DuPont Proton Exchange Membrane Nafion N117 Membrane perfluorinated sulfonic acid ion N117 (2x2cm，5x5cm, 10x10cm, 20x20 cm)round
$10.15
Today it costs $10.15 on AliExpress. Since Oct 22, 2026, when we started tracking it, the price hasn't changed. We haven't tracked it long enough yet to say whether it's on sale.
We have tracked this product for less than a day; confirming a drop takes at least 3 days. The store advertises "was $16.92", but that is the store's own claim; we only state discounts our price history proves.
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Price history
$10.15
We started tracking this price on Oct 22. The chart takes shape over the days: we only draw prices we observed.
| Store | MILU Boutique Store |
|---|---|
| Product rating | — |
| Store rating | — |
| AliExpress category | Office & School Supplies › Printing Products |
| Recorded readings | 1 |
| First seen | 10/22/2026 |
| Last reading | 10/22/2026, 3:25:17 PM UTC |