... Meter, Colorimeter,Gloss Meter, Tintometer, Automatic Polarimeter, Auto Melting Point Apparatus, Automatic Refractometer, Abbe Refractometer, PH/DDS/TDS Meter, Incubator ... and ABC-202. The ABC-201 can be used with many types of conventional tubes in different blocks, but the ABC- ... the center of the sample vials.There are two different types of the needles used in the Concentrator: Stainless steel ...