How to Choose Solvents and Vials for Peptide Work

What to check before ordering

We supply lyophilized research peptides in 5 mg and 10 mg vials alongside bacteriostatic water and sterile 10 mL glass vials. Before you order consumables, check four things: the stated volume, the closure, the lot number and the storage conditions on the label.

Those four items decide whether a reagent can be filed against a lot record. Volume tells you how many vials a bench task consumes. The closure tells you whether the vial pairs with the septum and seal your protocol already specifies. The lot number ties the item to a certificate of analysis. Storage conditions tell you where the item sits between delivery and use.

Everything in our Lab Supplies catalogue is listed with volume, closure and lot marking so a purchasing officer can compare items without contacting us first.

Volume and vial count

Bacteriostatic water and empty vials are ordered by volume and by count, not by weight. Match both to the scale of the work in front of you.

Two figures matter on the requisition:

• Stated volume per unit. Our sterile glass vials are 10 mL. A 10 mL vial has headspace above any liquid it holds, so usable volume is always less than nominal volume.
• Units per order. Small labs that log every reagent tend to order in the quantity they will open within a defined window. Ordering fewer units more often keeps fewer open lots on the shelf.

Our peptide vials are supplied at 5 mg and 10 mg of lyophilized material. The mass in the peptide vial and the volume of the solvent are separate line items on a purchase order, and they carry separate lot numbers. Record both.

Prices across the catalogue run from $14.99 to $69.99 CAD, quoted in Canadian dollars. Consumables sit at the lower end of that range, and GHK-Cu 50 mg sits in the Research Peptides listing at a larger fill mass than our standard 5 mg and 10 mg vials.

Closure, septum and seal

A vial is only as useful as its closure. Check three parts of the closure before ordering.

1. Neck finish

The neck finish determines which stoppers and caps fit. Confirm the finish on the product listing matches the crimper, decapper or hand seal your bench already holds. Mixed finishes in one freezer box create avoidable errors.

2. Septum material

The septum is the surface a needle or pipette tip passes through. Note the material on the listing and keep it consistent within a study so that the same consumable appears on every record.

3. Seal integrity on arrival

Inspect the seal when the parcel is opened. Note any deformed cap, loose crimp or cracked glass in the receiving log against the lot number before the item is placed in storage. A short receiving note is easier to reconcile later than a memory.

Glass is worth a second look under light. Check the base and the shoulder for chips. Clear glass also lets you confirm, visually, that a lyophilized cake is present and intact in a peptide vial before anything else happens.

Lot traceability on every item

Traceability is the reason we print a lot number on the label. Each lot of peptide we sell carries a downloadable certificate of analysis with HPLC and mass-spectrometry data, produced by third-party testing. Purity is reported by HPLC, and typical specification language reads ≥98% by HPLC.

When you receive an order, capture these fields in your reagent log:

Field	Where it comes from
Item name and quantity	Vial label, e.g. 5 mg or 10 mg
Lot number	Lot number on the label
Purity and method	Certificate of analysis, HPLC
Identity confirmation	Certificate of analysis, mass spectrometry
Date received	Your receiving record
Storage location	Your freezer or shelf map

File the certificate against the lot number, not against the order number. Orders get split and consolidated. Lot numbers do not.

Consumables deserve the same discipline as the peptide itself. If a bench observation later needs to be traced, having the solvent lot and the vial lot recorded alongside the peptide lot narrows the review quickly.

Storage conditions and the cold chain

Storage is a specification, not an afterthought. Read the storage line on the label and store the item accordingly from the moment it is received.

Lyophilized peptides are shipped in cold-chain packaging with desiccant. Desiccant is there because moisture is the variable that lyophilized material is least tolerant of. Keep the desiccant with the vials until the vials are placed in their final storage location.

Practical points for a receiving bench:

• Unpack cold-chain parcels promptly and move vials to their designated storage without a detour.
• Keep vials upright in a rack or box so labels stay readable and lot numbers stay legible.
• Do not remove or overwrite the original label. Add your own internal sticker beside it if your system requires an internal identifier.
• Store empty sterile vials and bacteriostatic water separately from opened lots so unopened stock stays unambiguous.

Label legibility is part of storage. Frost, condensation and marker bleed all make a lot number harder to read at the point when it matters most.

Ordering consumables with peptides

Order solvent and vials on the same requisition as the peptide when you can. One order means one parcel, one tracking number and one receiving event to log.

A short list keeps the requisition clean:

1. Peptide, with the mass stated: 5 mg, 10 mg, or GHK-Cu 50 mg.
2. Bacteriostatic water, with the volume stated.
3. Sterile 10 mL glass vials, with the count stated.

Our catalogue is priced in Canadian dollars, from $14.99 to $69.99 CAD, and ships tracked from Vancouver, British Columbia. We sell to laboratories and qualified researchers only, so purchase orders arrive from an institution, a contract research organization or a private lab rather than an individual.

If your filing system requires documentation before the parcel is opened, download the certificate of analysis for the relevant lot and attach it to the purchase record on arrival. The lot number on the label is the key that links the two.

Store lyophilized vials as marked on the label, keep the desiccant with the vials until they reach storage, and file the certificate of analysis against the lot number. For laboratory research use only. Not for human or veterinary use.