Borosilicate glass test tubes

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Product: Borosilicate glass test tube. Made of borosilicate glass LBG 3.3. Without rim.

LBG 3.3 is a borosilicate glass with a minimum silica content of 80% and a very low coefficient of expansion (3.3-10-6 K-1) which belongs to the group of "3.3" borosilicates as defined in ISO 3585. It is used in products where chemical resistance, mechanical strength and resistance to sudden changes in temperature must be combined, and because of this unique combination of properties it is the reference glass type from which most laboratory products are made.

BOROSILICATE GLASS TEST TUBES MEASURES

capacity Outer Ø(mm) l (mm) thickness (mm)
8 ml 13 100 0,8 – 1,0
10 ml 16 100 1.0
19 ml 16 150 1.0

PHYSICAL AND CHEMICAL PROPERTIES OF BOROSILICATE GLASS LGB 3.3

Coefficient of linear expansion (@ 20/300 ºC): 3.3-10-6 K-1
Annealing temperature (Strain point): 520 °C
Annealing point temperature: 560 ± 10 °C
Softening temperature (Softening point): 820 ± 10 °C
Density: 2,23 ± 0,02 g/cm³
Hydrolytic resistance (according to ISO 719, water at 98 ºC): Class 1
Hydrolytic resistance (according to ISO 720, water at 121 ºC): Class 1
Acid resistance (according to ISO 1776): Class 1
Alkali resistance (according to ISO 695): Class 2
Typical composition
80,4% by weight SiO2
13,0% by weight B2O3
4,2% wt/wt Na2O
2,4% by weight Al2O3

Request the product documentation (Technical Data Sheet, Safety Data Sheet) through one of the through one of the following ways contact
Test Tube Measurement
D12mm L100mmm
D16mm L100mm
D16mm L150mm
Quantity
10
250

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