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Blister Density Tester VDT/S

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Leak Testing

For checking the density the ERWEKA VDT/S performs a methylene blue dye test, which is divided into several phases. During the pressure maintenance phase the blisters are exposed to a vacuum, which is generated in the vacuum container. Afterwards the container is ventilated.

In the subsequent penetration process the blister is resting in the methylene blue solution, so that the solution can suck into any imperfectly sealed packaging. The integrated vacuum pump can be recalibrated using the optional validation kit which includes a vacuummeter, type DVR.

Blister Density Tester VDT/S Technical Data

Weight7 kg
Dimensions (H x W x D)166 x 300 x 340 mm
Voltage230 V/115 V / 100 Watt; 50-60 Hz
Exsiccator diameter150 mm (PC and PP)
200 mm (PC and PP)
250 mm (PC and PP)
300 mm (glass)
Operating temperature10 °C - 40 °C
Adjustable reduced pressure range-100 to -700 mbar (exsiccator: Ø 300 mm)
-100 to -900 mbar (exsiccator: Ø ≤ 250 mm)
Absolute pressure range (related to the atmospheric pressure)≥ 120 mbar
Adjustable range test run time99 hrs. 59 min. +/- 0.1 %
99 min. 59 sec. +/- 0.1 %