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.
Boric Acid & Borate Insecticides. - Boric acid is an effective, low toxicity, natural insecticide -. Summary: Borate (borax) is a mineral salt of boric acid and a very effective insecticide and wood preservative. It can be used as a powder, incorporated into baits, or applied to building materials.