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HEPES Stock Buffer Solution

HEPES Stock Buffer Solution

(11 customer reviews)

HEPES Stock Buffer Solution adjusts the pH  in cell cultures as well as biochemical analysis. HEPES Maintains psychological pH despite changes in carbon dioxide concentration, therefore HEPES it acts better than bicarbonate in cell culture.

SKU: N/A Category: Cell Culture Suited Buffers Tags: Buffers, Cell Culture, DNase/RNase Free, Calcium and Magnesium Free, Endotoxin Depleted, HEPES Buffer

Description

Background

HEPES Stock Buffer Solution is one of the commonly used buffers in cell cultures as well as biochemical analysis. HEPES Maintains psychological pH despite changes in carbon dioxide concentration, therefore HEPES it acts better than bicarbonate in cell culture applications.  However, HEPES shows an unwanted photochemical process in presence of riboflavin when exposed to ambient light to produce hydrogen peroxide. We therefore recommend keeping the mentioned solutions in dark.

Grades of HEPES Stock Buffer Solution

Regular Grade Buffer

PurMa Biologics manufactures Regular grade of buffer by using:  PurMa™ Cell Culture Suited Water (Cat# P3W110101)

we finally sterilize the buffers by autoclaving the solution and packing  in our Class 100 Aseptic Facility.

Cell Culture Suited Grade Buffer

PurMa Biologics manufactures this grade of buffer by using :PurMa™ Cell Culture Suited Water (Cat# P3W110101)

In our Class 100 Aseptic Facility we Buffer will finally sterilize the buffer by 0.2 µm filter and pack under N2

RNase and DNase Free Grade Buffer

PurMa Biologics manufactures this grade of buffer by using :PurMa™ Cell Culture Suited Water (Cat# P3W120103)

In our Class 100 Aseptic Facility we Buffer will finally sterilize the buffer by 0.2 µm filter and pack under N2

Cell Culture Suited / Endotoxin Depleted Grade Buffer

PurMa Biologics manufactures this grade of buffer by using: PurMa™ Ultra-Pure Cell Culture Suited Water (Cat# P3W110102)

In our Class 100 Aseptic Facility we Buffer will finally sterilize the buffer by 0.1 µm filter and pack under N2

The Endotoxin Removing Procedure from Buffer

PurMa biologics has the most sophisticated endotoxin removal. For that we pass the buffer  through the PurMaTM Endotoxin Elimination Column (Cat# P6H1216251). Furthermore, in our proprietary column we covalently conjugate Sepharose 6B   to an endotoxin-specific absorbent. we finally  eliminate the residual endotoxin by passing the unbound fraction three times through 0.1µm filters.

Features

  • Cell Culture Suited
  • Provides a buffer solution to maintain the physiological pH despite changes in carbon dioxide concentration.
  • PurMa Biologics manufactures this buffer  using Mg2+ and Ca 2+free water
  • Free of RNAse /DNase
  • Free of Proteases. It is rigorously tested for contaminating nonspecific endonuclease, exonuclease, and RNase activity.
  • We rigorously test for contamination of endotoxin and mycoplasma.
  • PurMa Biologics manufactures this buffer in several PH formats and NaOH adjusts the pH.
  • We Sterilize this buffer using  0.2µm filters.
  • As it is packed under N2, the pH won’t change over time before opening the bottle.

References

  1. Toxicity of light-exposed Hepes media. Lepe-Zuniga JL, Zigler JS Jr, Gery I. J Immunol Methods. 1987 Oct 23;103(1):145. doi: 10.1016/0022-1759(87)90253-5. PMID: 3655381.
  2. Analysis of the cytotoxic effects of light-exposed HEPES-containing culture medium. Zigler, JS Jr , Lepe-Zuniga JL, Vistica B, Gery I. In Vitro Cell Dev Biol. 1985 May;21(5):282-7. doi: 10.1007/BF02620943. PMID: 4019356.
Parameter Specification
Appearance Red, clear liquid
pH 6.5 ± 0.1; 7.0 ± 0.1; 7.5 ± 0.1; 7.6 ± 0.1; 8.0 ± 0.1; 8.5 ± 0.1; 9.0 ± 0.1
Osmolality  275-360 mOsm/L
Endotoxin  NMT< 2EU/mL
Mycoplasma Negative
Suitability  Suitable for mammalian cell culture
Additive  N/A
Indicator  N/A
Mycoplasma Detection Negative
Sterility Tested  Sterile filtered using 0.22 µm filter
Form Liquid
Shipping Condition  Room temperature

