Site Information

 Loading... Please wait...
  • Toll free: (866) 326-5412
  • My Account
  • Gift Certificates
  • A photograph of a small pile of CG-1101 borosilicate glass beads.

Glass beads, Borosilicate, 1 lb

Item #: CG-1101

Normal Availability: 1-3 business days

Product Description

These solid borosilicate spheres can be used as distillation column packing, boiling stones, or to provide support for chromatography columns used in gel filtrations. These beads have excellent chemical resistance and are easier to clean than boiling chips or glass helices. They are packed in plastic 1 lb jars. These are available in 1, 2, 3, 4, 5, or 6 mm diameters. These beads are fairly monodisperse as they are manufactured from cut rods.

Note: the item # suffix and bead size do not correspond to each other (the CG-1101-02 is a 1 mm bead etc.) for historical reasons.  The sizes and suffixes given here are correct.

Technical Specifications
Manufacturing process Cut from rods, blown and pressed
Diameter and sphericity variation Maximum ±10% of bead diameter
Linear expansion coefficient within range 20 - 300 °C 3.3 ± 0.1 x 10-6K-1
Transformation temperatures (DIN 52324) 530 °C
Low degree of cooling 510 °C
High degree of cooling 568 °C
Softening point 815 °C
Processing temperature 1,264 °C
Density 2.23 gm/cm3
Temperature change constant (DIN 52325) 250 °C
Modulus of elasticity 6.3 x 10-5kp/cm2
Heat conduction at 20 °C 1.00 kcal/(m h °C)
Temperature for 0-108 Ohm-cm 248 °C
Dielectric constant @ 1 MHz and 25 °C 4.6
Dielectric loss angle at @ 1 MHz and 25 °C 55
Point of refraction (He d-line) 1.473 nd
Resistance to water (DIN 12111) in 0.01 N HCl per gram of glass granules 0.026
Resistance to figured as equivalent Na 20/g glass granules 0.008
Hydrolitical Class 1
Resistance to acid (DIN 52322) in mg weight loss per 100 cm2 0.35
Acidity Class 1
Resistance to alkali (DIN 52322) in mg weight loss per 100 cm2 134
Alkaline Class 2

Other Details

Manufactured in: USA

Product Reviews

Write Review

This product hasn't received any reviews yet. Be the first to review this product!

Find Similar Products by Category