Chemical tests

• Ozone resistance test
• Thermogravimetric test
• Gas toxicity index determination
• Carbon black content and mineral load determination
• Halogen acid content determination
• Acidity index determination
• Lead content determination

Details of tests

Density or absolute gravity (*)
Measurement of polymer materials with the apparent mass method, using an analytical balance and immersion liquid (distilled water or 96% ethyl alcohol).

Water absorption
Measurements of polymer materials based on gravimetry, using an analytical balance and thermostat bath with condenser.

SHORE A hardness, MICRO IRHD
Testing of polymer materials using a Shore A hardness tester and IRHD micro hardness tester.

Residual deformation after compression
Measurement of the capacity of polymer materials to retain their elastic properties at specified temperatures after prolonged compression at constant deformation.

Deterioration in ozone (*)
Measurement of the capacity of polymer materials to retain their properties after prolonged exposure in low or high ozone concentration atmospheres.

Deterioration in liquids
Testing of the capacity of polymer or metallic materials to retain chemical and physical properties after prolonged exposure in specific liquids.

Deterioration in salt spray
Testing of the capacity to withstand corrosion in artificial atmospheres - salt spray.

Determination of the chlorine content of liquids (*)
Testing of the corrosiveness and toxicity of polymer materials by scrubbing gases released during combustion in specific liquids and ion chromatography analysis.

Determination of the bromine content of liquids (*)
Testing of the corrosiveness and toxicity of polymer materials by scrubbing gases released during combustion in specific liquids and ion chromatography analysis.

Determination of the fluorine content of liquids (*)
Testing of the corrosiveness and toxicity of polymer materials by scrubbing gases released during combustion in specific liquids and ion chromatography analysis.

Determination of the cyanide content of liquids
Testing of the toxicity of polymer materials by scrubbing gases released during combustion in specific liquids and ion chromatography analysis.

Determination of the pH of liquids (*)
Testing of the corrosiveness of polymer materials by scrubbing gases released during combustion in specific liquids and pH meter analysis.

Determination of the conductivity of liquids (*)
Testing of the corrosiveness of polymer materials by scrubbing gases released during combustion in specific liquids and conductor meter analysis.

Determination of the hardness of liquids
Measurement of the quantity of calcium and magnesium to calculate the hardness of liquids, using ion chromatography.

Determination of ash
Measurement of the quantity of ash in polymer materials after combustion using a thermobalance.

Determination of carbon black content (*)
Measurement of the carbon black content in polymer materials after combustion using a thermobalance.

Thermogravimetric analysis (*)
Semiqualitative characterisation of polymer materials using a thermobalance.

Quantitative analysis of metallic elements :
Quantitative measurements of lead, cadmium, chromium, zinc, silver, nickel, copper, tin using atomic absorption spectrophotometry (AAS). Other elements may be analysed on request, subject to obtaining specific accessories.

Determination of carbon monoxide (CO)
Testing of the toxicity of polymer materials using infrared spectrophotometry to analyse gases released during combustion.

Determination of carbon dioxide (CO2)
Testing of the toxicity of polymer materials using infrared spectrophotometry to analyse gases released during combustion.

Determination of hydrogen sulphide (H2S)
Testing of the toxicity of polymer materials by scrubbing gases released during combustion in specific liquids and ion chromatography analysis.

Determination of ammonia (NH3)
Testing of the toxicity of polymer materials by scrubbing gases released during combustion in specific liquids and ion chromatography analysis.

Determination of formaldehyde (CH2O)
Testing of the toxicity of polymer materials by scrubbing gases released during combustion in specific liquids and ion chromatography analysis.

Determination of Acrylonitrile (C2H3N)
Testing of the toxicity of polymer materials using gas chromatography and mass spectrometry (GC-MS) to analyse gases released during combustion.

Determination of sulphur dioxide (SO2)
Testing of the toxicity of polymer materials by scrubbing gases released during combustion in specific liquids and ion chromatography analysis.

Determination of nitric oxides (NOx)
Testing of the toxicity of polymer materials by scrubbing gases released during combustion in specific liquids and ion chromatography analysis.

Determination of polycyclic aromatic hydrocarbons (PAH)
Measurement of the quantity of PAHs by gas chromatography and mass spectrometry (GC-MS).

Migration of antimony, arsenic, cadmium, chromium, selenium and mercury
Measurement of the quantity released by products in specific liquids, using atomic absorption spectrophotometry (AAS).

Polymer matrix identification
Based on infrared spectrophotometry (FTIR).

(*) tests for which IMQ is accredited by ACCREDIA - SINAL