Density

Exponential Business and Technologies Company

Bridging You and Nano

Density Testing

A fluid inside a glass U-tube will vibrate at a certain frequency depending on the mass and temperature. The measured frequency is compared to known calibration points for accurate results. Density plays an important role in beverage, chemical, petroleum, pharmaceutical and sugar industries. The density of a fluid is an important parameter that is necessary for the application other measurement techniques and complete understanding of a fluid’s properties.

Typical Experimental Results:

Density and Specific Gravity of Motor Oil at Different Temperatures with Viscosity Correction

Temperature (°C)	Density VC (g/cm3)	SG VC
10	0.86357	0.8638
15	0.86064	0.8614
20	0.85746	0.8590
25	0.85445	0.8570
30	0.85094	0.8547
35	0.84833	0.8534
40	0.84508	0.8517
45	0.84196	0.8503
50	0.83883	0.8490
55	0.83562	0.8478
60	0.83254	0.8468
65	0.82936	0.8458
70	0.82621	0.8450
75	0.82306	0.8443
80	0.81986	0.8437
85	0.81671	0.8432
90	0.81355	0.8428

density3

Motor oil density vs. temperature

Density of Cyan and Magenta Printer Inks

Printer Ink	Test 1(g/cm3)	Test 2(g/cm3)	Test 3(g/cm3)	Average(g/cm3)
Cyan	1.06773	1.06774	1.06774	1.06774
Magenta	1.08215	1.08219	1.08220	1.08218

Applications:

21 CFR Part 11	3 Point Calibration	Bubble Detection
Density	Disk Protection	Gases
Liquids	Petroleum	Sample Purity
Solutions	Specific Gravity	Suspensions
Temperature Control	U-Tube	Viscosity Correction

For more information please read our application notes.

Instruments: Rudolph Research Analytical DDM 2911 Density Meter

density Key Specifications:

Measurement Range	0 – 3 g/cm3
Temperature Range	0º C – 90º C
Pressure Range	0 – 10 bars
Measurement Modes	Single Multiple Continuous
Accuracy	Density: 0.00005 g/cm3 Temperature: 0.03º C
Repeatability	Density: 0.00001 g/cm3 Temperature: 0.01º C
Resolution	Density: 0.00001 g/cm3 Temperature: 0.01º C
Minimum Sample Volume	< 1 mL