4-hydroxyethylpiperazin e ethanesulfonic acid (HEPES) is an important hydrogen ion buffering agent with good buffering capacity in the pH range of 6.8-8.2, which can control a constant pH for a long time. A concentration of 10-50mmol/L and a general culture medium containing 20mmol/L 4-hydroxyethylpiperazin e ethanesulfonic acid can provide good buffering capacity and have no toxic effect on cells.
1.Used as a biochemical reagent.
2.Biological buffering agents; Reaction buffer, pre hybridization buffer, and hybridization buffer for separating and analyzing RNA nuclear components; Used for RNA and T4RNA.
3.Molecular biology level is used to perform RNA3 '- end labeling using T4RNA ligase in Chemicalbook, and to isolate and analyze the reaction buffer components, pre hybridization buffer, and mild hybridization buffer components of nuclear RNA.
4.Cell cell adhesion, short-term cell aggregation culture, buffer solution used for cleaning tissues and cells.
HEPES (4-hydroxyethylpiperazin e ethanesulfonic acid) is a non-ionic zwitterionic buffer with high polarity, which is inert to various chemical reagents and enzymes, does not participate in or interfere with the process of biochemical reactions, and has no inhibitory effect on enzyme chemical reactions. Therefore, it can be specifically used for research on organelles and highly denatured, pH sensitive proteins and enzymes.
Loaʻa iā mākou nā hale hana kiʻekiʻe me ka pilina hohonu, hiki iā ia ke hāʻawi iā ʻoe i nā huahana kiʻekiʻe a me nā kumukūʻai hoʻokūkū. A hiki iā mākou ke hāʻawi i nā uku no nā kūʻai nui. A ke hui pū nei mākou me nā ʻoihana lawe ukana ʻoihana he nui, hiki ke hāʻawi i nā huahana me ka palekana a me ka maʻalahi i kou mau lima. ʻO ka manawa hoʻouna ma kahi o 3-20 mau lā ma hope o ka hōʻoia ʻana o ka uku.
Items |
Kūlana |
Ka hopena |
Ka nana aku | White crystalline powder | Kūlike |
Hoʻāʻo | ≥99.50 | 99.98 |
Solubility(1M aq) | Clear,colorless solution | Kūlike |
PH(1% aq.) | 4.80-5.60 | 5.25 |
Heavy metals,ppm | ≤10.0 | Kūlike |
Loss on drying,% | ≤1.00 | 0.11 |
Ultraviolet absorbance 260nm(1M aq) | ≤0.100 | 0.020 |
Ultraviolet absorbance 280nm(1M aq) | ≤0.070 | 0.013 |
Fe3+ ,ppm | ≤5 | Kūlike |
SO42- ,% | ≤0.05 | Kūlike |
Ka hopena | Qualified |
1. He hale hana ʻoe a he hui kālepa paha?
He compnay mākou e hoʻohui i ka ʻoihana a me ke kālepa, e hāʻawi ana i ka lawelawe hoʻokahi. Hiki ke ʻae ʻia ʻo OEM.
2. Hāʻawi anei ʻoe i nā laʻana? He manuahi a keu paha?
Free samples.The sample's freight fee Pono e uku ma kou aoao.
3. Loaʻa iā ʻoe nā palapala hōʻoia e pili ana i ka mana maikaʻi?
ISO 9001: 2008 palapala hōʻoia e hōʻoia i ka maikaʻi.
4. He aha kaʻu e hāʻawi ai e kiʻi i kahi ʻōlelo?
E haʻi mai ʻo Pls iā mākou i ke ʻano huahana āu e pono ai, ka nui o ke kauoha, ka helu a me nā koi kikoʻī. E hana ʻia ka ʻōlelo no kāu kuhikuhi i ka manawa.
5. He aha ke ʻano o ka uku uku āu e makemake ai? He aha ke ʻano o nā ʻōlelo i ʻae ʻia?
ʻAe ʻia nā ʻōlelo hoʻouna: FOB, CFR, CIF, EXW;
ʻAe ʻia ke kālā uku:USD;
ʻAno uku i ʻae ʻia: T / T, Western Union; Paypal, Hōʻoia Kūʻai.
ʻŌlelo i ʻōlelo ʻia: English.
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