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Atago Hand Held Refractometer MASTER-20M

MASTER-20M is for low concentration such as juices and cutting oil etc.and is a good alternative choice when the water resistant feature is not a priority and the Temperature Compensation will be carried out manually. Not equipped with the Automatic Temperature Compensation feature.The MASTER-20M is made of metal, and the MASTER-20PM is plastic. The specifications are exactly the same. For salty and acidic samples, choose the plastic body, MASTER-20PM. For the model with Automatic Temperature Compensation please choose MASTER-20α.