Buffers/Salts

<h2 data-section-id="3d1466" data-start="0" data-end="47">What are cell culture buffers and solutions?</h2>
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Cell culture buffers and balanced salt solutions are isotonic solutions used to wash, dilute, transport, and temporarily maintain cells outside of complete growth media. Unlike culture media, these solutions do not contain the nutrients and growth factors required for cell proliferation. Instead, their primary role is to maintain physiological pH and osmotic balance while protecting cells from stress during handling and experimental procedures.
The most commonly used cell culture buffers include PBS (Phosphate-Buffered Saline), DPBS (Dulbecco's Phosphate-Buffered Saline), HBSS (Hank's Balanced Salt Solution), and EBSS (Earle's Balanced Salt Solution). These solutions are widely used in cell washing, passaging, tissue dissociation, sample preparation, immunoassays, and short-term cell maintenance.
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<h2 dir="ltr">What you will find:</h2>
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<ul>
<li dir="ltr" role="presentation">Standard Isotonic Buffers to wash cells, maintain osmotic balance, and dilute reagents.</li>
<li dir="ltr" role="presentation">Biological Buffering Agents for metabolic support and pH maintenance.</li>
<li dir="ltr" role="presentation">Cell Dissociation &amp; Neutralizing Reagents maintain high cell viability and are used for cell recovery, detachment, and passaging</li>
<li dir="ltr" role="presentation">Surface Coating &amp; Matrix Solutions with high-grade gelatin for improved cell attachment.</li>
<li dir="ltr" role="presentation">Insulin-Transferrin-Selenite (ITS), Bovine Serum Albumin (BSA), and high-purity Holo-Transferrin for enhanced cell growth and viability</li>
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<h2 data-section-id="1cuz7jf" data-start="1165" data-end="1216">How to choose cell culture buffers and solutions</h2>
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PBS vs. DPBS PBS is a simple sodium chloride/phosphate buffer solution. DPBS adds potassium chloride and may include calcium, magnesium, glucose, and pyruvate depending on formulation. The practical difference between PBS and DPBS formulations is minimal &mdash; both maintain pH 7.2-7.4 and osmolality ~280-315 mOsm/kg and are functionally interchangeable for standard washing, immunoassay, and sample preparation applications. If your protocol is sensitive to minor salt concentration differences, compare specific formulation sheets rather than assuming equivalence. &nbsp; Calcium/magnesium-free vs. calcium/magnesium-containing Calcium and magnesium facilitate cell-cell and cell-surface adhesion. Calcium/magnesium-free PBS, DPBS, or HBSS is required: before enzymatic dissociation (residual Ca/Mg inhibits trypsin, requiring more enzyme and harsher conditions &mdash; the most common cause of poor trypsinization results), for rinsing EDTA or other chelators from culture, and for minimizing cell-cell aggregation during gentle dissociation or suspension recovery. Calcium/magnesium-containing formulations support cell binding and clumping, useful for transport applications or attachment-dependent procedures. &nbsp; HBSS/EBSS vs. PBS/DPBS for short-term maintenance HBSS and EBSS include sodium bicarbonate buffering and may include glucose, providing meaningfully better short-term physiological support for cells &mdash; particularly under CO₂ atmosphere &mdash; than the simpler PBS/DPBS formulations. Use HBSS/EBSS when cells need to remain viable for a meaningful period outside complete growth media (tissue dissociation workflows, transport, short-term holding). Use PBS/DPBS for washing steps, immunoassay/Western blot dilutions, and sample preparation where osmotic balance &mdash; not metabolic support &mdash; is the requirement. &nbsp; Phenol red and glucose/pyruvate variants DPBS and HBSS are available with or without phenol red and with or without glucose/pyruvate, allowing matching to downstream applications (phenol red-free for fluorescence work; glucose/pyruvate-containing for short-term metabolic support). &nbsp; Endotoxin and quality testing Regular quality testing of balanced salt solutions includes osmolality, pH, stability, and screening for endotoxins and bacterial/fungal contamination. For immune cell handling and other endotoxin-sensitive applications, premium formulations document endotoxin levels below 0.005 EU/mL &mdash; a meaningfully tighter specification than standard research-grade buffers. &nbsp; Powder vs. liquid format Powdered balanced salt solutions are manufactured without sodium (to avoid sodium bicarbonate off-gassing during storage), requiring sodium bicarbonate addition, pH adjustment, and sterile filtration at time of preparation &mdash; following the same principle as powdered classic media.Specifications context
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<h2>Specifications context</h2>
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Most balanced salt solutions are formulated to maintain physiological conditions with a pH of approximately 7.2&ndash;7.4 and osmolality ranging from about 280&ndash;315 mOsm/kg. These properties help minimize osmotic stress and maintain cell viability during handling.
Calcium- and magnesium-free DPBS remains one of the most commonly specified buffers for cell dissociation workflows because it improves the effectiveness of trypsin and other detachment enzymes. HBSS and EBSS continue to be widely used when short-term metabolic support is required outside complete growth media.
<a href="https://mbpinc.net/contact-us">Contact the expert team</a> at MBP today to get high-purity buffers and solutions for your lab.

