Laboratory News 27 Jul 2022 Brief description of the types of PET nucleating agents and the effect of nucleating agents on the crystalline properties of PET Brief description of the types of PET nucleating agents and the effect of nucleating agents on the crystalline properties of… Longchang Chemical
Laboratory News 6100-Appearance-2 09 Apr 2022 What knowledge should frontline workers in chemical plants have? What knowledge should frontline workers in chemical plants have? Develop good operational behavior (1) Routine inspection before operation The… Longchang Chemical
Laboratory News 28 Mar 2022 How can chemical companies prevent dust poisoning hazards? How can chemical companies prevent dust poisoning hazards? Dust-proof and anti-virus management 1. Enterprises should pay attention to the key… Longchang Chemical
Laboratory News 05 Jan 2022 How to prepare test samples? What machines are there? Nuclear magnetic resonance spectrometer:(1) The purity of the sample submitted for inspection should generally be >95%, free of iron filings,… Longchang Chemical No Comments
Laboratory News 03 Jan 2022 Chemical companies are entering a new stage of high-quality development With the transformation and relocation of hazardous chemical companies entering a critical period this year, the process of retreating from… Longchang Chemical No Comments
Laboratory News 15 Dec 2021 Can the reagents that have been stored for a long time be used? How to determine the expiry date of the reagent The effective date of the reagent is an important factor that… Longchang Chemical No Comments
Laboratory News 09 Dec 2021 How to store laboratory chemical reagents? How to store laboratory chemical reagents? Chemical reagents must be stored properly, because the quality of the reagents directly affects… Longchang Chemical No Comments
Laboratory News 08 Dec 2021 There is a risk of explosion when m-CPBA and DMF react together DMF is one of the most widely used solvents in organic synthesis, and is also known as a universal solvent.… Longchang Chemical No Comments
Laboratory News 06 Dec 2021 In the organic synthesis experiment, how many tricks have you done for the common mistakes of the newcomers? When climbing the board, forget to take out the TLC board until the solvent climbs to the top.Forgot to weigh… Longchang Chemical No Comments
Laboratory News 02 Dec 2021 Which of the four realms of scientific research do you belong to? There are four realms in life: natural realm, utilitarian realm, moral realm, heaven and earth realm. The following is Mr.… Longchang Chemical No Comments
