Reconstitution Solution (2 / 5 / 10 mL)

Contexx Research’s Reconstitution Solution is a laboratory solvent for dissolving lyophilized research peptides and reagents into working solutions. It comes in sealed 2 mL, 5 mL or 10 mL vials, ships across Canada from Mississauga, Ontario, and can be ordered with your lyophilized research materials.

Reconstitution Solution specifications

Using a reconstitution solution

Lyophilized (freeze-dried) peptides are stored dry because most peptides degrade much faster in solution, through hydrolysis, oxidation, deamidation and aggregation. Reconstitution is the step where a researcher adds a measured volume of solvent to the dry cake to make a stock solution of known concentration. A review of freezing and freeze-drying in pharmaceutical formulation explains why the dry state is more stable and what happens when the cake is redissolved [1].

Solvent choice affects how stable the solution is. Pure water suits many short peptides. Some laboratories prefer a preserved aqueous diluent when they plan to draw from a stock vial more than once. Hydrophobic sequences may need a small amount of organic co-solvent or a pH adjustment, as the peptide’s data sheet specifies. A 2022 review covers the main instability pathways for peptides and proteins in solution and the formulation strategies used to limit them [2].

Good practice is to let both the peptide vial and the solvent reach room temperature, add the solvent slowly down the vial wall, swirl gently rather than shake, label the vial with its concentration and date, and store the stock as your protocol directs, usually at 2–8 °C.

Selected references

1. Izutsu KI Adv Exp Med Biol. 2018. PubMed 30288720
2. Akbarian M et al. Pharmaceutics. 2022. PubMed 36432723

Storage and handling

Keep the vial sealed and store it upright at controlled room temperature, away from direct light, unless the label says otherwise. Once the seal is pierced, use clean technique, record the date opened on the label and discard it according to your laboratory’s practice.

Quality and testing

The Reconstitution Solution is filled into sealed vials for laboratory use. For questions about its composition or documentation, contact info@contexxresearch.ca.

Frequently asked questions

What’s included when I order Reconstitution Solution?

One sealed vial of Reconstitution Solution in the volume you select (2 mL, 5 mL or 10 mL). It contains no peptide; order your lyophilized research materials separately.

Does Reconstitution Solution come with a Certificate of Analysis (COA)?

This product is a laboratory solvent. For questions about its composition, grade or documentation, contact info@contexxresearch.ca.

How fast is shipping in Canada?

Orders are processed Monday to Friday, and most orders ship within 24 hours from Mississauga, Ontario, in secure, tamper-evident packaging. Orders placed on Friday afternoon (after the 12:00 PM ET cut-off) ship on Monday, when Canada Post resumes pickup, or on the next business day if Monday is a statutory holiday. Once your order ships, delivery typically takes 1–3 business days in Ontario and Quebec and 2–6 business days in the rest of Canada, and a tracking number is emailed to you. Orders over $250 CAD shipped within Canada qualify for free standard shipping. See our Shipping Policy for details.

How should Reconstitution Solution be stored?

Store the sealed vial upright at controlled room temperature, away from light, unless the label says otherwise.

What does “research use only” mean?

“Research use only” means Reconstitution Solution is sold only as a reference material for in-vitro laboratory and analytical research by qualified professionals. It is not for use in humans or animals, not for diagnostic use, and not a drug, natural health product, food, supplement or cosmetic.

Research use only

Reconstitution Solution is sold by Contexx Research Inc. strictly as a reference material for in-vitro laboratory research and analytical use by qualified professionals. It is not a drug, natural health product, food, dietary supplement or cosmetic. It is not intended for use in humans or animals, for diagnostic purposes, or for ingestion or any other form of administration to a living organism. Nothing on this page describes or implies any effect in humans or animals. Purchasers are responsible for handling, storage and disposal in line with applicable laws and their institution’s policies. By ordering, you confirm that you are purchasing for legitimate laboratory research and agree to our Terms and Conditions.