Those look high quality, although some are pricey. They did have a couple nice kits of small travel bottles.

I've realized that my bleach and detergent comes packaged in bottles made of HD-PETE (this is plastic resin #2, in the recycling code given on the bottom of plastic bottles.) This is what most of the nalgene bottles and the tube vaults are made of, as well. So, I guess that means the tube vaults and nalgene bottles are made of the right plastic resin for storing detergents and such.