borosilicate 3.3 glass tubing, glass tube

Acid resistance Class                 ISO1776-First Class

Hydrolytic resistance at 121        ISO720-HGA 1

Hydrolytic resistance at 98          ISO719-HGB 1

Chemical Property

Al₂O_{3                     2}

Na₂O+K₂O        4

B₂O_{3                     13}

SiO_{2                      81}

Main Composition

Refractive index                                                          0.92

Mean thermal conductivity(20-100)                              1.2w/m²k

Density at 20                                                             2.23

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