- Acetate salt
- The most common salt form for research peptides. Peptides are made and purified as salts, and the counter-ion (acetate, or sometimes TFA) is part of the powder in the vial. It's one reason the measured peptide content can be lower than the total weight of powder.
- Acetic acid water
- A dilute solution of acetic acid in sterile water, usually around 0.6%. A different product from bacteriostatic water, with a different composition.
- Bacteriostatic water
- Sterile water containing 0.9% benzyl alcohol, a preservative that stops bacteria multiplying once a vial is opened. It's commonly labelled to be discarded 28 days after first opening. Bacteriostatic vs sterile water →
- Batch
- A quantity of product made or delivered together and treated as one unit. Every vial in a batch shares the same lot number.
- Blend
- A vial containing two or more peptides in fixed amounts, such as a BPC-157 and TB-500 blend. The label and certificate should state each component and its quantity.
- Box of 10
- The standard wholesale unit for research peptides: ten vials of the same compound and strength. Usually priced lower per vial than single vials. Wholesale pricing →
- Certificate of analysis (COA)
- A laboratory document reporting what a sample was tested for and what was found, typically identity and purity. A COA describes the sample tested, which is why who produced it and which batch it relates to matter. How to spot a fake COA →
- Content (peptide content)
- How much of the named peptide is actually present in the vial, usually in mg. Different from purity: a vial can be high purity and still contain less peptide than the label states. Purity vs content →
- Dimer
- Two copies of the same peptide molecule joined together. It shows up as an impurity on some certificates. What is a dimer? →
- HPLC
- High-performance liquid chromatography. A lab method that separates the components of a sample, used to measure purity: the share of the sample that is the target peptide. HPLC, LC-MS and MS explained →
- Human Medicines Regulations 2012
- The UK regulations that define what counts as a medicinal product. A product can be treated as a medicine because of how it's presented, which is why research peptide suppliers make no health claims. Are peptides legal in the UK? →
- Independent laboratory
- A lab that tests samples for anyone, at published prices, with no stake in the result. Janoshik is the best-known example in the research peptide market. Who actually tests peptides? →
- Janoshik
- An independent analytical laboratory in the Czech Republic, widely used to test research peptides. Its reports carry a task number and key that can be checked on its own verification site. Our testing policy →
- LC-MS
- Liquid chromatography with mass spectrometry. Separates a sample and measures the mass of what's in it, which confirms identity: that the peptide is the one on the label. HPLC, LC-MS and MS explained →
- Lot number
- A code printed on each vial that ties it to its batch. It's what lets a test result, a certificate or a recall be matched to the vial you actually have. Lot numbers explained →
- Lyophilised
- Freeze-dried. Most research peptides are supplied as a lyophilised powder (sometimes called a cake) in a sealed vial, which is more stable than a solution. How to store research peptides →
- MHRA
- The Medicines and Healthcare products Regulatory Agency, the UK regulator for medicines and medical devices.
- Purity
- The percentage of a sample that is the target peptide, as measured by a method such as HPLC. It says nothing on its own about how much peptide is in the vial. Purity vs content →
- Reconstitution
- Dissolving a lyophilised powder in a liquid diluent so it's in solution. Reconstituted peptides are generally less stable than the dry powder and are stored cold.
- Redacted certificate
- A certificate with some details blacked out, usually the manufacturer's name, so a reseller's source isn't exposed. Normal commercial practice provided the lab is named and the results are untouched. Redacted certificates →
- Research use only (RUO)
- Supplied for laboratory research, not for human or veterinary use. In the UK it's a condition of lawful sale, and it means a supplier can't advise on use, dosing or effects. Are peptides legal in the UK? →
- TFA salt
- Trifluoroacetate, a counter-ion left over from some peptide purification processes. Some suppliers exchange it for acetate. Like acetate, it counts toward the powder's weight but isn't peptide.
- Trade account
- An account for resellers buying wholesale. At Zenic Labs it means tiered trade discounts and optional own-brand labelling, under a signed trade agreement. Wholesale and trade →
- White label (private label)
- Product supplied with the buyer's own branding printed and applied by the supplier, so it arrives ready to sell under the buyer's name. White label peptides in the UK →
All products we sell are supplied for laboratory research use only and are not for human or veterinary consumption.