I would like to buy approx’ three feet of transparent rigid pvc pipe in a diameter range of 2 - 3 inches. (not to be mistaken with transparent flexible tubing, please)
I have searched everywhere in town, that I can presume might carry such a thing, but I have had zero success!. I’ve tried Lowe’s, Home Depot, Menards, and several others. I thought maybe some of the pet stores would have what I want in the aquarium dept. Nope. I have also searched some craft stores. I’ve had no luck anywhere.
I have seen various products that employ transparent plastic piping, so it apparently exists. However, I don’t want to buy a pre-manufactured product that I do not need, simply to “harvest” the piping.
I am not totally sure, but I suspect that it is because to make it clear you must use very high purity polymers, and special additives. With a non-clear system you can use any old rubbish because it will get hidden by the colour or pigments added to colour it. Also clear plastics require no crystallinity to be present that might scatter light (many plastics are naturally crystalline to some extent). This might require special processing or formulation to prevent crystallization during processing.
These are made for the electrical/plumbing trade, which uses a standard 10 foot length for all conduit/pipe.
But if they are going to ship them to you, they have to go thru carriers like UPS, Post Office, etc., and they all have a maximum package size of 5 feet. (They could ship them via a freight company, but the price for a couple pieces wuld be outrageous.)