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價(jià)格:電議
所在地:北京
型號(hào):
更新時(shí)間:2019-10-16
瀏覽次數(shù):1321
公司地址:北京市海淀區(qū)京藏高速橋東200米51號(hào)院
周經(jīng)理(女士)
Sigma Glass beads acid-Washed 玻璃珠說明書
產(chǎn)品名稱玻璃珠 :Glass beads, acid-washed (425-600 μm)
CAS編號(hào)N/A
別名玻璃珠;Glass beads, acid-washed
級(jí)別科研級(jí)
純度&分析Glass beads, acid-washed (425-600 μm)
TipsN/A
MDL編號(hào)N/A
EINECS編號(hào)N/A
Beilstein編號(hào)N/A
PubChem編號(hào)N/A
分子式N/A
分子量N/A
儲(chǔ)存條件常溫避光保存。
性質(zhì)N/A
原產(chǎn)地美國(guó)
描述Product Number G 8772
Store at Room Temperature
Product Description
Density: 2.5 g/ml
Refractive index: 1.51-1.52
Compressive strength (psi average): 36,000
Poisson’s Ratio (psi): 0.21
Rigidity Modulus (psi): 4.3 x 106
Young’s Modulus (psi): 10 x 106
Hardness (Knoop 100 g load): 515 kg/mm2
Coefficient of friction (static): 0.9-1.0
Chemical composition: soda-lime silica glass
Softening point (dilatometer): 589 °C
Expansion Coefficient (25-300 °C): 85 x 107 per °C
Strain point: 505 °C
Annealing point: 548 °C
Dielectric Constant: 1 Kc 7.6 D.C.
Volume Resistivity (Ohm-cm): 25 °C 6.5 x 1012
Lost tangent: 1 Kc 2.0% 100 Kc 1.0%.
A bead size of 0.5 mm is recommended for use in
breaking open yeast cells. A protocol for the use of
0.45 to 0.55 mm acid-washed glass beads from Sigma
for cell disruption of yeast cells has been published.1,2
Precautions and Disclaimer
For Laboratory Use Only. Not for drug, household or
other uses.
References
1. Ausbel, F. M., et al., Short Protocols in Molecular
Biology, Greene Pub. Associates and Wiley-
Interscience (N. Y. 1995), 3rd ed., 13-51.
2. Jazwinski, S. M., Preparation of Extracts from
Yeast. Methods in Enzymology, 182, 163 (1990).
供貨狀態(tài)True
參考文獻(xiàn)N/A
類型標(biāo)準(zhǔn)品
安全信息N/A
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