Buffers & Solutions

MSDS

Polybrene

G062 by Applied Biological Materials is Polybrene (hexadimethrine bromide) at 0.8 mg/mL in a 1 mL ready-to-use solution — a cationic polymer that enhances retroviral and lentiviral transduction efficiency by neutralizing charge repulsion between viral particles and the cell surface. Store at –20°C.

Unit Quantity

Sterility

Storage Condition

Shipping Condition

SB216763

SB216763 G607 — selective GSK-3 inhibitor, ≥98% purity (NMR &amp; MS verified), 5.0 mg solid. MW 371 g/mol, formula C₁₉H₁₂Cl₂N₂O₂. Aids stem cell self-renewal and Wnt pathway activation. Stable 2 years. Store at −20 °C.

Purity

Caution

Shipping condition

Sodium Pyruvate Solution (100mM)

Sodium Pyruvate Solution 100 mM (TM057) by Applied Biological Materials is a 100 ml sterile liquid supplement providing an exogenous carbon source for in vitro cell culture, supporting amino acid metabolism and Krebs cycle initiation. Lot-tested for sterility, pH, osmolality, and endotoxin. Store at 2–8°C.

Appearance

Disclaimer

Spectinomycin dihydrochloride

Spectinomycin Dihydrochloride G442 — 50 mg/ml ready-to-use solution (1.0 ml). Aminocyclitol antibiotic for selection of aadA-resistant bacterial strains and plant transformation. Store at −20 °C, away from light, for up to one year.

Concentration

Supporting Protocol-Important Considerations for Cell Culture

Supporting Protocol-Cell Handling Instructions Upon Arrival

Flyer

Cell Line-Catalog (Volume 2)

Immortalized Cells-FAQ

Trypsin Neutralizing Solution

Trypsin Neutralizing Solution (TM069) by Applied Biological Materials is a 100 ml serum-free, xeno-free sterile liquid that rapidly inactivates trypsin after cell dissociation, preserving viability and morphology during routine passaging. Lot-tested for sterility, pH, osmolality, and endotoxin. Store at 4°C.

Shipping Conditions

Product Format

Intended Use

Certificate of Analysis

Warranty

Application

Trypsin-EDTA (0.25%)

Trypsin-EDTA 0.25% (TM050) by Applied Biological Materials is a 500 ml sterile solution for enzymatic detachment of adherent mammalian cells during routine subculturing. EDTA chelates Ca²⁺/Mg²⁺ to enhance trypsin-mediated dissociation. Lot-tested for sterility, pH, osmolality, and endotoxin. Store at –20°C.

United States

Texas

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