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Using the Opthalmic bottle squeeze force tester, the manufacturers are able to determine the finger strength needed to squeeze different bottle designs made from a variety of plastic materials. The tests is performed at 90 degrees to simulate assisted administration of the drop and at 45 degrees to simulate self-administration by the patient.
At the heart of the squeeze force testing system is the digital Chatillon DFS II force gauge that features a simple user interface, large full color display and offers accuracy better than 0.1% of full scale. Loads are displayed in ozf, gf, lbf, kgf and N units. The digital DFS II force gauge was used with a mounting plate along with universal fixtures to accommodate testing of ophthalmic bottles of various sizes.
The ophthalmic squeeze force tester incorporated proprietary NEXYGEN DF testing software, which offers pre and post-test analysis of test results displayed as easy-to-read graphs in a Windowsbased environment. Test results are presented in a spreadsheet format for analysis. Units of measure, fonts and titles are easily customized. Bluetooth connectivity allows for the wireless transfer of test results directly to a personal, laptop or handheld computer.