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G4649

Sigma-Aldrich

Glass beads, acid-washed

≤106 μm (−140 U.S. sieve)

Synonym(s):

Glass beads

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10 G
$40.50
100 G
$137.00
500 G
$430.00
1 KG
$707.00

$40.50

Available to ship onMay 01, 2025Details

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10 G
$40.50
100 G
$137.00
500 G
$430.00
1 KG
$707.00

About This Item

UNSPSC Code:
41102422
NACRES:
NB.22

$40.50

Available to ship onMay 01, 2025Details

particle size

≤106 μm (−140 U.S. sieve)

Related Categories

Application

Acid-washed glass beads have been used:

  • in the homogenization of mice retinas to extract and detect phosphatidylinositol[1]
  • to extract RNA from Lactarius quietus ectomycorrhizas (ECMs)[2]
  • to extract cytokinin-binding proteins (CBP) from Synechocystis lysate[3]

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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Certificates of Analysis (COA)

Lot/Batch Number
0000429346
0000429345
0000429344
0000429346
0000429344

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Abdossamad Talebpour et al.
PloS one, 9(7), e102707-e102707 (2014-07-18)
By simultaneously subjecting microbial cells to high amplitude pulsed electric fields and flash heating of the cell suspension fluid, effective release of intracellular contents was achieved. The synergistic effect of the applied electric field and elevated temperature on cell lysis
Gene Transcription in Lactarius quietus-Quercus petraea Ectomycorrhizas from a Forest Soil.
Corty PE, et al.
Applications of Environmental Aquatic Chemistry: A Practical Guide, Second Edition, 74(21), 6598?6605-6598?6605 (2008)
Che-Chou Shen et al.
IEEE transactions on ultrasonics, ferroelectrics, and frequency control, 66(1), 26-37 (2018-11-08)
Hadamard-encoded multipulses (HEM) transmit has recently been utilized for tissue background suppression in ultrasound contrast imaging to enhance the contrast-to-tissue ratio (CTR). Nonetheless, the second-harmonic component in HEM transmit results in residual tissue background after decoding and, thus, compromises the
Yoko Hayashi-Takanaka et al.
Nucleic acids research, 39(15), 6475-6488 (2011-05-18)
Histone modifications play an important role in epigenetic gene regulation and genome integrity. It remains largely unknown, however, how these modifications dynamically change in individual cells. By using fluorescently labeled specific antigen binding fragments (Fabs), we have developed a general
Possible involvement of cyanobacteria in the formation of plant hormonal system
Shevchenko G V, et al.
Russian Journal of Plant Physiology, 61(2), 154-159 (2014)
View All Related Papers

Questions

1–4 of 4 Questions  

  1. Is this soda lime glass? Could you tell me the thermal conductivity of each particle?

    1 answer

    1. Yes, these beads are composed of soda lime glass. Unfortunately, the thermal conductivity has not been determined. The physical properties available are as follows:
      Density.......................................2.5
      Refractive Index..............................1.5-1.52
      Compressive Strength (psi)(average)...........36,000
      Poisson's Ratio (psi).........................0.21
      Rigidity Modulus (psi)........................4.3 x 10E6
      Young's Modulus...............................10 x 10E6
      Hardness (Knoop 100g load)....................515 kg/mm2
      Coefficient of Friction (static)..............0.9-1.0
      Chemical Composition..........................soda-lime silica glass
      Softening Point (dilatometer).................589 deg. C
      Expansion Coefficient (25-300 deg. C).........85 x 10E-7 per deg. C
      Strain Point..................................505 deg. C
      Annealing Point...............................548 deg. C
      Dielectric Constant 1Kc.......................7.6
      D.C. Volume Resistivity (Ohm-cm) 25 deg. C....6.5 x 10E12
      Lost Tangent..1 Kc............................2.0%
      100 Kc..........................1.0%

      Helpful?

  2. Is this hollow structure?

    1 answer

    1. These beads are solid.

      Helpful?

  3. what is the minimal size of these beads ? Or do you have the size distribution curve ?

    1 answer

    1. The particle size distribution and minimum particle size for these beads is not determined. The specification for this product is a bead size equal to or less than 106 microns.

      Helpful?

  4. What is the softening temperature for glass beads?

    1 answer

    1. The softening point for the glass beads is at 589 degrees Celsius.

      Helpful?

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