https://habitium.com/ie/materials-testing-equipment/587764-hand-held-refractometer-for-measuring-the-concentrations-of-industrial-liquids-1800-limit.htmlGB-587764Hand-held refractometer for measuring the concentrations of industrial liquids 1800 Limithttps://cdn.habitium.com/1293874/hand-held-refractometer-for-measuring-the-concentrations-of-industrial-liquids-1800-limit.jpg?sto=true&width=480270.57instockLimit185.98219.9800/Materials Testing Equipment