Free shipping on international order of $150+
Fast & International Shipping
International click & collect

What is the difference between Tris base and Tris-HCl?


What is the difference between Tris base and Tris-HCl?

Short for Tris (hydroxymethyl) aminomethane (THAM) hydrochloride, Tris HCl is an organic compound often used in buffer solutions such as TAE or TBE for electrophoresis gels. Tris is highly soluble in water and is useful in the pH range 7.0-9.0. It is used in the preparation of Laemmli buffer, one of the most common SDS-PAGE buffers. In addition, Tris can also be used for many custom running and loading buffers, most often with glycine and SDS. The use of single-junction pH electrodes that contain silver should be avoided when determining the pH of a solution containing Tris buffer.

A Tris buffer solution can be made by mixing Tris with Tris-HCl. This prevents overshooting the pH and prevents the need to work with strong acids or bases. If neutralizing Tris-HCl with a strong base such as NaOH to make a buffer solution, ionic strength should be taken into consideration because of the formation of salt. Tris hcl molecular weight, tris hcl buffer, tris base vs tris hcl, tris hcl mw, what is the role of tris hcl in dna isolation, how to make 50 mm tris hcl, what is tris hcl buffer used for, how to make tris hcl, how to prepare tris hcl buffer.

Product Specifications
Tris Hydrochloride
Tris HCl;

Formula: C4H11NO3 · HCl

MW: 157.60 g/mol

Storage/Handling: Store in a dry and well-ventilated place.

PubChem Chemical ID: 93573


Tris buffer:

Tris, or more accurately, tris(hydroxymethyl)aminomethane is a buffer that is used extensively in molecular biology and biochemistry. Its useful buffer range is between pH 7-9, which corresponds to physiological pH of most living organisms.

Answer and Explanation:

As a pure compound, Tris is a base, and its aqueous solutions are alkaline. Tris base does not have buffering capacity.

To generate buffering capacity, it should be in equilibrium with the corresponding acid, in other words, the protonated form of Tris. Protonated Tris is formed by adding HCl until the solution reaches the desired pH. This is referred to as Tris-HCl.

Tris-HCl, molecular biology grade, Tris(hydroxymethyl)aminomethane hydrochloride

Tris-HCl, molecular biology grade, Tris(hydroxymethyl)aminomethane hydrochloride

For electrophoresis, molecular biology, and cell culture applicationsTris Hydrochloride is a buffering medium for electrophoresis, molecular biology, and cell culture applications. It may be combined with Tris Base to simplify Tris buffer preparation.


The pH values of all buffers are temperature and concentration dependent. For Tris buffers, pH increases about 0.03 unit per °C decrease in temperature, and decreases 0.03-0.05 unit per ten-fold dilution.
For precise applications, use a carefully calibrated pH meter with a glass/calomel combination electrode.Tris HCl is a commonly used biological buffer. Tris/Tris HCl as a buffering system has a very broad usage in biological systems for biopharmaceutical manufacturing, cell culture, diagnostics and molecular biology. The pKa of Tris is 7.77 which corresponds closely to a physiological pH of 7.36.

Tris HCl is used as the conjugate buffer component with Tris/Tromethamine/Trizma in biopharmaceutical buffer formulations (both upstream and downstream applications), electrophoresis separations and diagnostic reagent formulations.


100 g in poly bottle5, 25, 50 kg in poly drum

Leave a Reply

Shopping Cart (0)