These things are very strong acids, please be careful not to splash it on your skin or clothes or breathe it in.

With all the pea gravel works in Udon, along with all the rainy-season-algae problems, seems like someone could make some money with a high quality gas powered pressure washer and cheap labor. Anyone know of such a business?

All chemical manufacturers have a MSDS

Material Safety Data Sheet.

Same format . Storage. Transport. First Aid etc

Google MSDS Hydrochloric Acid. Huge numbers to review and all worth reading if your going to dabble with it

i always buy at the pool shop outside thai watsadu , you indeed have to be careful working with acid , but do not over dramatize it , fe you will not get burned from the fumes ..., some people always make everything way to complicated ...,things are easy if you yourself can keep them easy .... this also go's for other things , fe immigration udon :-"

Just for my benefit, is this sort of thing what you guys call Pea Gravel?

Yes. For me anyway.

Got a few broken bits where the metal runner of the gate meets the " pea gravel "

Nigglyb wrote:Just for my benefit, is this sort of thing what you guys call Pea Gravel?

That's it Nigglyb! I included a photo of it in my original post on page one, so perhaps you didn't see it. With all the previous posts about the dangers of using the acid I decided to try the Spa Clean solution that I bought at Home Pro today for 169 baht for 1 litre and it's mixed 1 to one with water, but it only contains 17.5% hydrochloric acid. I will let you all know how it works. I don't think I will get much cleaned with that small amount, and if it involves a lot of scrubbing then I doubt if I'll be doing much of that either. I was hoping for a solution that would just eat it right off like bleach does with mildew. To be continued after tomorrow!

kopkei wrote:i always buy at the pool shop outside thai watsadu , you indeed have to be careful working with acid , but do not over dramatize it , fe you will not get burned from the fumes ..., some people always make everything way to complicated ...,things are easy if you yourself can keep them easy .... this also go's for other things , fe immigration udon :-"

Having attended and treated approx 10 people who have died from chemical ingestion , absorbtion , topically including inhalation burns I assure you the handling and storage issues are significant.

Poor attitude lends its self to transferring the product to a 3rd party container. Not labelled or obviously incorrectly labelled.

wazza, from hydrochloric acid ? , the word says it itself , acid,so handle with care and using your brain ...you will be ok ,
fe , i always mix with water pouring it in a bucket with a little water in it all ready , holding my breath, the fumes are strong indeed so not really meant to inhale.... i do not need goggles, protective suit , or any other protection , using my clear mind only ,for all the 2 left handed people here , do not use .... be careful all...
to sf ..you will also get result with the bottle you bought as it containing also hca,but best result and no extensive scrubbing,you can easy spray the dirt out with the water hose , is diluting it yourself , but if you do not trust yourself , don't start...as info ...