Phosphate buffered saline
Sterile 1X PBS in 10 mL vials, tested lot by lot.
| Pack | Price | Per vial |
|---|---|---|
| 1 vial | $15.00 | $15.00 |
| 5 vials | $71.25 | $14.25 |
| 10 or more | $135.00 | $13.50 |
Ships within 24 hours. Free 2-Day Air on orders over $200.
Lab results for lot PBS102607-100B
- pH
- 7.37
- Endotoxin, EU/mL
- ≤0.05
- Strength, ready to use
- 1X
- Per vial
- 10 mL
Tested by BioRegen, report dated 29 July 2026.Look up any lot’s report
What’s in the vial
Four salts in water, nothing else.
- Composition
- Sodium chloride, potassium chloride, sodium phosphate and potassium phosphate in water
- Calcium and magnesium
- Not included
- Tonicity
- Isotonic
- Appearance
- Clear, colorless solution in a sterile laboratory vial
- Storage
- Room temperature or as stated on the label; keep sealed
Rinse, dilute, wash, stain
Cell culture
Rinse away serum and medium before passaging, trypsinization or harvest.
Immunoassays
The base for ELISA, Western blot and immunostaining washes, including PBST.
Dilution
Dilute antibodies and proteins at physiological pH and ionic strength.
Flow cytometry
The base for staining and wash buffers.
All uses, and when to skip PBS
No calcium or magnesium, so cells lift cleanly before trypsin.
How PBS and DPBS differThe standard 1X recipe
Per liter of water.
| Component | Concentration | Grams per liter |
|---|---|---|
| Sodium chloride (NaCl) | 137 mM | 8.0 |
| Potassium chloride (KCl) | 2.7 mM | 0.2 |
| Disodium phosphate (Na₂HPO₄) | 10 mM | 1.44 |
| Monopotassium phosphate (KH₂PO₄) | 1.8 mM | 0.24 |
| pH | About 7.4 |
Ordering the 10 mL vial
What is phosphate buffered saline?
Phosphate buffered saline (PBS) is a water-based salt solution with a phosphate buffer. It holds pH near 7.4 and matches the osmolarity of many biological systems, so it is used to rinse, dilute and suspend cells, tissue and biomolecules in the lab.
What pH is it?
The current lot, PBS102607-100B, measured pH 7.37 in an independent lab report dated 29 July 2026.
Is it sterile?
Yes. It is supplied as a sterile solution in a sealed laboratory vial. Each lot is tested by an independent lab for bacterial endotoxin and pH; the current lot measured ≤0.05 EU/mL endotoxin.
How fast does it ship?
Orders are processed within 24 hours. 2-Day Air shipping is free on qualifying orders of $200 or more, and Overnight Air is available.
Who fulfils the order?
Orders are placed and fulfilled through Bluum Peptides (Bluum LLC), the operator of this site.
Research use only. Phosphate buffered saline sold here is a laboratory reagent for in vitro research. It is not a drug, food or cosmetic and is not for human or animal use.
Order from lot PBS102607-100B
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