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2021-06-17

How do you make MES buffer pH 6?

How do you make MES buffer pH 6?

MES (0.5 M, pH 6) Preparation and Recipe

  1. Prepare 800 mL of dH2O in a suitable container.
  2. Add 97.62 g of MES free acid to the solution.
  3. Starting pH for 0.5M MES solution is 3.23 For 1 L of 0.5 M MES, 13.6 ml of 10N NaOH is needed to adjust the pH to 6.0.
  4. Add dH2O until volume is 1 L.

How will you prepare 0.1 M MES buffer?

0.1 M MeS Buffer: Dissolve 19.2g of MeS free acid (MW 195.2) in ~900ml of pure water. Titrate to desired ph (5.2-6.0) with 1n naOh. Make up volume to 1,000ml with pure water.

What is MES buffer used for?

MES lacks the ability to form a complex with most metal ions and is recommended for use as a non-coordinating buffer in solutions with metal ions. MES is often used in buffered culture media for bacteria, yeast, and mammalian cells.

Can you autoclave MES buffer?

Autoclaving is not recommended for any sulfonic acid buffer. When MES solutions are autoclaved, they turn yellow (although pH does not change measurably). The identity of the yellow breakdown product is unknown. When MES solutions are stored at room temperature, they can turn yellow within six months.

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Is MES buffer light sensitive?

MES is a zwitterionic N-substituted aminosulfonic acid known as a Good’s buffer, active in the pH range 5.5-6.7 with a pKa of 6.10 at 25°C. MES is not absorbed through cell membranes, and it is essentially transparent to UV light1.

How does the MES system work?

MES works in real time to enable the control of multiple elements of the production process (e.g. inputs, personnel, machines and support services). MES creates the “as-built” record, capturing the data, processes and outcomes of the manufacturing process.

What is MES in chemistry?

MES is the common name for the compound 2-(N-morpholino)ethanesulfonic acid. Its chemical structure contains a morpholine ring. It has a molecular weight of 195.2 and the chemical formula is C6H13NO4S. MOPS is a similar pH buffering compound which contains a propanesulfonic moiety instead of an ethanesulfonic one.