Most hand held Refractometers are basic optical/mechanical instruments, consisting of a focusing eyepiece, optics holder and a solid or liquid filled prism.
Preventive Maintenance consists of a thorough cleaning and calibration of the instrument. External optics and surfaces are cleaned, the prism cover is usually replaced and the instrument is calibrated.
Reconditioning a Hand Held Refractometer is a little more complicated. the instrument is disassembled, worn & broken parts are replaced. All surfaces are cleand and the instrument is reassembled and calibrated
Tek-Net Inc. specializes in the Reichert TS Meters. These instruments have liquid filled prisms. They may also bear the names of AO/AO Scientific/American Optical/Leica/Cambridge.
The various models are:
10400 which is used for Blood & Urine Analysis,
10419 which is used to determine salinity
10423 which is used for brix measurements
