Laboratory calculator
Cartalax Units Chart (20 mg vial)
Worked example
For 20 mg of Cartalax, the chart row for 2 mL shows 10 mg/mL: 250 mcg is 2.5 units and 500 mcg is 5 units. The 5 mL row drops the concentration to 4 mg/mL and moves 250 mcg to 6.25 units.
Units chart
| Water added (mL) | Concentration (mg/mL) | Units on a U-100 syringe, by target amount (mcg) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 50 | 100 | 250 | 500 | 750 | 1000 | 1500 | 2000 | 2500 | 5000 | ||
| 1 | 20 | 0.3 | 0.5 | 1.3 | 2.5 | 3.8 | 5 | 7.5 | 10 | 12.5 | 25 |
| 2 | 10 | 0.5 | 1 | 2.5 | 5 | 7.5 | 10 | 15 | 20 | 25 | 50 |
| 3 | 6.6667 | 0.8 | 1.5 | 3.8 | 7.5 | 11.3 | 15 | 22.5 | 30 | 37.5 | 75 |
| 5 | 4 | 1.3 | 2.5 | 6.3 | 12.5 | 18.8 | 25 | 37.5 | 50 | 62.5 | 125 |
How it works
Each cell is units = target amount in mg / concentration x 100, where concentration = vial mass / water volume. For 20 mg in 2 mL the concentration is 10 mg/mL, so a 250 mcg example amount is 0.25 / 10 x 100 = 2.5 units.
Frequently asked questions
How many units is 250 mcg of Cartalax from a 20 mg vial?
It depends on the water volume: 1.25 units with 1 mL, 2.5 with 2 mL, 3.75 with 3 mL and 6.25 with 5 mL in a 20 mg vial.
Why does adding more water change the unit reading?
More water lowers the concentration, from 20 mg/mL at 1 mL to 4 mg/mL at 5 mL, so the same target amount occupies more volume and reads more units.
How much Cartalax is in one unit on a U-100 syringe?
One unit is 0.01 mL. At 10 mg/mL (the 2 mL row) one unit holds 100 mcg of Cartalax.
Available from Pepcore
Supplied as research material for laboratory use only.
- Cartalax Research Material – 20mg 20 mg$54.99On backorder at PepcoreShop at PepcoreCoupon code
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