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Lab glassware |
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| ¡¬LAB GLASSWARE |
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| ¡¡Laboratory Glasswre included in ths catalogue
are manufactured of different special glass of high quality
according to different requirements of the various items. The
general characteristics as well as the principal physical and
chemcial properties of these glass are described as follows: |
| ¡¬GG17 Glass |
¡¡GG17GLASS is a new special borosilicate glass
of excellent chemical and physical properties with a silica
content of 80 %. It is hightly stable in structure and , as
a result, has marked mechanical strength and very high resistance
against chemical attacks. Furthermore,due to its low linear
coefficient of thermal expansion, this glass is cable of withstanding
high thermal shock and possesses good moulding ability. It is
and excellent material for making intricate lamp - blown articles
and laboratory apparatus where external heating is necessary.
Principal Physical and Chemical Properties |
| SiO2
Conetent |
>80% |
Linear Coefficient
of Thermal Expansion |
3.3¡Á10-7K-1 |
| Strain Point |
520¡æ |
Acid Resistance |
Crade 1 |
| Softening
Point |
820¡æ |
Alkali Resistance |
Grade 2 |
| Annealing
Point |
560¡æ |
Thermal
Shock Resistance |
300¡æ |
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| ¡¬"95"
GLASS |
¡¡This is a low alkali , high borosilicate
content glass without calcium, magnesium,zinc and lead elements.
it possesses excellent chemical and physical properties and
is used for making various kinds of laboratory glassware.
Principal Physical and Chemical Properties |
| SiO2
Conetent |
>79% |
Linear Coefficient
of Thermal Expansion |
3.9¡Á10-6K-1 |
| Strain Point |
520¡æ |
Acid Resistance |
Crade 1 |
| Softening
Point |
755¡æ |
Alkali Resistance |
Grade 2 |
| Annealing
Point |
540¡æ |
Thermal
Shock Resistance |
220¡æ |
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| ¡¬NEUTRAL GLASSS |
¡¡Neutral Glass is a kind of glass
with low borosilicate¡¢sodium and calcium,which possesses execllent
chemical and physical properties and widely made for filtering
flask¡¢aspirator and gas generator,ect.
Principal
Physical and Chemical Properties |
| SiO2
Conetent |
75.5% |
Linear Coefficient
of Thermal Expansion |
7.5¡Á10-6K-1 |
| Softening
Point |
670¡æ |
Hydrolytic
Resistance |
Crade 1 |
| Annealing
Point |
510¡æ |
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| ¡¬NORMAL GLASS (Including
Amber Glass) |
¡¡Normal glass is a soda - lime glass of high quality,possessing
excellent chemical properties and high mechanical-strength,for
making heavy wall articles. Volumetric glasswares¡¢desiccators¡¢bell
jars¡¢reagent bottles¡¢specimen jars¡¢etc,made of this glass can
well withstand chemical attacks.
Principal
Physical and Chemical Properties |
| SiO2
Conetent |
75% |
Linear Coefficient
of Thermal Expansion |
8.8¡Á10-6K-1 |
| Softening
Point |
668¡æ |
Density |
2.38g/cm3 |
| Annealing
Point |
470¡æ |
Hydrolytic
Resistance |
Grade 4 |
| Strain Point |
430¡æ |
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| ¡¬SOFT GLASS (Including
Amber Glass) |
¡¡Soft Glass is another high grade
soda - lime glass with excellent chemical properties . it is
suitable for making volumetric glassware such as measuring pipette¡¢burette,etc.
Principal Physical and Chemical Properties |
| SiO2
Conetent |
74% |
Linear Coefficient
of Thermal Expansion |
8.9¡Á10-6K-1 |
| Softening
Point |
698¡æ |
Density
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2.39g/cm3 |
| Annealing
Point |
480¡æ |
Hydrolytic
Resistance |
Grade 3 |
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