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Leak Test Apparatus Manufacturer,Supplier and Exporter in India

Leak Test Apparatus

Product Code : EL-RE-2224
Jlab Export is a leading Leak Test Apparatus Manufacturer,and suppliers in India

Strip, blister and sachet packs are checked for leaks in this apparatus by holding them under vacuum in a coloured dye, usually methylene blue. A compact pump draws the vacuum inside a polycarbonate desiccator, a front-panel gauge shows the level, and the hold time is set from 15 to 9999 seconds. A pack with a faulty seal takes up dye when the vacuum is released.

Specifications

Vacuum rangeUp to 22 in Hg
Vacuum settingSettles at a set value below 400 mm Hg, ±10 mm Hg, within 30 seconds
Hold time15–9999 s, programmable
DesiccatorPolycarbonate, 6, 10 or 12 in
Display and keys4-digit seven-segment red LED, soft-touch keys
Vacuum controlFront-panel vacuum gauge, control valve to isolate the desiccator
Power230 V ±10% AC, 50 Hz, 10 W
Weight13 kg (approx.)
Supplied withVacuum pump, polycarbonate desiccator with connecting tubes, operation manual
Minimum order quantity1 unit
Dispatch timeUsually 7–10 working days
ManufacturerJLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India

Packaging Test Practicals for Pharmacy Students

Industrial pharmacy students run the leak test on tablet strips and blister packs. They make up the dye bath from Methylene Blue (Cellulose) in one of the Squat Form Beakers, Borosilicate Glass, Economy, pour it into the desiccator and sink the packs under it. After the hold time and release, they lift each pack out with Forceps, Stainless Steel Blunt Tip, rinse it and open the pockets.

A useful comparison sets a sound strip beside one pierced with a fine needle. Students look for blue staining on each tablet with a Hand Lens with Bakelite Handle and record which pockets failed. They also check that each pack keeps its shape through the test, which points to a sound seal.

Frequently Asked Questions

How do I read the result of a leak test?
After the vacuum is released, rinse the packs and open each pocket. Blue dye inside a pocket or on a tablet means the seal or the foil leaks. Packs that keep their shape and show no dye inside have passed.

How long should the vacuum be held?
The hold time is programmable from 15 to 9999 seconds. Use the time your method or product specification gives. A longer hold lets more air escape from a leaking pack, so more dye is drawn in on release. Keep the same time for every batch you compare.

Which desiccator size should I choose?
The polycarbonate desiccator is made in 6, 10 and 12 inch sizes. Choose one that holds a full strip or blister card flat under the dye, with room above the liquid. Larger cards and sachets need the 10 or 12 inch size.

What vacuum level does it reach?
The range is up to 22 inches of mercury, shown on the front-panel gauge. The vacuum can settle at a set value below 400 mm Hg within 30 seconds, held to ±10 mm Hg. A control valve then isolates the desiccator from the pump for the hold time.

Why are packs tested under coloured dye?
Under vacuum, air inside a leaking pack escapes through the hole. When the vacuum is released, outside pressure pushes dye back in through the same hole. The colour makes even a small leak easy to see on the tablet or inside the pocket.

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Last updated: 6 November 2026


   

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