But reading the back labels with all its warnings of
wearing rubber gloves, and goggles, and that it contains: sodium
meta-silicate ( I don't know what this is!) I think this might not
be the right powder. It says it is a all purpose heavy duty
cleaner. Brand is LANDMARK, made in USA. Can someone tell me if
this is the right thing to make up the PRIPPS flux. Also, if so, is
it really that dangerous to use in my studio??
Sharon, Sodium Metasilicate is NOT TSP. It's a somewhat similar, in
function, alkaline cleaning agent. It will be equally fine if you
plan to wash down your walls prior to painting them. But it will NOT
work if you plan to make Prips flux (note the spelling with only one
As for safety in the workshop, c'mon, girl. You know about safety
warnings on boxes, don't you? They have to protect themselves
against every idiot with a lawyer on the planet. Just because they
suggest all that stuff doesn't mean the cleaner is some sort of WMD.
It IS quite alkaline, and if you leave your hands soaking in it for
a while, you'll not like what it does to your skin. make you look
all old and wrinkly for a few days. Might even be a bit irritating.
Get it on especially tender skin, and it will definitely irritate.
But don't go overboard. It's not all that much different from any
other strong detergent, for which you might also want to wear dish
washing gloves. Other worries on the box is that if you spread the
dry dust into the air, and breath it in, the alkali can burn the
lungs. Again, this is similar in risk to any number of other
household cleaners. So too is their worry that you'll splash the
stuff in your eyes. All in all, this isn't a childs toy. But your
toilet cleaners are a lot more dangerous than either this fake TSP,
or the real stuff.
As to prips flux, it's also not a childs toy. All three chemicals
in it are toxic. What that means is that you should not drink it or
spray it directly into your face. It doesn't mean you have to get
all paranoid about actually using it. It's no worse than any other
soldering flux in your shop, and a good deal gentler and safer than
some of them. A bit on your skin will not do any harm.
As to buying TSP, you might need a chemical supplier, if the ACE
store doesn't have it. Or try a more specialized store that sells
house paint, if there are such where you are. Preparing surfaces for
painting is the single most common public use for the stuff.
Wherever you buy it, the ingredient must be trisodium phosphate, or
if from a chemical supply, you could also buy disodium phosphate or
monosodium phosphate. Any of these three chemicals will work. Sodium
metasilicate, as you can tell by the totally different name, is not
related chemically, and though it works to clean the walls, it is
not usable for prips flux.