Sigma Glass beads acid-Washed 玻璃珠说明书

产品名称玻璃珠 ：Glass beads, acid-washed （425-600 μm）
CAS编号N/A
别名玻璃珠;Glass beads, acid-washed
级别科研级
纯度&分析Glass beads, acid-washed （425-600 μm）
TipsN/A
MDL编号N/A
EINECS编号N/A
Beilstein编号N/A
PubChem编号N/A
分子式N/A
分子量N/A
储存条件常温避光保存。
性质N/A
原产地美国
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）.
供货状态True
参考文献N/A
类型标准品
安全信息N/A

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