Ananda Barua proposes a new product idea - a formalin test kit. Formalin is a common antibacterial agent found in cleaners and disinfectants, composed of formaldehyde and methanol. The proposed test kit would resemble a thermometer or medical scanner and contain glass, plastic, and aluminum components as well as scientific ingredients. Barua believes the test kit, priced between 300-3,000 taka, would be profitable for people of all socioeconomic levels and help reduce formalin in society for public health and private financial gain.