Virtual laboratories (VLs) allow for a safe learning environment in the laboratory. However, they have some restrictions on haptic feedback, such as the perceived weight or force feedback, that limit users’ experiences. Our goal is to enhance the experience of VLs solely with a virtual reality (VR) controller, without requiring additional hardware. This paper explores the potential to utilize vibration feedback from a VR controller, combined with visual feedback, to influence the perceived virtual liquid weight in VR. Unlike prior work that focuses on simulating the weight of rigid objects, our work presents a simulation of virtual liquid weight perception using vibration frequency modulation. Through an exploratory study, our results showed that as vibration frequency increased, participants perceived the virtual liquid weight as heavier, and vice versa. As an initial step, we believe that our results provide the potential to enhance the perception in VLs through commercially available haptic devices and offer new opportunities to strengthen perception, realism and interaction in VLs.