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.
The approximate yearly total for pumping is $2500. The approximate yearly total for for MDI is $900. Based on this rough calculation, if doctor visits average $1000 a year, diabetes has cost me $23,000 to $50,000 (after insurance) over the last 25 years of my life. Living on a fixed income, I canât help but think about where else that money could have gone.