Seeking simplification or alternatives for alkaline particle analysis methods

This post was last edited by qugd on 2024-2-29 at 18:23. For the determination of the acidity or alkalinity of strong acids and strong bases, especially solid acids and bases, any method other than titration is impractical and unreliable in terms of both method implementation and instrument requirements. There are online titrators available, but the dissolution process of the samples requires a special design. This is because it involves quantitative sampling, dissolving in a fixed volume, diluting concentrated samples in a fixed ratio, and then performing acid-base titration using an online automatic titrator. If the analysis is fast, I estimate it will take about 15 to 30 minutes; if it’s slow, it might take up to 60 minutes. Grain alkali analysis should fall under product quality control analysis, not process production analysis – isn’t a very fast analysis speed required for it? During the production of granular caustic and flake caustic, due to their strong water absorption and strong carbon dioxide absorption properties, it may be impossible to accurately determine their purity through direct analysis; this is a challenge that may not be overcome in the design of analytical instruments. Or use instruments with a relatively high price, designed and manufactured specially, for such analysis tasks that actually do not require significant investment.

Alkali particle analysis is divided into in-process analysis and final product analysis; I am referring to the in-process analysis, which requires speed and accuracy. We also use refractometers to analyze the main components in samples such as liquid alkali, hydrogen peroxide, and saline, with extremely high accuracy. You might be involved in production processes and not familiar with such instruments.

I don’t know much about analytical instruments, especially those of your company; I’ve never even seen them before.

The concentration of certain media is indeed related to refractivity, but obtaining the purity of the base particles through refractive index still requires certain conditions, such as the stability of the impurities present. If the substance to be tested is a sealed packet of granular alkali sample, it seems that ensuring accurate sample handling and weighing alone will be quite challenging; once the titration begins, however, it won’t take long. If the substance to be tested is a centralized alkali solution, and given the appropriate conditions, after multiple comparisons with the results of titration experiments and if the error remains within the limits permitted by the manufacturing process, it may be usable. However, I have almost no knowledge of refractometers; I just have a general idea of what they are. Is the poster possibly selling refractometers? ;P

I don’t sell them; a refractometer is indeed a great device, and you should give it a try if you get the chance. Our central control systems for hydrogen peroxide, liquid alkali, brackish water, etc., abandon the traditional titration method, offering high efficiency and accuracy. I didn’t say to use a refractometer for analyzing granular alkali; I was looking for a simpler and more convenient method for analyzing it on the forum.