1 mg vial + 1.5 mL bacteriostatic water: units chart
A 1 mg vial mixed with 1.5 mL of bacteriostatic water holds 666.67 mcg per mL. This is a dilute mix: each unit holds only 6.67 mcg, so larger doses take up many units and may not fit a 1 mL syringe. Less water would make them smaller.
Units to draw
37.5units
Draw 37.5 units on a U-100 syringe, just below the 38-unit mark.
- Dose
- 250 mcg (0.25 mg)
- Volume
- 0.375 mL
- Concentration
- 666.67 mcg/mL (0.66667 mg/mL)
- Per unit
- 6.67 mcg (0.00667 mg)
- Full doses in vial
- 4
Show the math
- Convert the vial amount to mcgmg × 1,000 = mcg1 mg × 1,000 = 1,000 mcg
- Convert the dose to mcgmg × 1,000 = mcg0.25 mg × 1,000 = 250 mcg
- Concentrationvial (mcg) ÷ water (mL) = mcg per mL1,000 mcg ÷ 1.5 mL = 666.67 mcg/mL (0.66667 mg/mL)
- Volume to drawdose (mcg) ÷ concentration (mcg/mL) = mL250 mcg ÷ 666.67 mcg/mL = 0.375 mL
- Units to drawmL × units per mL = units0.375 mL × 100 units/mL = 37.5 units
- Amount in each unitmcg per mL ÷ units per mL = mcg per unit666.67 mcg/mL ÷ 100 units/mL = 6.67 mcg per unit (0.00667 mg)
- Doses in the vialvial (mcg) ÷ dose (mcg), rounded down1,000 mcg ÷ 250 mcg = 4 full doses
1 mg peptide with 1.5 mL bac water: units chart
Units to draw on a 1 mL U-100 syringe for common doses, calculated by this site. With this mix, the chart doses from 50 mcg to 600 mcg are easy to read and fit one 1 mL syringe. The 2 largest doses need more than 1 mL.
| Dose | Units (U-100) | Volume (mL) |
|---|---|---|
| 50 mcg | 7.5 | 0.075 |
| 100 mcg | 15 | 0.15 |
| 150 mcg | 22.5 | 0.225 |
| 200 mcg | 30 | 0.3 |
| 250 mcg | 37.5 | 0.375 |
| 300 mcg | 45 | 0.45 |
| 400 mcg | 60 | 0.6 |
| 500 mcg | 75 | 0.75 |
| 600 mcg | 90 | 0.9 |
| 750 mcg | 112.5over 1 mL | 1.125 |
| 1,000 mcg1 mg | 150over 1 mL | 1.5 |
Key numbers for this mix
- Peptide in the vial
- 1,000 mcg
- Concentration
- 666.67 mcg/mL
- Each unit on a U-100 syringe
- 6.67 mcg
- Each unit on a U-40 syringe
- 16.67 mcg
- Smallest easy-to-measure dose (2 units)
- 13.33 mcg
- Most that fits in a 1 mL syringe
- 666.67 mcg
Worked example: 50 mcg
- Convert the vial amount to mcg: 1 mg × 1,000 = 1,000 mcg
- Concentration: 1,000 mcg ÷ 1.5 mL = 666.67 mcg/mL (0.66667 mg/mL)
- Volume to draw: 50 mcg ÷ 666.67 mcg/mL = 0.075 mL
- Units to draw: 0.075 mL × 100 units/mL = 7.5 units
- Amount in each unit: 666.67 mcg/mL ÷ 100 units/mL = 6.67 mcg per unit (0.00667 mg)
- Doses in the vial: 1,000 mcg ÷ 50 mcg = 20 full doses
Draw 7.5 units on a U-100 syringe, just below the 8-unit mark. The same 50 mcg dose is 5 units with 1 mL of water and 10 units with 2 mL of water, compared with 7.5 units with 1.5 mL.
Frequently asked questions
What is the concentration of a 1 mg vial with 1.5 mL of water?
A 1 mg vial mixed with 1.5 mL of water holds 666.67 mcg per mL. Each unit on a U-100 syringe holds 6.67 mcg.
How many units is 50 mcg with a 1 mg vial and 1.5 mL of water?
It is 7.5 units on a U-100 syringe, which is 0.075 mL of the mixed liquid.
What is the smallest dose you can measure well with a 1 mg vial and 1.5 mL of water?
About 13.33 mcg, which fills 2 units on a U-100 syringe. Smaller amounts are hard to read; a vial mixed with more water spreads them over more units.
What is the largest dose that fits a 1 mL syringe with a 1 mg vial and 1.5 mL of water?
666.67 mcg, which fills all 100 units of a 1 mL U-100 syringe. Larger doses need more than one draw or a stronger mix.
How many doses does a 1 mg vial with 1.5 mL of water give?
Divide 1,000 mcg by your dose and round down: 20 full doses of 50 mcg, or 10 of 100 mcg.
Nearby vial and water combinations
See all reconstitution charts, or use the peptide calculator for any other vial, water or dose. For the reasoning behind these numbers, read How Much Bacteriostatic Water to Add to a Vial.