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 For patients without health insurance, medication costs $200-$500 or more a month for a multi-drug regimen that could include other classes of oral medications. 2  Insulin pumps cost between $4,500-$6,500 for individuals without insurance. 3  The price varies depending upon the features, brand and size of the pump. For patients not covered by health insurance, it costs $4-$100 per month for metformin, the most commonly prescribed first-line diabetes drug for Type 2 diabetics. 2  Metformin decreases the amount of glucose absorbed from food and produced by the liver and heightens the body's response to insulin.