testing 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 testing of plastic film

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 materials

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 Strength

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 testing 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

Relation between puncture strength and cushioning factor.

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

FAQ

Answers to common questions about QM137 purchasing, delivery and service.

What does the QM137 mainly test? +

Measures the tear strength of paper, paperboard, textiles, leather and similar materials: the energy lost by the pendulum as it tears the specimen from a set angle is recorded instantly to give the tear strength.

What are the core technical parameters? +

Per the specifications: measuring range 0~3200g / 0~6400g, specimen size 66×100mm, swing angle 70°, overall 500×200×300 mm.

What is the measuring principle? +

Elmendorf pendulum method: the pendulum is released from the set 70° angle, tears a pre-notched specimen, and tear strength is represented by the energy loss before and after tearing.

Which standards are met? +

Applicable standards: ASTM D 1424 (textile Elmendorf tear), ASTM D 1922 (film tear), ISO 1974 (paper tear).

How do I select the range? +

Choose the 0~3200 g or 0~6400 g range by specimen thickness and tear energy - small range for thin paper, large range for thick materials.

How are specimens clamped? +

Quick one-handed clamping with versatile sample tooling for different specimens, improving batch-testing efficiency.

What is the lead time for standard models? +

Standard-model lead time is 3-8 weeks; options follow the contracted lead time.

What about certification and after-sales? +

The unit is certified to CE / UL / RoHS / FCC etc., and undergoes three-tier calibration before shipment; after-sales includes 2-hour response, on-site engineers, a 1-year full-machine warranty and lifetime software upgrades.

Service & Support

Professional support throughout - from selection consultation to installation and commissioning, and from technical training to lifetime maintenance | 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

Make every tear
measurable in energy,and traceable in strength

With the pendulum energy-loss method and a standard 70° swing angle, the QM137 delivers reliable ASTM/ISO-compliant tear-strength data for paper, paperboard and textiles.

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