2.5-4 (25 °C, 97.6 g/L)
5.5 - 6.7
Diagnostic Assay Manufacturing
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
The amount of water/moisture for MES (M3671) is tested by Karl Fisher and meets a specification of less than 1%. The other MES Hydrates offered have a specification of less than 9%.
We test the solubility of Prod. No. M3671 at 20 grams in 80 mL of water. A clear, colorless solution is obtained. This concentration is not necessarily the upper solubility limit of MES in water.
The pH of a 0.5 M solution in water should be between 2.5 and 4.0.
Autoclaving is not recommended for any sulfonic acid buffer solution. Sterilization of a MES buffer solution can be accomplished by filtering it through a 0.2 micron filter.
A buffer using MES free acid can be prepared by titrating the free acid with sodium hydroxide to the desired pH. Alternatively, volumes of equimolar MES free acid and sodium MES can be mixed to attain the desired pH.
There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote. USA customers: 1-800-325-3010 or view local office numbers.
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
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