Laboratory calculator
10 mg vial BAC Water Calculator
Worked example
A 10 mg vial brought to 5 mg/mL takes 2 mL of bacteriostatic water, because water volume is vial mass divided by concentration. 2 mL is a default; change the target concentration to recalculate.
BAC water calculator
- Bacteriostatic water to add
- 2 mL
- Resulting concentration
- 5 mg/mL
A desired concentration takes priority; leave it empty to use target amount and units instead.
How it works
Water volume = vial mass / target concentration: 10 mg / 5 mg/mL = 2 mL. The 2 mL shown is a default; change the target concentration to recalculate. Any volume above the 3 mL vial capacity is flagged.
Frequently asked questions
How much BAC water goes in a 10 mg vial for 5 mg/mL?
Divide the vial mass by the concentration you want: 10 mg / 5 mg/mL = 2 mL. A default of 2 mL gives 5 mg/mL; change the target concentration to recalculate.
Does 2 mL fit in a standard 3 mL vial?
Yes. 2 mL is within the 3 mL vial capacity used by default; the calculator flags any volume above it.
What water volume gives 1 mg/mL for a 10 mg vial?
10 mL (10 mg / 1 mg/mL), which exceeds the 3 mL vial capacity, so a higher concentration is needed.