Atago RE-1197 Test Piece C (nD = 1.620) With Monobromonaphthalene, 4ml
Users who measure solid sample by NAR-1T, 2T, and 3T need to adjust the scale by measuring the Test Piece. Also, for High-Refractive Index model, NAR-4T users need to adjust the scale by the Test Piece. The Test Piece comes with ATAGO ABBE Refractometers as an accessory.