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The industrial revolution 4.0 demands universities to improve the quality of the graduates, while the competency standards have not yet been fully achieved. This study aims to build a virtual laboratory (V-Lab) as an independent practicum media through remedial learning. The development of V-Lab used the System Development Life Cycle (SDLC) model with the software Code Codeigniter and PHP 7.2, while the database used MySQL and PosgreSQL. The testing was done with Stub Testing, Unit Testing and inspection with Integration Testing for interactions between modules. The test results showed high feasibility in design, representation of user needs, reliability, security system, and the ease of the usage. The V-Lab is also able to increase the learning motivation of the students and have an impact on increasing student learning outcomes. While efficiency can be improved on the aspects of time flexibility, place of learning, facilities and cost savings because the learning is virtual. This study recommends V-Lab as an effective and efficient remedial learning through a virtual laboratory.