store them under refrigeration. now, that is a direct quote (more or less) from robert tisserand. he recommends refrigerating all oils. this is not always possible, or realistic. but we strongly urge that you store the citrus rind oils, the conifers (needle oils.. fir, pine, spruce, etc.), and the "...
store them under refrigeration. now, that is a direct quote (more or less) from robert tisserand. he recommends refrigerating all oils. this is not always possible, or realistic. but we strongly urge that you store the citrus rind oils, the conifers (needle oils.. fir, pine, spruce, etc.), and the "...
using a thermal toughening process, the wall of the tubing can be prestressed which results in glass tubing with high resistance to tension and mechanical shock and with still higher resistance to thermal shock. the familiar high- quality physical and chemical properties of borosilicate glass are thus not...