Witt India launches Leak-Master Easy for pharma packaging

Leak tests with methylene blue

Leak-Master Easy (Photo: Witt)

Witt India, an Indo-German company involved with design, engineering, manufacturing, supply & services of a complete range of axial flow fans, centrifugal fans and jet fans, has launched the Leak-Master Easy for leaky pharmaceutical packaging.

Leaky pharmaceutical packaging can endanger the shelf life and efficacy of packaged medicines. Leak test is therefore a must. This can be done particularly easily and reliably by means of a methylene blue test.  

As particularly sensitive products, medicines require high quality packaging. Even the smallest leaks, which are invisible to the naked eye, render the protective barrier of blister packs ineffective. Oxygen, moisture and microorganisms can penetrate and can render the medicines unusable. 

To test the integrity and tightness of blister packs in particular, the packs are placed in a container with an ethanol-based test liquid containing methylene blue as a dye. The blue dye “creeps” into leaking packages and colors the contents a striking blue. Defective seals or blister cavities can thus be clearly identified. The method is suitable for detecting leaks with a size of at least approx. 10 – 20 µm.

The Leak-Master Easy from Witt can make the methylene blue test fast, reliable and user-friendly, claimed Witt: A vacuum is pulled above the water in the test chamber. The negative pressure first extracts the existing gas volume from leaking blisters. As soon as the negative pressure in the test chamber is equalized again, a negative pressure prevails in the leaking blister through which methylene blue liquid is drawn in. The leakage thus becomes quickly visible.

With the optionally available PLUS control unit, testing is more efficient. The tester simply places the product in the chamber and starts a stored test program. The required vacuum is pulled automatically and maintained for the desired test duration. 

The Leak-Master Easy is available in seven different chamber sizes.


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