Product description: 1.Purity: SiO2 content is more than 99.9%, transparent quartz glass tube can reaches above 99.95%. 2.Temperature : Softening point temperature is about 1730 degrees Celsius ,1150 ...View More
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High Purity Quartz 2.2g/Cm3 Science Lab Glassware With Grinding Mouth And Grinding Stopper