The lava-lamp wax sinks on cooling, so the surrounding liquid must have a density a little less than 0.9. Ordinary alcohol (ethanol) has a density of about 0.8, and a 40-50 per cent aqueous solution would have a density that could be adjusted to just below that of paraffin wax. The solid wax would then sink.
Now you know what to pack for Bora Bora you can get started. When you are done, weigh your bags. Luggage allowance for Air Tahiti inter-island flights is 20 kg/45 lb per person and strictly enforced (due to plane size). Divers may have 5kg extra. Carry on hand luggage is 3 kg/6.6lb. See more absolutely 'must know' info about flying to Bora Bora to ensure smooth Bora Bora travel.
Listed below are the countries and their price groups and weight limits for the five principal categories of international mail. Complete tables of prices are available in Notice 123, Price List. n/a = Service is not available. 1 Priority Mail Express International Flat Rate Envelopes maximum weight: 4 lbs. 2 Priority Mail International Flat Rate Service maximum weights: Flat Rate Envelopes and Small Flat Rate Priced Boxes, 4 lbs.; Medium and Large Flat Rate Boxes, 20 lbs. 3 First-Class Mail International maximum weights: Letters, 3.5 ozs.; Large Envelopes (flats), 4 lbs. Note that the heading in the maximum weight column lists both ounces and pounds (ozs. / lbs.) and that there are two numbers in the entry for each country (3.5 / 4) - this indicates that the maximum weight for Letters is 3 ...