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51558

Sigma-Aldrich

HEPES buffered saline

BioUltra, for molecular biology, 2× concentrate

Synonym(s):

HEPES Saline Buffer Solution

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About This Item

MDL number:
UNSPSC Code:
12161700
PubChem Substance ID:
NACRES:
NA.25
Pricing and availability is not currently available.

grade

for molecular biology

Quality Level

product line

BioUltra

form

liquid

quality

2× concentrate

composition

dextrose, 2.0 g/L
HEPES, 10 g/L
KCl, 0.74 g/L
NaCl, 16 g/L
Na2HPO4.2H2O, 0.27 g/L

concentration

2 ×

impurities

DNases, none detected
RNases, none detected
phosphatases, none detected
proteases, none detected

refractive index

n20/D 1.339

pH

7.2 (25 °C)

cation traces

Al: ≤1 mg/kg
Ba: ≤1 mg/kg
Bi: ≤1 mg/kg
Ca: ≤5 mg/kg
Cd: ≤1 mg/kg
Co: ≤1 mg/kg
Cr: ≤1 mg/kg
Cu: ≤1 mg/kg
Fe: ≤1 mg/kg
Li: ≤1 mg/kg
Mg: ≤1 mg/kg
Mn: ≤1 mg/kg
Mo: ≤1 mg/kg
Ni: ≤1 mg/kg
Pb: ≤1 mg/kg
Sr: ≤1 mg/kg
Zn: ≤1 mg/kg

λ

neat

UV absorption

λ: 260 nm Amax: 0.06
λ: 280 nm Amax: 0.04

SMILES string

OCCN1CCN(CC1)CCS(O)(=O)=O

InChI

1S/C8H18N2O4S/c11-7-5-9-1-3-10(4-2-9)6-8-15(12,13)14/h11H,1-8H2,(H,12,13,14)

InChI key

JKMHFZQWWAIEOD-UHFFFAOYSA-N

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General description

HEPES buffered saline is a tissue culture buffer,[1] which is used to maintain the pH of cell culture.[2] It is water soluble and atmosphere independent. HEPES destroys magnesium in sodium chloride solutions.[3]

Application

HEPES buffered saline has been used:
  • for the preparation of plasmid DNA[4][5]
  • as a reagent to prepare transfection master mix for DNA construct vectors[6]
  • to develop hydrogel precursor for cell leakage assay[7]

Components

concentration (in H2O): 10 g/l HEPES; 16 g/l NaCl; 0.74 g/l KCl; 0.27 g/l Na2HPO4.2H2O; 2.0 g/l dextrose

Storage Class Code

10 - Combustible liquids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

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Questions

1–3 of 3 Questions  
  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Helpful?

  3. whether the HEPES is dissolved in PBS? Additionally, how about the concentration of the HEPES in PBS?

    1 answer
    1. Per the components section on the Product Detail page, the composition of the product is as follows: concentration (in H2O): 10 g/l HEPES; 16 g/l NaCl; 0.74 g/l KCl; 0.27 g/l Na2HPO4.2H2O; 2.0 g/l dextrose.

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