Life Science Buffers
Balanced salt solutions and powders used for molecular, protein, nucleic acid, and cell biology applications including cell culture, electrophoresis, ELISA, and chromatography processes; available in a variety of formulations and grades.
Buffer solutions serve to keep pH (acidity or alkalinity) nearly constant in a variety of chemical and biological applications. For example, a bicarbonate buffer helps maintain the pH of blood, a buffered saline maintains cellular contents at a consistent pH level, and buffers help maintain a narrow pH range for enzymes to function correctly.
Most biological samples used in research are kept at a pH of about 7.4. Common biological buffers used for tissue culture include Dulbeccos phosphate buffered saline (PBS), Tris base, HEPES, MOPS, PIPES, and other formulations developed for specific cell lines or applications. Most buffers used in cell culture are also DNase-, RNase-, and protease-free.
The choice of buffer for a particular biological reaction or site depends on several factors:
- Temperature
- Desired or target pH
- Buffer toxicity (to the system)
- Buffer interactions with other system components
Gold Biotechnology Inc HEPES, Free Acid 1 kg
HEPES is a buffering agent used in biochemistry and molecular biology that was selected and described by Good et al. It is a zwitterionic, piperazinic buffer that is useful for a pH range of 6.8 – 8.2. HEPES lacks the ability to form a significant complex with most metal ions and is recommended for use as a non-coordinating buffer in solutions with metal ions. It is commonly used in cell culture media and as an ampholytic separator to create a pH gradient in isoelectric focusing. HEPES interferes with reactions between DNA and restriction enzymes to a lesser extent than similar buffers with less substituted amine groups, such as Tris. This lack of interference occurs because steric hindrance of the protonated tertiary amine in HEPES shields the negative charge of DNA to a lesser extent than less substituted buffers. This buffer is capable of forming radicals and is therefore not suitable for redox reactions. It is suitable for use in the bicinchoninic acid (BCA) assay.
BioMed Diagnostics An isotonic solution typically used for detection of the severe acute respiratory syndrome SARS-CoV-2. | Available in: 50 pack
This Saline Solution (0.85%) has been validated for the detection of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that causes COVID-19 disease in humans. | Product Principle: 1.) Intended to aid in the process of collection and transport of human clinical specimen. 2.) Ensures a non-replicating competent status of SARS-CoV-2. 3.) Is aseptic and does not contain bacteria or fungi growth-inhibition agents. 4.) Validated to be compatible with the identification of SARS-CoV-2 using qRT-PCR technology | Detects: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). | Available in: 50 pack
Abcam Antigen Retrieval Buffer (100 x Tris Buffer, pH 10.0), 125ML
Antigen Retrieval Buffer (100X Tris Buffer, pH 10.0) is a special solution that enables rehydrate and target retrieval in formalin-fixed, paraffin-embedded tissue sections in one step.
The product is subject to the following: Abcam Restricted Use Statement
Teknova 200mM Tris, pH 7.0. 1mL, Sterile. 50 Pack
Tris (tris(hydroxymethyl)aminomethane) is used as a component ofbuffer solutions, especially for solutions ofnucleic acids. The useful buffer range for tris (pH 7–9) is similar to the pH of most living organisms. This, and its low cost, make tris one of the most common buffers in the biology/biochemistry laboratory.
Boston Bioproducts Inc Phosphate Buffered Saline, PBS (Sterile-Filtered, RNase Free) - 1L
Phosphate Buffered Saline (PBS) is a buffer solution widely used in biological research due to its isotonic and non-toxic nature. With a pH range of 7.0 to 7.4, PBS mimics the osmolarity and ion concentrations of the human body, making it ideal for applications including protein purification, western blotting and immunoassays, sample dilution, and as a transport medium. This buffer is also tested for RNase enzymes, minimizing risk of nucleic acid degredation in downstream applications.
Boston Bioproducts Inc Paraformaldehyde (4%, PBS with Mg & EGTA) - 250ml
Paraformaldehyde (4% PBS with Mg and EGTA) - 250ml (For Research Use and Further Manufacturing Only)
Boston Bioproducts Inc Tris Buffered Saline-Tween, TBST (10X, with 1% Tween-20, pH 7.4) - 4x1L
Tris Buffered Saline-Tween TBST (10X with 1% Tween-20 pH 7 4) - 4x1L (For Research Use and Further Manufacturing Only)
Boston Bioproducts Inc Tris-HCl Buffer (1 M, pH 6.8) - 500ml
Tris-HCl Buffer (1 M pH 6 8) - 500ml (For Research Use and Further Manufacturing Only)
Boston Bioproducts Inc Tris-HCl Buffer (1 M, pH 8.0) - 1L
Tris-HCl Buffer (1 M pH 8 0) - 1L (For Research Use and Further Manufacturing Only)
Boston Bioproducts Inc Tris Buffered Saline, TBS (10X, pH 7.6) - 1L
Tris Buffered Saline TBS (10X pH 7 6) - 1L (For Research Use and Further Manufacturing Only)