Packs sizes (6)
code | packaging size | price per unit | box price per unit | |
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Code & packaging | Price per piece | |||
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code
A1069,0100
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packaging size
100 g
|
price per unit
single
$59,85
|
box price per unit
|
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code
A1069,0250
|
packaging size
250 g
|
Product active until stock lasts.
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code
A1069,0500
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packaging size
500 g
|
price per unit
single
$203,70
|
box price per unit
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code
A1069,1000
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packaging size
1 kg
|
price per unit
single
$335,25
|
box price per unit
$284,96x 6 units
|
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code
A1069,5000
|
packaging size
5 kg
|
price per unit
single
$1450,50
|
box price per unit
|
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code
A1069,9025BW
|
packaging size
25 kg
|
price per unit
single
Request a quote
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box price per unit
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Technical data
- Physical Description:
- Solid
- Product Code:
- A1069
- Product Name:
- HEPES for buffer solutions
- Specifications:
- Assay (titr.): min. 99.5 %
pH (1 %; H2O): 4.7 - 6.0
Heavy metals (as Pb): max. 0.001 %
Water: max. 0.5 %
Chloride: max. 0.05 %
Sulfate: max. 0.05 %
- WGK:
- 1
- Storage:
- RT
- EINECS:
- 230-907-9
- CS:
- 29335995
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Comments
About HEPES - HEPES is a short name for 2-(4-(2-hydroxyethyl)-1-piperazinyl)-ethanesulfonic acid, a buffer substance. - Chemical properties - HEPES is used for biochemical, molecular biological and microbiological purposes as a buffer substance from the group of good buffers. With an acid constant of pKs = 7.55 (at 20 °C), it has a good buffering capacity between pH 6.8 and 8.2. The temperature dependence is ΔpKs/ΔT = -0.014 K-1.HEPES is a widely used buffer in biological studies. There is only one restriction in the use of this buffer, because it interferes with the Folin protein assay. In cell culture media, it is employed as a substitute for the bicarbonate buffer at a concentration of 25 mM or as a supplement to the bicarbonate buffer (concentration 10 - 15 mM).The addition of 20 mM HEPES to TBE buffer improves the migration behaviour of certain samples in the SSCP analysis (single-strand conformation polymorphism), with a higher resolution especially if small differences in the sequences between certain bands are wanted (5).