Compatibility Rating
📊 Note: Lactic Acid resistance varies by concentration. Data available for: 3 %, 80 %, 85 %. Search for specific concentrations →
Why is FEP resistant to Lactic Acid?
FEP shows excellent resistance to Lactic Acid due to its fully fluorinated structure similar to PTFE, offering near-universal chemical resistance.
⚠️ When NOT to use FEP
Avoid using FEP (Fluorinated Ethylene Propylene) with molten alkali metals and fluorine gas. Suitable up to 200°C.
Comparison Table — All Materials for Lactic Acid
| Material | 20°C | 50°C |
|---|---|---|
| HDPE | A | A |
| LDPE | A | A |
| PP | A | B |
| PTFE | A | A |
| PVDF | A | C |
| FEP | A | A |
| ECTFE/ETFE | A | B |
| EPDM | C | D |
| Viton (FPM) | A | A |
| NBR | A | D |
| Silicone | NR | NR |
| SS 316 | A | B |
| SS 304 | A | C |
| Aluminium | A | NR |
| PVC Rigid | B | C |
| PVC Flexible | B | C |
| PMP | A | B |
| Polystyrene | B | B |
| SAN | A | A |
| Polycarbonate | A | B |
| PETG | NR | NR |
| Acetal (POM) | C | D |
| Nylon (PA) | C | D |
| Polysulfone | A | A |
A=Excellent · B=Good · C=Fair · D=Poor · NR=No Data
🌡️ Temperature Note
Good resistance at both 20°C and 50°C. Maximum service temperature for this material is 200°C — above this, degradation risk increases significantly.
🔄 Better Alternative?
Consider: PTFE for higher temps. View all materials for Lactic Acid →
FAQ
Is FEP resistant to Lactic Acid?
FEP has Excellent (A) resistance to Lactic Acid at 20°C.
Can I store Lactic Acid in FEP?
Yes, FEP is rated A for Lactic Acid.
📊 Note: Lactic Acid resistance varies by concentration. Data available for: 3 %, 80 %, 85 %. Search for specific concentrations →