Model Number: Glass hollow plug 50/42
Glass stopper,Glass hollow plug,Joint 50/42,Grinding flat plug,Hollow plunger
Model Number: Three ground mouth reaction bottle cap
Three ground mouth reaction bottle cap,200mm/230mm flange outer diameter,Straight shape,Mid 50/42,Side 24/29,Glass cover
1.Glass instruments made with the excellent properties of glass are widely used in various laboratories such as chemical laboratories, medical laboratory, biological laboratory, scientific research laboratory and teaching laboratory.
2. Potassium borosilicate glass has a very low coefficient of thermal expansion, about one-third of ordinary glass, and can withstand temperature changes of about 200 ℃.
3. It is a kind of low alkali high borosilicate glass, does not contain calcium, magnesium, zinc and lead, has better physical and chemical properties, strong resistance to chemical corrosion, used in the production and processing of heat-resistant glass instruments and other demanding utensils.
|Silicon content: 80.7%||Strain temperature: 540 ℃|
|Annealing temperature: 560 ℃||Softening temperature: 820 ℃|
|water resistance: class I||Annealing temperature: 560 ℃|
|Heat resistant strain temperature (glass rod method): 300 ℃|
|Line thermal expansion coefficient: 20-300℃ 3.3*10 -6K-1|