Glycol degradation

Glycol degradation

• PEG Stability: A Look at pH and Conductivity Changes over Time in Polyethylene Glycols

Hampton Research measured pH and conductivity of 8 different polyethylene
glycols stored in a variety of typical laboratory storage settings over a period of 18 months.

• AN INVESTIGATION OF THE DEGRADATION OF AQUEOUS ETHYLENE GLYCOL AND PROPYLENE GLYCO L SOLUTIONS USING ION CHROMATOGRAPHY

Aqueous solutions of ethylene glyco land propylene glycol produce acidic degradation products
upon thermal oxidation. This results in a decrease in pH of the aqueous solutions which could
accelerate the corrosion of metallic components of solar collectors.
The increase in the concentrations of degradation products in solution was measured over time 
using the Ion Chromatography Exclusion(ICE) method of analysis

• http://fire.nist.gov/bfrlpubs/build85/PDF/b85009.pdf Solar DEGRADED AQUEOUS GLYCOL SOLUTIONS...]

Analyzers

• Ethylene Glycol Analyzers

• On-line Fluid Property Analyzer reduces demand for oil

The Fluid Property Analyzer utilizes a tuning fork mechanical resonator whose method of 
simultaneously and directly measuring viscosity, density and dielectric constant is patented.

The sensor is resistant to contamination and corrosive degradation from materials such as particles, 
fuel, ethylene glycol, wear metals, acids and bases.

MEAS Sensors

• Fluid Property Sensors, (MEAS)

• MEAS FPS2820

The FPS2820B12C4 is a novel fluid property sensor that will directly and simultaneously measure the viscosity, 
density, dielectric constant and temperature of fluids. Relying on patented tuning fork technology, the sensor 
monitors the direct and dynamic relationship between multiple physical properties to identify a wide variety of 
fuels like marine heavy fuel oil, light fuel oil or kerosene.

• Fluid Property Sensor - FPS2810

 The FPS2810B12C4 is a novel Oil Quality sensor that directly and simultaneously monitors the quality of fluids 
such as engine oil, transmission and brake fluid, hydraulic and gear oils