Transparents 50-1000ml beaker chemistry lab borosilicate glass conical flask

Transparents 50-1000ml Beaker chemistry lab borosilicate glass conical Flask   weight: 400; background-color: #ffffff; border-collapse: collapse; width: 750px; height: 63px;" border="1">

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

  Product Description: 1. The conical flask is a conical flask with a large bottom, a stable placement and a small opening, which reduces the amount of volatile substances, and facilitates the installation of other distillation devices, especially cocurrent devices. 2. 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. 3. 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 ℃.   Over the past 20 years, we have gained the trust and support of many customers. Our company has established close cooperative relations with many world famous brands, providing high-quality products and pre-sales and after-sales services for the scientific research and development of all walks of life. In order to respond to the national "ribbon" strategy, we set up an overseas international business department to become a cross-border e-commerce to expand overseas markets and bring high-quality products to overseas customers.   1.Do you provide free samples? A:Yes. We offer free samples, including customized samples. You only need to pay the freight. Sample delivery date is within 1- 3days, customized sample is about 3-7days. 2.Can you provide us a competitive price and good quality products? A:Yes. We have our strict evaluation criteria of quality on our partner factory, and we did complete and detailed market research and priced competitively. 3.What is your terms of payment? A:We accept T/T, Visa, MasterCard, E-checking, L/C, Western Union and more.Please choose your preferred payment method. 4.How to inspect the goods? A:Products will be checked by our QC staff first , then our project manager. Client can come and check by themselves or third-party check is available.

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