Section 5 | Density Standards Section

Overview

Overview


Density Standards Section maintains standards to calibrate hydrometers for measuring liquid densities of oil. Its density measurements use the hydrostatic weighing method and are traceable to the 1 kg national standard.  

     

Equipment & Standards


  Electronic Balances
  • Mettler Toledo AE200, 200g capacity, 0.1mg
  • Mettler Toledo PM5003, 5100g capacity, 1mg
  • Mettler PC16, 16kg capacity, 0.1g
  Mass Comparator
  • Mettler Toledo AT1005,1109g capacity, 0.01mg
 

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

Service Offered

Method

Glass Hydrometers  

Specific Gravity Hyrometer

(0.500 – 2.000) Specific Gravity

Calibration

Hydrostatic Method

Density Hydrometer

(0.500 – 2.000) g/mL

API Scale Hydrometer

(15 – 90) oAPI

Baume Hydrometer

Up to 100 oBe

Alcohol Hydrometer

Up to 100 %v Alcohol

Brix Hydrometer

(10 – 100) oBrix

Densitometer / Digital Hydrometer

(0.50 – 2.00) g/mL

Comparison

Laboratory Volumetric Glasswares  

Buret

0.1 mL to 2000 mL

Calibration

Gravimetric Method

Volumetric Flask

Volumetric (Transfer) Pipet

Measuring (Graduated) Pipet

Specific Gravity Measuring Apparatus (Glass Pycnometer, Density Cup)

Piston or Plunger Operated Volumetric Apparatus (POVA)

Pipette Single Channel / Multi channel

Above 100 µL

Calibration

Gravimetric Method

Dilutor, Dispenser, Displacement Buret

Moisture Measuring Equipment  

Grain Moisture Meter

(12 to 20) % moisture Content

Calibration

ISO 712 (Oven Dry Method)

Wood Moisture Meter

(12 to 15) % moisture Content

Testing

OIML R 92 (Oven Dry Method)

Thermal Conductivity Testing

Testing