Section 5 | Density Standards Section

Overview

Overview


Density Standards Section maintains standards to calibrate hydrometers for measuring liquid densities. Its density measurements use the hydrostatic weighing method and are traceable to the physical quantity mass. The section also conducts performance testing of moisture meters.  

 

Performance Testing of Grain Moisture Meters

 

Set of Standards hydrometers

 

 

Hydrostatic Set-up for Calibration of Hydrometers

 

 

Calibration of Hydrometers by Hydrostatic  Method

 

   

Staff


  • Marilyn C. Fos – Section Head
  • Luis F. Occiano

Traceability

Traceability Small Volume


 glassware

 

Traceability Density


 

 

Services

Capability


INSTRUMENT / EQUIPMENT RANGE SERVICES METHOD
Specific Gravity Hydrometer (0.500 – 2.000) Specific Gravity Calibration Hydrostatic Weighing
Density Hydrometer (0.500 – 2.000) g/mL
API Scale Hydrometer (15 – 90) °API
Baume Hydrometer Up to 100 °Be
Alcohol Hydrometer Up to 100 %v Alcohol
Brix Hydrometer (10 – 100) °Brix
Digital Hydrometer (0.50 – 2.00) g/mL Comparison
Grain Moisture Meter (12 to 20) % moisture Content   ISO 712 (Oven Dry Method)
Wood Moisture Meter (12 to 15) % moisture Content Performance Testing   OIML R 92 (Oven Dry Method)