Packaging Testing Blog

Guides to packaging leak, seal and strength testing methods from KHT Instruments.

Vacuum Decay Leak Test Explained

A vacuum decay leak test finds package leaks by the pressure rise in an evacuated chamber. See how it works, what sets its sensitivity and where it fits.

2026-10-25

Flexible Packaging Testing Equipment for a QC Lab

Flexible packaging testing equipment for a QC lab usually covers seal integrity, heat seal prep, seal strength, film COF, dart impact and thickness checks.

2026-10-27

Bursting Strength Unit Conversions for kPa, psi and kgf/cm2

The bursting strength unit in ISO methods is the kPa. Convert kPa, psi and kgf/cm2 with NIST factors, and see how burst index adds grammage to the result.

2026-10-29

How to Use a Bursting Strength Tester Step by Step

How to use a bursting strength tester on board: condition the samples, check the diaphragm and clamp, run 20 valid bursts, then read and report the result.

2026-10-29

Bubble Leak Test for Packaging under ASTM F2096 and D3078

A bubble leak test finds gross package leaks by watching for bubbles under liquid. Compare ASTM F2096 and D3078, the test steps and the method's limits.

2026-10-29

Blister Leak Test Procedure for Pharmaceutical Blister Packs

A blister leak test checks the seal of every pocket on a blister card. Compare the blue dye and vacuum bubble methods and how to set test conditions.

2026-10-29

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