For laboratory research only · Not for human or veterinary use

Skip to content
Cart[0]

Calculator

Working-solution arithmetic.

Converts vial mass and diluent volume into a concentration, then a target amount into a draw. Vial mass is the catalog size of the compound you pick. Nothing here is a protocol, and no amount is recommended.

Laboratory research only · Not for human or veterinary use

Vial mass is the catalog size for this compound. It does not suggest a target amount.

Vial size

Glutathione in the catalog

Diluent volume

Volume of bacteriostatic water or other diluent added to the vial. Less liquid raises concentration.

mg

How much compound per aliquot, in milligrams. Leave blank to see concentration only.

Syringe scale

100 units = 1 mL on every insulin syringe. Smaller barrels are easier to read on small draws. Volume-only mode reports millilitres.

Concentration

750mg / mL

Enter a target amount to convert that concentration into a draw volume.

Handling

Dissolving a lyophilised cake.

Laboratory technique for reconstituting a sealed vial. It is handling, not a protocol for use, and it does not state a beyond-use date.

  1. 01/Work clean

    Use a clean bench, wash hands, and open a fresh sterile syringe or pipette for each reconstitution. Keep the stopper on the vial except while transferring diluent.

  2. 02/Swab the closures

    Wipe the rubber stoppers of the peptide vial and the diluent vial with separate alcohol swabs. Allow them to dry before puncture.

  3. 03/Measure the diluent

    Draw the volume from the Diluent tab, or the volume you entered on the Aliquot tab. If drawing from a sealed vial, equalise pressure by introducing air first.

  4. 04/Run the diluent down the glass

    Angle the needle or tip so the liquid travels down the inner wall of the vial. Direct contact with the lyophilised cake can degrade some sequences.

  5. 05/Dissolve without shear

    Roll the vial between the palms until the cake is gone. Do not shake. Foaming and shear break peptide bonds.

  6. 06/Store as documented

    Lyophilised storage is printed on each product page. Once in solution, follow your laboratory SOP. This site does not state a beyond-use date for reconstituted material.

  7. 07/Withdraw each aliquot

    Swab the stopper before every withdrawal. Use a fresh sterile needle or pipette tip. Compute the draw on the Aliquot tab for the amount required in that session.

Questions

The arithmetic, not a protocol.

Sterile water containing 0.9% benzyl alcohol, a preservative that limits bacterial growth in a multi-withdrawal vial. It is a common laboratory diluent for reconstituting lyophilised peptides. Plain sterile water has no preservative; laboratories that use it typically treat the vial as single-use.