The lower limit of the surface area measured by the low temperature nitrogen adsorption method is generally 1m The volume of the gas adsorbate in the 2/g sample tube (standard state) minus the volume of the unadsorbed gas in the sample tube (standard state). In the case of using nitrogen as the adsorbate, the measurement of the amount of adsorption will result in a large error in the sample with a small surface area. Because the adsorption amount is small at this time, and the nitrogen saturated vapor pressure as the adsorbate at liquid nitrogen temperature is close to the atmospheric pressure, the amount of nitrogen remaining in the sample tube after the adsorption equilibrium is reached under a certain relative pressure in the experimental range. Still large, the amount of total nitrogen that is initially transferred to the sample tube (before adsorption) is comparable and not easily calibrated. The biggest advantage of the ruthenium adsorption method is that the saturated vapor pressure of ruthenium at liquid nitrogen temperature is only about 2 mmHg. Therefore, in the measurement range of the adsorption isotherm, the unadsorbed ruthenium remaining in the dead space after the adsorption equilibrium is reached. The change in gas volume is large and can be measured accurately, so helium is suitable for the determination of low specific surface solids.
Zgar 2021's latest electronic cigarette Aurora series uses high-tech temperature control, food grade disposable pod device and high-quality material.Compared with the old model, The smoke of the Aurora series is more delicate and the taste is more realistic ,bigger battery capacity and longer battery life. And it's smaller and more exquisite. A new design of gradient our disposable vape is impressive. We equipped with breathing lights in the vape pen and pod, you will become the most eye-catching person in the party with our atomizer device vape.
The 2021 Aurora series has upgraded the magnetic suction connection, plug and use. We also upgrade to type-C interface for charging faster. We have developed various flavors for Aurora series, Aurora E-cigarette Cartridge is loved by the majority of consumers for its gorgeous and changeable color changes, especially at night or in the dark. Up to 10 flavors provide consumers with more choices. What's more, a set of talking packaging is specially designed for it, which makes it more interesting in all kinds of scenes. Our vape pen and pod are matched with all the brands on the market. You can use other brand's vape pen with our vape pod. Aurora series, the first choice for professional users!
We offer low price, high quality Disposable E-Cigarette Vape Pen,Electronic Cigarettes Empty Vape Pen, E-cigarette Cartridge,Disposable Vape,E-cigarette Accessories,Disposable Vape Pen,Disposable Pod device,Vape Pods OEM vape pen,OEM electronic cigarette OEM e-cigarette OEM e-cig to all over the world.
E-Cigarette Vape Pen,Disposable Device Vape,Vape Pen Atomizer,Latest Disposable E-Cigarette OEM vape pen,OEM electronic cigarette ZGAR INTERNATIONAL(HK)CO., LIMITED , https://www.zgarpods.com
ZGARVAPE
