Bacteriostatic water guides
One product, explained properly. Each guide opens with the direct answer and then works through the questions behind it.
- What is bacteriostatic water? Sterile water with a bacteriostatic preservative. What the preservative does, what a multi-dose vial is, and how it differs from sterile water.
- Bacteriostatic water vs sterile water vs saline: what is the difference? The one real difference between bacteriostatic water, sterile water and saline, with a comparison table and when each is the right laboratory diluent.
- Bacteriostatic water vs saline: what is the difference? Bacteriostatic water is preserved water; saline is 0.9% sodium chloride, usually unpreserved. What each contains and how long each lasts once opened.
- What does multi-dose mean on a bacteriostatic water vial? A multi-dose vial can be entered more than once because a preservative works inside it. What that allows, what it does not, and why a limit applies.
- How long does bacteriostatic water last? Opened bacteriostatic water lasts 28 days from first puncture. Sealed, it keeps to the printed expiry. Why the limits differ and when to discard.
- How to store bacteriostatic water Where to keep bacteriostatic water before and after opening, whether it needs refrigerating, why not to freeze it, and the signs to discard a vial.
- How many draws can you take from a 10 ml vial of bacteriostatic water? A 10 ml vial gives 10 draws of 1 ml or 20 of 0.5 ml, but the 28-day in-use limit and syringe dead volume set the real count. How to plan vials for a run.
- Diluent volume and concentration: the arithmetic How the volume of diluent added sets the concentration of the solution, the units it is expressed in, and how to work back from a target.
- How to read a bacteriostatic water vial label Every field on a bacteriostatic water label and what it governs: batch number, expiry, fill volume, storage and the in-use limit.
- Handling a bacteriostatic water vial without contaminating it Keeping a multi-dose vial clean between entries: disinfecting the stopper, a fresh needle each time, and the signs a vial should be discarded.
- Bacteriostatic water vial sizes: 3 ml, 10 ml, 20 ml and 30 ml compared UK bacteriostatic water comes in 3, 10, 20 and 30 ml vials. How many draws each gives, why the 28-day in-use limit matters and where 30 ml imports fit.
- Where to buy bacteriostatic water in the UK UK pharmacies do not stock bacteriostatic water. Where it is sold, what a listing must show, typical prices per 10 ml vial and how BacLab supplies it.
- Is bacteriostatic water a medicine in the UK? No UK-licensed bacteriostatic water exists. How the Human Medicines Regulations, GB CLP, COSHH and consumer law apply to it as a laboratory reagent.