Isinglass advantageous in situations where minimal use of water is desired for the parchment as the isinglass can be reactivated with an ethanol-water mixture. It also has a greater adhesive strength than many other adhesives used for parchment repair. Isinglass Isinglass () is a substance obtained from the dried swim bladders of fish. It is a form of collagen used mainly for the clarification or fining of some beer and wine. It can also be cooked into a paste for specialised gluing purposes. Its origin is from the obsolete Dutch "huizenblaas" – "huizen" is a kind of sturgeon, and "blaas" is
Tonda Wildlife Management Area the subject of poaching by people from neighbouring Papua Province, Indonesia. Local people also harvest and sell a number of wildlife resources to merchants on the other side of the border, including deer meat and antlers, candlenut, the plastra of freshwater turtles, shark fins, saratoga ("Scleropages jardinii") fingerlings and the dried swim bladders of certain fish. Tonda Wildlife Management Area The Tonda Wildlife Management Area is a wetland of international importance and the largest protected area in Papua New Guinea. It is located in the south-western corner of the Western Province and is contiguous with Wasur National Park of Indonesia.