The burst test is frequently used as a general guide to the strength of paper, solid board and corrugated board. Bursting strength is usually quoted in kPa. We determine bursting strength using a digital hydraulic paper or digital hydraulic board burst tester as shown below.

 Burst testing machine at Smithers 
Burst index (kPa.m2/g) = burst strength/basis weight.

Standards and accreditation

Smithers UKAS ISO 17025 accredited testing can be performed to both British and International standards; BS 3137, BS 2922:1, ISO 2758 and ISO 2759.

Hydrualic and pneumatic bursting stength testing is included in our Paper Proficiency Service.

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