Narang scientific & electronic equipments manufactures and exports test tube mixer, model seco-512. It is specially developed for rapid mixing of solution in test tubes. The vibrating neoprene rubber cup is capable to hold a variety of sizes of test tube/flasks. It is ideally suited for dislodging sediments from tips of centrifuge tubes. The vacuum rubber pads are fitted at the bottom of the device. This test tube mixer is provided with speed control, cord and on/off switch and indicator.