Works good. Just make sure you sand, jitterbugger the alum. I put some alum. bar stock in my home made tank as filler (so the liquid would cover my parts) and they did not take the coating because they had the years old finish oxide.

I follow the directions - the parts come out perfect, every time.

Works well. Obviously works better on brushes Ali and if soaked. Takes on a nice golden color, a little less when Alcoa’s is not scuffed.

I use this product all the time, as I am a aircraft paint shop. Good product

Sure it will will work, but I don’t have any alumiprep!

Great marking ability! Gives darkest color I’ve ever seen, haven’t had any issues!

Great marking ability! Gives darkest color I’ve ever seen, haven’t had any issues!

Used to prep machined aluminum parts prior to painting. The process went smoothly and the results were superb.

Quick service, arrived in two days!

The jug left over from building the wings over a year ago lost its potentcy. The new bottle was very strong for the first batch of parts dipped and then toned down to the mild gold tint as subsequent parts were dipped in the tub.

We dip our parts- provides a nice straw gold conversion coating-monitor closely it is quite concentrated.

Leaves aluminum with the golden coloration as described and protects the surface from weather.

Done what was expected.

Works great. This is already diluted. So no need to thin with water. Apply liquid directly. Turns metal to a gold/bronze color. Wont rub off easily. Doesnt damage anodized surfaces either

Great product for corrosion protection it does have a shelf life and when ordering you need to be sure it a newer batch

used it on boat outdrive .Didnt quite turn to the colour as advertised. Hard to tell where the coating was.

Order received in timely manner, but Certificate of Compliance was not included with the shipment, which caused the order to be delayed in our Receiving Dept.

Good product but has shelf life and you cannot reactivate it....dont buy more than you need. Shipping is expensive because it is a hazmat material. Thanks UPS

Product treatment to aluminum is spotty. Despite my efforts to preclean the aluminum (including alkaline detergent wash & scrubbing with abrasive pad, followed with metalprep treatment), the coating is spotty. There are areas where the coating appeared to coat with a frenzy and are dark orange, and other places where there is no coloration at all. The dark orange parts rub off on wiping to reveal untreated metal. After this solution is used some, this frenzy stops, but there are still uncolored spots. There needs to be a better explanation of the chemistry, and replenishers to permit using up more of the dichromate (to reduce chemical waste).