PYREX Glass Test Tubes 20x150mm, Pack of 6

Description

NC-0996 Pack of 6 PYREX Glass Test Tubes 20x150mm
These PYREX
®
test tubes are made from special tubing to give optimum wall thickness. They are resistant to heat and chemically stable. Rimless tops to prevent chipping. Permanent white marking spot.
Mfr. Name:
Corning
®
Mfr. Cat No
:
#9820-20
Specifications...
Capacity:
34mL
Material:
Borosilicate glass code 7740
Length:
150mm
Outer Diameter:
20mm
Top Style:
Rimless
Bottom Style:
Round
Rubber Stopper No.:
2
Autoclavable:
Yes
Upper Extreme Temp:
490°C (914°F)
Upper Working Temp:
230°C (446°F)
Lower Working Temp:
-230°C (-382°F)
Max. Thermal Shock:
160°C (320°F)
Safety Tips:
Always replace glass laboratory containers that have become scratched or abraded. These defects will make the glass prone to breakage while in use.
The maximum working temperature for PYREX glassware is 490°C. However, once the temperature exceeds 150°C, ensure that heating and cooling is achieved in a slow and uniform manner.
Do not use hydrofluoric or hot phosphoric acid in glass.
Hot alkalis will etch glass.
.