How Much Bacteriostatic Water for a KLOW Blend 80 mg Vial?
An 80 mg vial of KLOW Blend reconstituted with 2 mL of bacteriostatic water gives a concentration of 40 mg/mL; with 3 mL it gives 26.67 mg/mL. The calculation depends only on the quantity in the vial and the volume of water added, so the figures below apply to any 80 mg vial.
Voir le produit →There is no single correct volume. Adding more water does not change how much is in the vial. It spreads the same quantity through a larger volume, which changes how many syringe units correspond to a given amount. The tables on this page use volumes that produce round numbers on a U-100 syringe; other volumes work identically as long as the resulting concentration is written on the vial.
Concentration by water volume
Concentration is the quantity in the vial divided by the water volume. An 80 mg vial holds 80 mg whether it receives 2 mL or 5 mL; only the mg/mL figure moves. The right-hand column converts each concentration into the number of U-100 units that contain 10 mg.
| Vial | Bacteriostatic water added | Concentration | Units containing 10 mg |
|---|---|---|---|
| 80 mg KLOW | 2 mL | 40 mg/mL | 25 units |
| 80 mg | 3 mL | 26.67 mg/mL | 37.5 units |
| 80 mg | 4 mL | 20 mg/mL | 50 units |
| 80 mg | 5 mL | 16 mg/mL | 62.5 units |
Before choosing a larger volume, check that the vial has headspace for it. A 10 mL vial of bacteriostatic water reconstitutes five 80 mg vials at 2 mL each.
What each draw carries
Because the components are fixed in ratio, the concentration of each one is its own mass divided by the same water volume. At 2 mL the whole vial sits at 40 mg/mL, and each component contributes as follows.
| Component | In the vial | Per 1 mL (100 units) | Per 0.1 mL (10 units) |
|---|---|---|---|
| GHK-Cu | 50 mg | 25 mg | 2.5 mg |
| BPC-157 | 10 mg | 5 mg | 0.5 mg |
| TB-500 | 10 mg | 5 mg | 0.5 mg |
| KPV | 10 mg | 5 mg | 0.5 mg |
Double the water and every figure in the last two columns halves; the ratio between the components never changes.
Reading the concentration on a U-100 syringe
A U-100 insulin syringe is graduated in units, and 100 units equal 1 mL. Units are therefore millilitres multiplied by 100: 0.1 mL is 10 units and 0.25 mL is 25 units. A 0.5 mL syringe carries 50 units and a 0.3 mL syringe carries 30 units on the same scale, with finer markings that make small volumes easier to read.
To find the volume that contains a given amount, divide the amount by the concentration. At 40 mg/mL (an 80 mg vial with 2 mL of water), the volume that contains 10 mg is 10 divided by 40, which is 0.25 mL, or 25 units. The table below runs the same calculation for four arbitrary amounts. They illustrate the arithmetic and nothing else.
| Amount (illustrative) | Volume at 40 mg/mL | U-100 units |
|---|---|---|
| 4 mg | 0.1 mL | 10 units |
| 8 mg | 0.2 mL | 20 units |
| 10 mg | 0.25 mL | 25 units |
| 20 mg | 0.5 mL | 50 units |
At 26.67 mg/mL, which the same vial gives with 3 mL of water, every volume in the table moves in proportion: a 10 mg draw measures 37.5 units instead of 25. Volumes below about 0.1 mL are hard to read accurately on a 1 mL syringe. Either move to a 0.3 mL or 0.5 mL syringe, or reconstitute with more water so that the same mass occupies a larger, more legible volume.
KLOW Blend is supplied by Vistara Labs as a lyophilised material for research use. The quantities on this page illustrate the arithmetic of dilution and measurement only.
The KLOW Blend vial
KLOW Blend is a four-peptide vial: 50 mg GHK-Cu, 10 mg BPC-157, 10 mg TB-500 and 10 mg KPV, 80 mg in total. The four are fixed in that ratio, so reconstituting the vial sets one concentration for all of them at once, and every draw carries the same proportions. The 80 mg on the label is the combined mass, and the tables above treat it as one quantity. Certificates of analysis for the catalogue are published on the Résultats de laboratoire page.
The fixed ratio is the point of the blend and also its limit. Once the vial is reconstituted, the four peptides cannot be separated or rebalanced, so a protocol that needs more KPV relative to GHK-Cu, or BPC-157 without the copper peptide, calls for separate vials instead. The trade-off is set out in blend or separate vials?. The only difference between KLOW and GLOW is the 10 mg of KPV; the two are compared in KLOW vs GLOW.
Reconstitution technique
Let the vial reach room temperature, swab both stoppers, and run the measured water slowly down the inside wall of the vial rather than onto the powder. Swirl or tilt gently until the cake dissolves, never shake, and give any remaining powder a few minutes to settle into solution. Label the vial with the date and the concentration, then keep it refrigerated at 2 to 8 °C and protected from light. The full method, with the reason behind each step, is in l'achat d'eau bactériostatique au Canada.
Why the solution is blue
Properly reconstituted KLOW Blend forms a clear blue solution. The colour is the copper ion in GHK-Cu and deepens with concentration; it is not a dye and not a fault. What should not appear is cloudiness, visible strands or a gel that will not disperse, which often point to water being added too fast or the vial being shaken. Turbidity that appears after a period of storage can mean the solution has been kept too warm or exposed to light. The causes are covered in more detail in why peptides gel or go cloudy.
Bacteriostatic water, not sterile water
Bacteriostatic water is sterile water with 0.9% benzyl alcohol, a preservative that allows a refrigerated vial to be accessed more than once; plain sterile water is intended for single access. The difference is explained in bacteriostatic water explained.
Questions fréquentes
How much bacteriostatic water do I add to an 80 mg vial of KLOW Blend?
There is no single correct volume. With 2 mL of bacteriostatic water an 80 mg vial of KLOW Blend gives 40 mg/mL; with 3 mL it gives 26.67 mg/mL. Adding more water does not change the quantity in the vial, it spreads it through a larger volume, so write the concentration you chose on the vial.
How many 80 mg vials does a 10 mL vial of bacteriostatic water cover?
A 10 mL vial of bacteriostatic water reconstitutes five 80 mg vials at 2 mL each. Check that the peptide vial has headspace for the volume before choosing a larger one.
How many units on a U-100 syringe contain 10 mg at 40 mg/mL?
At 40 mg/mL (an 80 mg vial with 2 mL of water), the volume that contains 10 mg is 10 divided by 40, which is 0.25 mL, or 25 units. Units are millilitres multiplied by 100, so 0.1 mL is 10 units. The amounts on this page illustrate the arithmetic only.
What should reconstituted KLOW Blend look like?
Properly reconstituted KLOW Blend forms a clear blue solution. The colour is the copper ion in GHK-Cu and deepens with concentration; it is not a dye and not a fault. What should not appear is cloudiness, visible strands or a gel that will not disperse, which often point to water being added too fast or the vial being shaken. Turbidity that appears after a period of storage can mean the solution has been kept too warm or exposed to light. More on the causes in why peptides gel or go cloudy.
Can I use sterile water instead of bacteriostatic water?
Only for a vial that will be accessed once. Bacteriostatic water is sterile water with 0.9% benzyl alcohol, a preservative that allows a refrigerated vial to be accessed more than once; plain sterile water is intended for single access. Details in bacteriostatic water explained.
How should a reconstituted KLOW Blend vial be stored?
Refrigerated at 2 to 8 °C, protected from light and labelled with the date and the concentration. Unopened lyophilised vials are kept cold and dark until they are needed. The full storage guide is how to store research peptides.
Work it out for a different vial or concentration
Our calculateur de peptides opens pre-set for an 80 mg vial with 2 mL of water and marks the 10 mg draw of 25 units on a syringe diagram. Change the vial size, water volume, amount or syringe and it recalculates.
Products: KLOW Blend 80 mg et bacteriostatic water 10 mL.
Références
No study of the KLOW blend as a complete formulation was identified. The references below cover its individual components.
- Enhanced healing of ulcers in patients with diabetes by topical treatment with glycyl-l-histidyl-l-lysine copperEssai multicentrique randomisé, contrôlé par placebo, à l'insu de l'évaluateur; GHK-Cu topique dans les ulcères neuropathiques diabétiques.
- Intra-Articular Injection of BPC 157 for Multiple Types of Knee PainRevue rétrospective de dossiers, 17 patients (16 suivis par téléphone); pas de groupe témoin, pas d'insu, pas d'instrument de mesure validé.
- Synthesis and characterization of the N-terminal acetylated 17-23 fragment of thymosin beta 4 identified in TB-500, a product suspected to possess doping potentialChimie analytique : caractérise le TB-500 comme le fragment 17-23 N-acétylé de la thymosine β4 (Ac-LKKTETQ), pas la protéine intacte de 43 acides aminés.
- PepT1-mediated tripeptide KPV uptake reduces intestinal inflammationÉtude de laboratoire sur des cellules épithéliales intestinales humaines et des lymphocytes T humains; aucune exposition humaine.
Les liens ouvrent la fiche de l'étude sur PubMed afin que la source puisse être vérifiée directement. Citer une étude ne signifie pas que ses résultats s'appliquent à un autre usage, produit ou mode d'administration. Usage laboratoire uniquement.
