1.1 Development history
1. In 1886, E. Goldstein observed positively charged particles in a low-pressure discharge experiment.
2. In 1898, W. Wen discovered that the positively charged particle beam was deflected in the magnetic field.
3. The father of modern mass spectrometry: JJ Thomson (won the Nobel Prize in Physics in 1906).
4. In 1922, FWAston [British] won the Nobel Prize in Chemistry for inventing mass spectrometers. In 1942, the first commercial mass spectrometer.
5. Since the 1950s, research on organic mass spectrometry (organic ion fragmentation mechanism, using mass spectrometry to infer organic molecular structure)
6. Various ion source mass spectrometry, online technology research and its application in the research of biological macromolecules (CI, FD, FAB, ESI-MS, etc.)
1.2 Features:
1. High sensitivity (a few micrograms or less samples, the detection limit can reach 10-14 grams)
2. The only way to determine the molecular formula.
3. Fast analysis speed (a few seconds)
4. Can be used in combination with chromatography.
Packaging tape is used around the world for enclosing and securing containers for transport, retail sales, and storage. Packaging tape is made from varied materials using many different adhesives to adhere to containers. The most used packaging tapes are made from polypropylene with an acrylic adhesive and come in either clear or tan colors.
Packaging Tape is an important part of any packaging operation. Companies using boxes, envelopes, or any other containers for packaging normally use tape for sealing. Tapes specifically made for packaging come in a variety of lengths, colors, and widths. They also vary in materials and adhesives they are made from. Below is a brief explanation of the types of tapes we offer and what they are recommended to be used for.
Custom tape
Custom Tape,Custom Packing Tape,Custom Printed Tape,Custom Printed Tape
Shenzhen Chengxing Packing & Material Co.,Ltd Shenzhen caomu new material products Co., Ltd , https://www.cxpack.com
