TressVita — Precision research materials
Research essentials,
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Research reagents supplied as lyophilised powder in sealed amber vials. All items are for laboratory use only and are not drugs, foods, cosmetics, or medical devices.
Details before decisions. Open any vial for product information, or ask our team about lot documentation.
Substance reference.
Physicochemical and handling data for the compounds in our catalog, with FDA Substance Registration System identifiers. Reconstitution figures describe preparing solutions for laboratory work.
Handling & storage.
Lyophilised: stable at ambient temperature for short transit; refrigerate at 4 °C for up to twelve months, or store at −20 °C for longer holds.
In solution: refrigerate at 4 °C. Do not freeze reconstituted material — freeze–thaw cycling degrades peptides. Protect all vials from light and moisture.
- Use bacteriostatic water for injection as diluent.
- Vent the vial with ~1 mL of air to relieve negative pressure.
- Introduce diluent slowly down the vial wall to limit foaming.
- Allow the solid to dissolve undisturbed. Do not shake — agitation denatures peptides.
- Record the reconstitution date on the vial.
Some peptides normally present as cloudy, viscous, or gelled once in solution. Roll gently to redisperse; discard on particulates, discoloration, or odour.
Each substance entry lists vial mass, diluent volume, target quantity, the corresponding graduation on a U-100 syringe (100 units = 1 mL), and approximate aliquots per vial.
Unit values are rounded to practical graduations and may differ from exact calculation by one or two units.
Change the diluent volume and every unit figure changes with it. Confirm vial strength and fill volume against the label before drawing.
Testing you can trace.
Every lot is assayed before release. Identity is confirmed by mass spectrometry against the expected molecular weight; purity is determined by reversed-phase HPLC with UV detection. Water content, acetate content, and endotoxin are reported where the method applies.
Certificates of analysis are keyed to the lot number printed on each vial and are available on request before or after purchase. If a lot's COA does not match what you received, contact us and we will replace it.
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