How much bacteriostatic water for a 6 mg B7-33 vial?

The amount of water does not change how much B7-33 is in the vial; it sets the concentration. With 1 mL a 6 mg vial is 6 mg/mL, with 2 mL it is 3 mg/mL and with 3 mL it is 2 mg/mL. More water makes each unit weaker, so a given amount takes more units to draw.

How many mcg are in one unit of a 6 mg B7-33 vial?

With 2 mL of water, one unit on a U-100 syringe holds 30 mcg (3,000 mcg per mL divided by 100). The table above gives the figure for other vial sizes and volumes.

Is this a B7-33 dosage calculator?

It converts between amounts, volumes and syringe units for B7-33; it does not suggest how much to use. The B7-33 guide lists the doses used in published studies, with their sources.

What size are B7-33 vials?

Across 64 listings in our directory, the most common sizes are 6 mg, 2 mg, 10 mg, 50 mg. Sizes and prices by store are on the B7-33 price page.

How many units are in 1 mL on an insulin syringe?

A U-100 insulin syringe holds 100 units per mL, so 1 unit is 0.01 mL.

Tool · B7-33 reconstitution arithmetic

B7-33 dosage calculator

Pick a B7-33 vial size, enter the bacteriostatic water added and, if you want, an amount per draw. The calculator gives the concentration and how many units that is on a U-100 insulin syringe. It does arithmetic only and does not suggest an amount.

U-100 syringes · 100 units = 1 mL · 1 mg = 1,000 mcg

Concentration

3 mg/mL

30 mcg per unit on a U-100 syringe · 300 mcg per 0.1 mL

Enter an amount per draw to see how many units it is and how many draws the vial holds.

Not medical advice

This tool converts between amounts, volumes and syringe units. It is not a recommendation to use B7-33 or a guide to how much to use, and it cannot tell you whether a product is what its label says. For the amounts used in research, with sources, see the doses used in published B7-33 studies. Disclaimer

B7-33 vial sizes stores list

From 64 active B7-33 listings of 100 mg or less in our directory. The buttons above use these sizes.

6 mg21 listings
2 mg18 listings
10 mg9 listings
50 mg6 listings
5 mg3 listings
20 mg2 listings

Compare B7-33 prices by supplier

Worked example

A 6 mg B7-33 vial with 2 mL of bacteriostatic water is 3 mg/mL (3,000 mcg/mL). One unit on a U-100 syringe is 0.01 mL, so each unit holds 30 mcg. To find how many units an amount is, divide the amount in mcg by 30.

Read more about bacteriostatic water and storing a mixed vial, or the B7-33 guide.

B7-33 concentration by vial size and water added

mcg per unit on a U-100 syringe. Read across for more water, down for a larger vial.

Vial	1 mL water	2 mL water	3 mL water
2 mg	20 mcg/unit · 2 mg/mL	10 mcg/unit · 1 mg/mL	6.7 mcg/unit · 0.67 mg/mL
5 mg	50 mcg/unit · 5 mg/mL	25 mcg/unit · 2.5 mg/mL	16.7 mcg/unit · 1.67 mg/mL
6 mg	60 mcg/unit · 6 mg/mL	30 mcg/unit · 3 mg/mL	20 mcg/unit · 2 mg/mL
10 mg	100 mcg/unit · 10 mg/mL	50 mcg/unit · 5 mg/mL	33.3 mcg/unit · 3.33 mg/mL
20 mg	200 mcg/unit · 20 mg/mL	100 mcg/unit · 10 mg/mL	66.7 mcg/unit · 6.67 mg/mL
50 mg	500 mcg/unit · 50 mg/mL	250 mcg/unit · 25 mg/mL	166.7 mcg/unit · 16.67 mg/mL

Questions

How much bacteriostatic water for a 6 mg B7-33 vial?: The amount of water does not change how much B7-33 is in the vial; it sets the concentration. With 1 mL a 6 mg vial is 6 mg/mL, with 2 mL it is 3 mg/mL and with 3 mL it is 2 mg/mL. More water makes each unit weaker, so a given amount takes more units to draw.
How many mcg are in one unit of a 6 mg B7-33 vial?: With 2 mL of water, one unit on a U-100 syringe holds 30 mcg (3,000 mcg per mL divided by 100). The table above gives the figure for other vial sizes and volumes.
Is this a B7-33 dosage calculator?: It converts between amounts, volumes and syringe units for B7-33; it does not suggest how much to use. The B7-33 guide lists the doses used in published studies, with their sources.
What size are B7-33 vials?: Across 64 listings in our directory, the most common sizes are 6 mg, 2 mg, 10 mg, 50 mg. Sizes and prices by store are on the B7-33 price page.
How many units are in 1 mL on an insulin syringe?: A U-100 insulin syringe holds 100 units per mL, so 1 unit is 0.01 mL.

Working with a different product? Use the general peptide calculator.