 

Additional information

Concentration

0.1 M, 0.2 M, 0.5 M, 1 M, 2 M
Grade

Regular, RNase and DNase Free, Cell Culture Suited, Ca and Mg Free, Cell Culture Suited, Ca and Mg Free, Endotoxin Depleted
pH

pH 6.5, pH 7.0, pH 7.5, pH 7.6, pH 8.0, pH 8.5, pH 9.0
Size

1 x 100 ml, 6 x 100 ml, 1 x 500 ml, 6 x 500 ml

11 reviews for HEPES Stock Buffer Solution

  1. azadi@live.ca –

    Review: we have purchased Lipid Depleted FBS , DMEM F12 …. they were good quality and decent price
    Have you purchased: Yes
    Time of submission: 29-Jan-2025 23:10:30
    Ease of placing the order: 5/5

  2. Anonymous –

    Review:
    Have you purchased:
    Time of submission: 21-Feb-2025 15:30:00
    Ease of placing the order: ‘not given’

  3. Gregory-Mullen@ouhsc.edu –

    Review: We buy *all* of our cell culture media, fetal bovine sera, and lipid-depleted sera from PurMa. The quality of their reagents is absolutely top-notch, giving us reliable, repeatable results in our experiments. We highly recommend PurMa!
    Have you purchased: Yes
    Time of submission: 21-Feb-2025 15:46:22
    Ease of placing the order: 5/5

  4. Anonymous –

    Review:
    Have you purchased:
    Time of submission: 24-Feb-2025 13:50:14
    Ease of placing the order: ‘not given’

  5. lrothblu@ouhsc.edu –

    Review: Serum worked beautifully. Cells grew well and had their usual cycle time. Tissue culture medium also worked very well.
    Have you purchased: It is my first Purchase
    Time of submission: 24-Feb-2025 13:53:22
    Ease of placing the order: 5/5

  6. Anonymous –

    Review:
    Have you purchased:
    Time of submission: 27-Feb-2025 17:42:44
    Ease of placing the order: ‘not given’

  7. Anonymous –

    Review:
    Have you purchased:
    Time of submission: 05-Mar-2025 16:31:44
    Ease of placing the order: ‘not given’

  8. michael-rudolph@ouhsc.edu –

    Review: I have worked directly with PurMa biologics on a number of projects ongoing in my lab. I find the media and the specialty Lipid Depleted Serum to be high quality and very consistent among batches, which is critical to our adipogenesis projects using primary stem cells. Also, the service from PurMa is outstanding for my lab.
    Have you purchased: Yes
    Time of submission: 05-Mar-2025 16:35:21
    Ease of placing the order: 5/5

  9. Anonymous –

    Review:
    Have you purchased:
    Time of submission: 05-Mar-2025 17:29:13
    Ease of placing the order: ‘not given’

  10. Anonymous –

    Review:
    Have you purchased:
    Time of submission: 10-Mar-2025 14:32:38
    Ease of placing the order: ‘not given’

  11. jkurien@hausbio.com –

    Review: We have been working with PurMa biologics for the past several years , we buy cell culture related media like DMEM F12 and EMEM and Fetal Bovine Serum . We appreciate the high quality and reasonable price, and great customer service.
    Have you purchased: Yes
    Time of submission: 12-Mar-2025 12:34:09
    Ease of placing the order: 5/5

Only logged in customers who have purchased this product may leave a review.

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