Morpholinoethane sulfonic acid monohydrateanalytical grade

C6H13NO4S·H2OMr 213.25CAS [145224-94-8]

MES or Morpholinoethane sulfonic acid is a zwitterionic N-substituted aminosulfonic acid Good’s buffer for biochemistry and molecular biology (1, 2). The pKa (20 °C) of 6.15 makes MES an ideal component for cell culture media and protein based buffer formulations to maintain a stable environment in solution.
MES is used as a SDS PAGE running buffer for resolving small proteins and as well as a biological buffer in plant cell cultures.
MES is non-toxic to culture cell lines, highly water soluble and provides high solution clarity. Sterilization should be by filtration through 0.2 μm filters. Autoclaving is not recommended by any sulfonic acid buffers.

Assay (titr.)
A 1 cm/0.1 M in water
260 nm
280 nm
pH 1 % in water

min. 99.0 %

max. 0.05
max. 0.02
2.5 - 4.0

  1. Good, N.E. & Izawa, S. (1972) Methods Enzymol. 24, 53-68
  2. Sankar, M. & Bates, R.G. (1978) Anal. Chem. 50, 1922-4

EINECS: 224-632-3HS: 29349990
Storage Temperature: +15 °C to +30 °C

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Electrophoresis by SERVA - Catalog 2022

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Electrophoresis by SERVA - Catalog 2022

• Isoelectric Focusing


• 2D Electrophoresis

• Native Electrophoresis

• Western Blotting

• Nucleic Acid Electrophoresis

• Equipment

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In detail you will find the following new products in catalog 2022:

New glycosidases such as Endo F3, Endo S and Sialidase
Blotting kits to match the "Easy Peel" 2D HPE™ gels for blotting horizontal 2D gels
New protein standards, e.g. SERVA Triple Color Protein Standard I    and the SERVA Fluo-610 Protein Standard I, pre-stained for direct fluorescence detection
BlueVertical™ PRiME™ blot module and gel casting stand for SERVA's BV-104   electrophoresis  tank
he albumin portfolio has been expanded with the "Albumin bovine Fraction V, protease- free, low IgG"
Ready-to-use CL HRP Western Blotting Substrates SERVALight "PreMix"


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