Buffer Solutions

Buffer Solution pH 4

From: £29.88

From: £29.88


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  • Custom packaging
  • Personalised labelling
  • Specific pack sizes
  • Bespoke blending
  • Bulk quantities
  • Different grades available

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  • MSDS


Why Should you Buy Buffer Solution pH 4 from ReAgent?

We supply buffer solution pH 4 in 1L, 2.5L, 5L and 10L containers, with discounts available for bulk orders. The MSDS is also available to download from our website.

We supply buffer solution pH 7, pH 9, pH 9.2 and pH 10, as well as ammonia buffer solution. In addition, all our products come with further options, including customised labelling and specific pack sizes.

What is a Buffering Agent?

A buffering agent, which can be either a weak acid or a weak base, can resist pH changes when bases or acids are added. These buffering agents are usually dissolved in water to make buffering solutions.

The way these buffering agents restrict pH changes can be demonstrated by comparing how buffered and non-buffered solutions react to the addition of acids or bases. In chemical terms, these solutions work by establishing an equilibrium between the acid and its respective conjugated base. The concentration of the acid and salt can vary, but their ratio (in log form) remains stable.

Examples of Buffering Agents

Monopotassium phosphate (MPK) is a buffering agent often used in the manufacture of fertiliser, it limits pH changes avoiding nitrogen losses and also works as a source of potassium

There are many buffering agents in the body to ensure that metabolic reactions occur within their preferred pH range. Examples include bicarbonate and ammonia, as well as some proteins and phosphate.

Many cosmetic and personal hygiene products are buffered to ensure they stay slightly acidic. If these products turn too acidic or too alkaline they could damage skin and hair.

Fast Delivery

All our products come with 100% quality guarantee and are usually shipped within 24 hours after purchase. If you need help, a member of our customer service team will be glad to help before, during and after your order to ensure our product meets your needs. We also offer free technical advice.




MSDS Files

The following files are available to download:

Product IDProductpost_statusBulkDownload SDS File
3347Buffer Solution pH 4publish1136https://www.chemicals.co.uk/uploads/documents/44 - 1136 - SDS10677.pdf

Our most popular product is displayed above. Other variants of this product are displayed below.

Need a Buffer Solution?

ReAgent is a leading UK chemical manufacturer with over 40 years of industry experience. We supply top-grade buffer solutions that are 100% quality guaranteed. With a catalogue of accreditations and state-of-the-art facilities, we are a company you can trust.

Buy your product from ReAgent and benefit from unrivalled customer support, internationally recognised quality, and flexibility:

  • We supply buffer solutions in a range of pack sizes, including 1L to 10L containers with discounts for bulk orders
  • Our buffer solutions are available in a range of pH readings, including pH 4, 7 and 9.2
  • We also offer further options with all our products, such as customised labelling and bespoke blending
Buffer solutions are often used during in vitro testing. When used here, it is important that the solution is the highest quality possible to ensure accurate data is obtained. In the future, ReAgent will supply its top-grade buffer solutions to in vitro testing, which is a testament to the quality of our products.

About Buffer Solutions

Buffer solutions are simply aqueous solutions of a weak acid or base with the ability to maintain a stable pH, even when large amounts of a strong base or acid are added. Buffering agents are commonly used in household products, such as dish detergent and washing up liquid, as well as soap and shampoo.

Examples of buffering agents include fatty acids, borate, citric acid, sodium triphosphate and silicate.

Most cosmetic and personal hygiene products are buffered to maintain a neutral or slightly alkaline pH. This is to eliminate the soap's naturally high pH. The buffer solution prevents the products becoming too acidic or alkaline which could become irritating for the skin.

How Does it Work?

In any solution, acids increase the concentration of H+ while alkalis generate OH- ions. The pH reflects the ratio between these two ions. A buffering solution can absorb the addition of extra H+ or OH- after the addition of an acid or base. This means the relative concentration of H+ and OH- remains stable and the pH does not change.

Typically, acidic buffering solutions - such as to maintain pH4 - contain a weak acid and its respective conjugated base. Strong acids are not good buffering agents as these solutions need large amounts of the acid to be present in a non-ionised form. In a similar manner, an alkaline buffering solution is made up with a weak alkali and its respective salt.

Open an Account

If you're a regular customer, why not open an account with us to make your orders smoother and easier? If you wish to do so, simply contact us and a member of your sales team will be glad to help. We also offer free technical advice about all our products.    
0800 990 3258