Just note that the tube is made from acrylic & is difficult to glue into PVC & PVC is what 99% of fittings are made from.nelson said:does it have to be ridged black ?.
if not,
http://stores.ebay.co.uk/Clear-Plastic- ... 34.c0.m322
http://stores.ebay.co.uk/Clear-Plastic- ... 34.c0.m322
Fine for spray bars or internal realtors but you need to think hard about using acrylic to build a external reactor.
You can buy clear PVC tube as well but usually only in long expensive lengths!