Durable plastic case suitable for most of our optical refractometers with length is less than 175 mm (the gap the foam has this length).
Not suitable for models: RAL1, RAL2, RBR10, RUR5 and RSA1. These models are longer and have another case.
If you do not want to buy the case as a spare part it is not necessary to order it - it is a standard part of each our optical refractometer.