1. Why is chemical resistance so important for lab workbenches?
Laboratory workbenches are often exposed to corrosive acids, solvents, alkalis, and high temperatures. Without proper chemical resistance, surface materials may degrade, discolor, crack, or even release toxic gases, endangering worker safety and shortening equipment life.
2. What materials are best for chemically resistant lab workbenches?
Common high chemical resistance materials include:
- Epoxy resin: durable, acid, alkali, and heat resistant (suitable for ordinary labs)
- Phenolic resin: lightweight, chemical and moisture resistant (suitable for dry labs)
- Stainless steel: great for biological or cleanroom environments
- Ceramic: heat and acid resistant, suitable for high temperature labs
- High pressure laminate (HPL): economical, but poor tolerance to harsh reagents
3. How to test if a countertop is truly chemically resistant?
Manufacturers usually perform chemical spot tests based on SEFA 8M or ASTM D543 standards.
Ask the supplier for a chemical resistance test report or certificate based on these standards.
4. How can I make my lab bench more chemically resistant?
- Apply a protective coating: Use a chemical-resistant polyurethane or epoxy coating for increased durability
- Use spill trays or liners: Especially under corrosive containers or equipment
- Clean up spills promptly: Even corrosion-resistant surfaces degrade over time if exposed for too long
- Avoid abrasive cleaners: They can damage the protective layer of the surface
5. What certifications or standards should I look for?
Reputable lab furniture should meet the following standards:
- SEFA (Scientific Equipment and Furniture Association) standards, especially SEFA 8M for cabinets and countertops
- ISO 11896 (Standard for Testing Surfaces for Chemical Resistance)
- Material Safety Data Sheets (MSDS) for detailed chemical resistance information