The formula for calculating the air jet sieve airflow screening instrument 510-177 was developed in 2017. As we all know, after screening, it is necessary to sample and weigh the powder, and calculate the percentage content of the screened sample. Huimeike air jet sieve airflow screening instrument is no exception. After the instrument disperses and separates the sample, large particles remain on the sieve, while small particles are collected in the HMK-10 series sample collector of Huimeike. The subsequent screening result calculation is automatically completed by the instrument, and the formula is the weight on the sieve divided by the total weight of the sieve. After the calculation is completed, depending on the model, the result can also be judged whether it passes or not, and the test results can be stored and printed. Huimeike's development in the field of air jet screening and airflow screening began in 2017, while accumulating user testing experience for improvement and upgrading. At present, the number of users in China has exceeded 130, which is not easy in the niche industry of air jet screening and airflow screening equipment.

Pharmaceutical preparations are formulations of drugs that are suitable for clinical requirements and meet certain quality standards. Any drug used in clinical practice is formulated into a certain dosage form. The production process of formulations is an organic joint operation of various operating units under the guidance of GMP regulations. The production operation units of different dosage forms are different, and even the same dosage form may have different operation units due to different process routes. Referring to the classification of pharmaceutical preparations and GMP, the preparation operation units are classified according to oral solid preparations such as testing microcrystalline cellulose and lactose using the Huimeike HMK-200 air jet sieve, sterile preparations, traditional Chinese medicine preparations such as testing Sanqi powder and Tianma powder using the Huimeike HMK-200 air jet sieve, and other preparations. Each dosage form is introduced separately according to its process technology, production equipment, workshop design, and engineering verification.

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