Some of types of refractometers

Some of types of refractometers


A refractometer is a laboratory or field device for the measurement of an index of refraction. The index of refraction is calculated from Snell's law and can be calculated from the composition of the material using the Gladstone-Dale relation.


There are four main types of refractometers: traditional handheld refractometers, digital handheld refractometers, laboratory or Abbe refractometers, and inline process refractometers. There is also the Rayleigh Refractometer used (typically) for measuring the refractive indices of gases.

In veterinary medicine, a refractometer is used to measure the total plasma protein in a blood sample and urine specific gravity.

In gemmology, a refractometer is used to help identify gem materials by measuring their refractive index.

Maintenance Data[]

Listed are recommended maintenance cycles that can be loaded within local computerized maintenance management systems. These cycles can also be used to estimate average monthly cycle inspections, PMs, and calibrations with average technician hours. This device is corrective maintenance only. Disclaimer: It is recommended to consult OEM cycles.

Maintenance cycles (in months) with estimated technician hours (in minutes)
Months Minute(s) Risk Level
Safety Inspection (INSP) 0 0 No Significant
Preventive Maintenance (PM) 0 0 N/A
Calibration (CAL) 0 0 N/A
Schedule Parts Replacement (SPR) 0 0 N/A
Acceptance Inspection (AI) 0 120 N/A


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