Uploaded September 2019 | Updated September 2026, 2 weeks ago

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In this video, I compare genuine Amtech flux purchased from Amazon with a fake Amtech NC-559 flux ordered from AliExpress. You'll see a side-by-side test of performance, consistency, smell, label differences, and behavior during soldering.
What’s tested: Real NC-559-ASM-TF flux, Suspected fake NC-559 from China, Amtech 4300 and LF-4300-TF samples. Fake flux can cause PCB damage, corrosion, and unreliable solder joints — watch before you buy!

Affiliate links:
Amtech FLux:
amzn.to/42NURBB
https://alii.pub/7c0ja9
High Purity Rosin Flux:
amzn.to/4977tH9
https://alii.pub/72wutr

Soldering/Repair Mat:
amzn.to/48w5GvN
http://alii.pub/6g41jp
Solder Wick:
amzn.to/3KqR1YL
https://shp.pub/79z03a

Basic Soldering kit:
amzn.to/47Vizxi
https://alii.pub/7c0ij8

Support my project:
via Amazon: amzn.to/3Kw6OFt
via PATREON: patreon.com/2013ElectronicsComputers

Monetize your Clicks and Downloads: publisher.linkvertise.com/ac/18339
youtu.be/MLxm3Sm8ZFg

#AmtechFluxComparison #RealVsFakeFlux #AmtechNC559 #AliExpressFluxReview #GenuineAmtechFlux #SolderingFluxTest #Flux4300 #FluxLF4300TF #FakeAmtechWarning