The Topcon 4V Refractometer is a high-quality instrument designed for accurate measurement of refractive index and dispersion of various substances. This refractometer is equipped with a main bulb, specifically the Topcon 4V Refractometer Main bulb [42300-10690-LS], which ensures optimal performance and reliable results. With its advanced technology and precision optics, this refractometer offers exceptional accuracy and repeatability in measuring the refractive index of liquids, solids, and semi-solids. It is commonly used in industries such as pharmaceuticals, food and beverage, chemical, and research laboratories. The Topcon 4V Refractometer features a user-friendly interface, allowing for easy operation and quick measurements. Its compact and portable design makes it convenient for both laboratory and field use. The instrument is equipped with a 4W bulb, providing sufficient illumination for clear and sharp readings. This refractometer is manufactured by Topcon, a renowned brand known for its commitment to quality and precision. The Topcon 4V Refractometer Main bulb [42300-10690-LS] is a genuine replacement bulb designed specifically for this model, ensuring compatibility and optimal performance. Whether you are a scientist, researcher, or quality control professional, the Topcon 4V Refractometer with its main bulb is an essential tool for accurate and reliable refractive index measurements. Invest in this high-quality instrument to enhance your laboratory or production processes and achieve precise results every time.