Mixing Water 5 Pack (5ml)

Research overview

Mixing Water 5 Pack (5ml) is preservative-free sterile water, also listed as Purified Water, supplied as a 5ml × 5 pack. It is a laboratory diluent used to dissolve and dilute lyophilised materials and to prepare solutions for in-vitro work. It is a laboratory reagent and not a research peptide. Supplied for in-vitro laboratory use only.

Water is the most common solvent for lyophilised peptides and proteins, and sterile, preservative-free water is chosen where an added preservative could interfere with an assay. It has no buffering capacity or ionic content of its own, so the pH of a reconstituted solution depends on the dissolved material. Many laboratories reconstitute in water first and then dilute into a buffer or culture medium suited to the experiment, which can help avoid salt-induced aggregation during the first dissolution step.

In the laboratory it is used for reconstituting lyophilised standards, preparing stock solutions and serial dilutions, and as a blank or negative control in assays. Because it contains no preservative, reconstituted solutions are normally kept cold and used promptly, and sterile technique limits contamination. It is supplied as a sterile liquid in a 5ml × 5 pack.

Research areas

• Reconstitution of lyophilised materials
• Preparation of stock solutions and serial dilutions
• Preservative-free blanks and negative controls
• Cell-based assays sensitive to preservatives
• First-step dissolution before dilution into buffers

Specifications

CAS number

7732-18-5

Molecular formula

H2O

Molecular weight

18.02 g/mol

Form

liquid (sterile water, preservative-free)

Purity

≥99% (HPLC)

Also known as

Purified Water

Supplied as

5ml × 5 per vial, liquid (sterile water, preservative-free)

Storage and handling

Laboratory role: a preservative-free diluent for dissolving and diluting lyophilised materials. Store unopened vials at room temperature, away from light and heat, and use a fresh vial for each preparation once one is opened.

Certificates of analysis

Each lot of Mixing Water 5 Pack (5ml) is released with a certificate recording identity and purity. Enter the lot number printed on your vial on the lab testing page to view it.

Questions