How to Evaluate Chemical Resistance Before Choosing a Containment Liner
Before you choose a containment liner, ask the supplier to confirm its chemical resistance for the fluids and exposure conditions on your site. That confirmation should identify the product being evaluated and any limits on its use. Otherwise, a broad rating can leave important questions unanswered.
For facility engineers and HSE managers, this review is part of specifying the liner. Gather chemical information, review supporting data, and resolve differences between the tested conditions and your application before installation.
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What Is Chemical Resistance in a Containment Liner?
Chemical resistance is a material’s ability to retain the properties needed for its intended use when exposed to a chemical. For a containment liner, that means evaluating whether chemical contact could affect its ability to perform as a barrier.
The exact liner formulation matters. Two polyurea products can have different properties, so a compatibility result for one shouldn’t be treated as approval for the other. Ask for information tied to the product you’re considering.
How Do You Evaluate Chemical Resistance Data?
ASTM’s D543 practices for evaluating resistance to chemical reagents explain that the usefulness of laboratory results depends on how closely testing resembles end-use conditions. The practices distinguish immersion from brief splash or spill exposure and address changes in properties such as weight, dimensions, appearance, and strength.
A brief spill and prolonged immersion are different exposures. Before accepting a chemical-resistance rating, check the fluid, concentration, temperature, contact time, and post-test properties. Short-duration results alone don’t establish suitability for continuous immersion.
Use these questions when reviewing the supplier’s data:
| What to check | What to ask the supplier |
|---|---|
| Fluid identity | Was the exact product or a representative formulation evaluated? |
| Concentration | Does the reported concentration cover the material before dilution as well as during use? |
| Temperature | Does the test address the temperature of the fluid reaching the liner? |
| Contact time | Does the result cover the expected spill-response period or prolonged contact? |
| Rating criteria | Which properties were measured, and what counted as an acceptable change? |
If a chart says only “good” or “resistant,” ask what that rating means. Request the test conditions and acceptance criteria before using it to make a selection.
Build an Exposure List for the Containment Area
List what could reach the liner, including stored fluids, treatment products handled nearby, and maintenance cleaners. For process water, include available analyses rather than relying on a general label such as produced water or wastewater.
Safety data sheets (SDS) can help identify those products. OSHA’s SDS format places composition information in Section 3, physical and chemical properties in Section 9, and stability and reactivity information in Section 10. An SDS may use concentration ranges or withhold certain information as a trade secret, so it may need to be supplemented by supplier details.
Prepare a short application summary:
- Fluid information: Product names, current SDSs, and relevant process-water analyses
- Exposure conditions: Concentration ranges, fluid temperatures, and expected contact time
- Site operation: How a release would be detected, recovered, and cleaned up
- Proposed liner: The exact product and configuration being considered
Send this summary to the liner supplier with the SDSs and supporting analyses. The SDS helps describe the exposure; compatibility still needs to be checked against the specific liner.
Check Where a Release Could Happen
Consider equipment that doses a treatment chemical into water. The process may use a diluted solution, while the supply container holds the concentrated product. A leak from that container or its connection could reach the liner before dilution occurs.
A review based only on the process concentration would miss that exposure. Include both forms of the product and the expected recovery time in the compatibility discussion. Check the existing recommendations again before changing treatment products, cleaners, or water sources.
Evaluating GroundGuard for Your Application
AssetGuard’s GroundGuard pre-sprayed polyurea liner combines a geotextile substrate with our proprietary modified polyurea coating. An automated application process provides consistent coverage, and the product is engineered and tested to resist tearing, puncturing, and many chemicals.
When you’re considering GroundGuard, bring our team the fluid details and exposure conditions. We’ll discuss the application with you, including the chemical information and the physical demands on the liner. Product information should be reviewed against your intended use before selection.
Falcon Technologies supports installation and servicing of AssetGuard containment systems. If an existing liner needs attention, our containment reline services include assessment, surface preparation, and liner replacement or overlay depending on the application. Review the exposure conditions when planning that work, especially if the facility’s chemicals have changed.
Frequently Asked Questions About Chemical Resistance
Is chemical resistance the same as impermeability?
Impermeability concerns passage through a barrier; chemical resistance concerns how exposure affects the material. Consider a liner’s barrier properties alongside its suitability for the chemicals and conditions involved.
Does a chemical resistance rating cover mixtures?
A result for an individual chemical doesn’t establish suitability for every mixture containing it. Give the supplier the available composition information and ask whether the evidence covers the mixture and its expected exposure.
Choose a Liner Around Your Site Conditions
Keep the supplier’s recommendations and any use limitations with your containment records. When site chemicals or operating conditions change, those records give your team a basis for deciding whether another review is needed.
AssetGuard and Falcon Technologies can help you evaluate GroundGuard for a new installation or an existing containment area.