A good rule of thumb is: 1  for difficult separations (Î´CV â¤ 1) use up to 100 g (~200 mL) of silica gel per gram of compound to be purified (1% load) 2  for normal separations (1 â¤ Î´CV â¤ 5) use from 20 to 90 g (~40-180 mL) of silica gel per gram of compound to be purified (2-9% load)
Typical costs: 1  According to the Academy of Managed Care Pharmacy , insulin pumps cost between $4,500 and $6,500 for individuals without insurance. The price varies depending upon the features, brand and size of the pump. 2  Some insurance plans will cover the cost of the pump.
1 Taking into consideration both the cost of replacing the oil pump and the cost of labor, the average oil pump replacement can be anywhere from $300 to $800, depending on the type of labor needed as well as on who does the installation/repair service.2  Without professional help, it can cost around $50 to $150 for repairs. Taking into consideration both the cost of replacing the oil pump and the cost of labor, the average oil pump replacement can be anywhere from $300 to $800, depending on the type of labor needed as well as on who does the installation/repair service.