PT-LT to test the quality of the packaging process of tablets
The PT-LT is used to test for the integrity of packed strips, blisters and small sachets containing tablets, granulates, liquids and so on. The instrument is used to test the quality of the packaging process and to check that the seals enclosing the product are perfectly intact. The PT-LT leak tester is designed to find the smallest holes and imperfections in blister packs and other semi-rigid product packaging. It is designed in compliance to the USP monograph [1146].
PT-LT to test the quality of the packaging process
Test Procedure
The leak test apparatus is widely applied in the pharmaceutical industry for checking strips, blisters and bottles containing tablets, capsules, syrups and so on. It also find application in the food industry where it can be effectively used to check the air-tightness of sweet packets, ready-to-eat pre-packed foods, confectionery packaging, packs of noodles, sauces to name but a few. Samples are placed into the desiccator's housing and the lid is placed in position.
The pump starts to produce a vacuum inside the desiccators and the vacuum is held for a pre-set time. The first issue is that he tested package should keep its shape during this test; otherwise the sealing is not correct. Secondly, as the package is immersed in a colored dye solution (normally Methylene Blue), the venting of the desiccators will allow any holes to be penetrated by the dye and the contents of the flexible packaging will also be stained with the same coloring material. Similarly small bottles can also be tested. A sheet of paper will absorb any leaking fluid.
Operating Principle
The operation of the PT-LT leak tester could not be any easier. Once on and the sample placed in position, use the [SET]-key and select your "User ID". Once this has been entered, press the [SET]-key once again and you can enter the "Sample ID". This is an alphanumeric entry which can be up to 8 characters long. Using the [SET]-key once again allows you to enter the "Number of Samples". Now enter the "Batch Number" (again with up to 8 characters) and then the "Vac Set"-level which goes up to a maximum of 699mmHg. Finally, use the [SET]-key to enter the "Hold Time" (up to a maximum of 99 minutes). Now press the [ENTER] - key to accept the entered data. Pressing the [RUN]key will now start the programmed sequence. The vacuum pump then generates a vacuum in the desiccator, holds it and then releases it using the time periods entered previously in the program.
PT-Node Network Adapter for Printing and Data Transfer
PT-Node is an adapter that connects up to two Pharma Test instruments simultaneously to a network using a wired LAN connection. This way you can print test results from the instrument via your web browser on any local or network printer. Furthermore, it is possible to transfer the test results from the instruments to external systems in the same network. PT-Node supports PT-LT via the PT-PSC parallel to serial adapter.
| Parameter | Specification |
| Vacuum Level | > 650mmHg |
| Vacuum Setting | Vacuum can stabilize for a set value from:
. Less than 400mmHg: ± 10mmHg within 30 seconds . Above 400mmHg: ± 5mmHg within 30 seconds |
| Display | Large 160 x 20 mm LCD |
| Data Entry | Function key |
| Timer | Can be set from 1 to 99 minutes |
| Desiccator Sizes | 380mm, 250mm, 200mm or 150mm Ø (optional) |
| Printer | Parallel port for dot-matrix printers |
| Power | Nominal 220 - 240V |
| Instrument dimensions | Approx. 360 x 250 x 240 mm (Length x Width x Height) |
| Net weight | Approx. 14.5 kg |
| Certification | All components certified to USP / EP requirements |
| CE / EMC Certification | All CE / EMC Certification provided |
| Validation | All IQ & OQ documents included |
We reserve the right to make technical changes without any prior notice.
| Inner Diameter | Useable Inner Height | Volume | Part No. |
| 380mm | 283mm | 18.5l | 26-02040 |
| 250mm | 225mm | 9.20l | 26-02020 |
| 200mm | 175mm | 4.45l | 26-02030 |
| 150mm | 135mm | 2.15l | 26-02010 |
