Plain-language reference

BAC water glossary

Keep the number and its unit together. These definitions explain label language and the calculator's inputs. They do not select a product, dose, preparation method or treatment.

Animal study

A test in animals under set conditions. Its results may not carry over to people.

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Bacteriostatic

Slows the growth of bacteria. It does not mean all germs have been removed or that no germs can enter later.

Limits of a product label and calculator

Bacteriostatic water

Water with an added chemical that slows the growth of bacteria. The exact label tells you what is in it. The name does not prove it can be mixed with another product.

Ingredients and labeled purpose

Batch report / COA

A report about a sample from one batch. It does not prove a health benefit.

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Benzyl alcohol

A chemical added to some water products to slow the growth of bacteria. Check how much is listed on the label. It does not remove all germs or prove that a later mixture is free of them.

Ingredient versus finished product

Cell

A tiny living part of tissue. A cell takes in materials, does chemical work and responds to its surroundings.

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Cell study

A test on cells grown outside the body. It is not a trial in people.

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Concentration

How much is in each amount of liquid. For example, 12 mg spread evenly through 4 mL gives 3 mg in each mL. The liquid added and the final liquid amount may differ.

Calculate from a known concentration

Diluent

A liquid used to dissolve a substance or spread it through more liquid. Adding water to juice is a simple example. That does not tell you which liquid works with a lab sample.

Compare water-product labels

Enzyme

A protein that helps turn one chemical into another more quickly, like helping break a large piece into smaller pieces.

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Hormone

A chemical message made in one place that can change what cells do somewhere else.

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Hypothesis

An idea that still needs testing.

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Lyophilization

Freeze-drying: freezing a material, then removing water to leave it dry. The powder still needs its own storage and handling instructions. The word does not tell you how long it lasts.

Interpreting label information

Microgram (mcg or μg)

A unit of mass that is smaller than a milligram. One mg has 1,000 mcg. For example, 125 mcg equals 0.125 mg. The letters mcg and the symbol μg mean the same unit.

Formulas and precision limits

Milligram (mg)

A small unit of mass: how much material there is. A gram has 1,000 mg. One mg has 1,000 mcg. To find mL, you also need to know how much material is in each mL.

Convert mass units

Milliliter (mL)

A unit for how much liquid there is. A liter holds 1,000 mL. To find how many mg are in that liquid, you also need to know the amount in each mL.

Convert U-100 volume units

Molecule

A tiny group of atoms joined together. Water is made of water molecules. Different groups can do different jobs.

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Peptide

A short chain of amino acids. Amino acids are small chemicals that join together, like beads on a string.

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Protein

A chain of small building blocks folded into a shape that does a job, such as carrying a message or helping a reaction.

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Receptor

A protein that starts steps inside a cell when a matching chemical attaches. It can be on the cell’s surface or inside it.

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Reconstitution

Adding the liquid named in the instructions to a dry product that needs it. The product instructions must name the liquid and the final amount of liquid. A calculator cannot choose them.

Reconstitution and concentration are different questions

Sterile Water for Injection

A specific labeled water product. Unlike BAC water, it has no added preservative to slow bacterial growth. It is also different from drinking water or ordinary distilled water. Check the full label.

Sterile water versus bacteriostatic water

Subcutaneous

Below the skin. This word names a location. It is not advice to use a product that way. This website does not teach how to give an injection.

Website scope and limitations

U-100 scale

A volume scale where 100 units equals 1 mL. So 10 units equals 0.1 mL. It does not tell you the amount in mg. Product IU are different: they measure an effect in a standard test, not liquid volume.

Convert U-100 units and mL