Harvest Rate Model. In a perfusion-based process, harvest of cell culture fluid begins significantly before cell density or titer has reached a steady state. After inoculation of the bioreactor, cells grow in batch mode until a specific cell density is achieved, at which point perfusion is initiated at a low HR.
Borax (sodium tetraborate hexahydrate or sodium borate) is a naturally-occurring mineral composed of sodium, boron, oxygen and water. It has been used as a remedy for over 4000 years. Most commercially-produced borax is mined from deposits produced by the repeated evaporation of seasonal lakes. It is found in large quantities in the Western United States, in Mediterranean countries, Kazakhstan, and the Tibet region of China. Turkey is one of the largest commercial producers of borates.
Borax is used frequently in homemade laundry soap, dishwashing powders, and personal care products. The question often arises: Is borax safe to use? Borax, also known as sodium borate, sodium tetraborate, or disodium tetraborate, is a naturally occurring mineral composed of sodium, boron, oxygen, and water.(The scientific name for borax is sodium tetraborate decahydrate.) It is a white powder consisting of soft, colorless crystals that dissolve quickly in water.orax, also known as sodium borate, sodium tetraborate, or disodium tetraborate, is a naturally occurring mineral composed of sodium, boron, oxygen, and water.