General information
Each usage has its specific glue.
Glue for PVC pipe is completely different from the glue for PVC sheets. The repair kit for the flexible water tank includes the glue for PVC sheet, glue for PVC pipe cannot replace it.
"Cyanolit" glue is very dangerous and must be used carefully.
Wood glue must be waterproof, in case of outdoor use.
Most common thinner is the trichlo-ethylene, caution: vapour is toxic.
Be careful of bad quality copies of well-known trademarks.
Buy in well sealed small containers. Test several pieces in case of large quantities.
Specifications
Glue as per the description, of good quality, from certified manufacturers according to national or ISO standard.