Glass Test Tube/Borosilicate Glass Tube

• Disposable: Non-Disposable
• Certification: ISO
• Material: Glass
• Capacity: Customized
• Type: Borosilicate
• Transport Package: Cartons
• Model NO.: Customized
• Specification: O. D 4mm-88mm
• Trademark: SNAIL GLASS
• Origin: China
• HS Code: 70109090
• Production Capacity: 5000 Tons/Year

Product Description

Raw Material:
Borosilicate glass 3.3
Application: for manufacturing test tube, laboratory glassware, etc
Package: cartons or pallets

No.	Physical Performance	Numberical Value	Unit
1	Coefficient of Mean Linear Thermal Expansion(20ºC-300ºC)	3.3±0.1	10-6/K
2	Transformation Temperature	525±15	ºC
3	Softening Point	820±10	ºC
4	Working Point	1260±20	ºC
5	Density at 20ºC	2.23±0.02	g/cm3
6	Mean Thermal Conductivity (20ºC-100ºC)	1.2	w/m2k
7	Refractive Index	0.92

  

Chemical Data
Hydrolytic Resistance at 98ºC	ISO719-HGB 1
Hydrolytic Resistance at 121ºC	ISO720-HGA 1
Acid Resistance Class	ISO1776-First Class
Chemical Composition
SiO2	81%
B2O3	13%
Na2O+K2O	4%
Al2O3	2%

Production:

Type:
   Round bottom or flat bottom
     With rim or without rim
     Screw mouth or flat mouth
     Printing or not
     With cork or plastic cap




Package: