510-36 0982 Test method of particle size and particle size distribution in Chinese Pharmacopoeia 2015 edition-HMKTest Air Jet Sieve
It is stipulated in Chinese pharmacopoeia 2015 edition that Air jet sieving method should be used in terms of samples with particle size less than 75μm. See the details below Chinese pharmacopoeia 2015 edition “particle size and particle size distribution test method”. In addition to meeting the requirements of Chinese pharmacopoeia, HMKTest HMK-200 Intelligent Touch Screen Air Jet Sieve 051598 and Economical Air Jet Sieve 051098 meet the requirements of both American pharmacopoeia and European pharmacopoeia. It is widely used in the world and has a large number of customers from pharmaceutical companies and other industries.
510-36 0982 Test method of particle size and particle size distribution in Chinese pharmacopoeia 2015 edition-HMKTest Air Jet Sieve
Air jet sieving method
Only use one sieve every time. If the particle size distribution needs to be determined, it should be carried out from the sieve with the smallest pore size. Except as otherwise herein provided, take the drug sieve with a diameter of 200mm and weigh it. According to the volume density of the test product, also known as bulk density, apparent density, pine density and so on (HMKTest is also a world-class volume density meter manufacturer, more than 95% of the products are supplied to foreign customers), the test product 25-100g is taken, placed in the drug sieve, and capped on the sieve. Set the pressure and air jet for 5 minutes. Take the sieve and weigh. According to the weight difference before and after sieving, calculate the proportion (%) of particles and powder on the drug sieve. Repeat the above operation until the two sieving, the difference in the weight of particles and powder left on the drug sieve should not exceed 5% of the weight of the previous particles and powder left on the sieve, or the difference in the two weights should not be greater than 0.1g. If the weight of particles and powders left on the sieve is less than 5% of the sample, the weight difference of two consecutive times should not exceed 20%.
AIR-200 Air Jet Sieves by HMKTest It uses the negative pressure generated by the vacuum cleaner to generate force for screening, and has excellent repeatability
In conclusion, the air jet sieving method is more suitable for beginners to operate than other methods such as light scattering method, which is simple and feasible. Laser particle size analyzer, by contrast, is more complex, error-prone, and error-prone than air jet sieving calculations because they require the powder to be placed in a liquid first, which changes the physical properties of the drug. Sieving method is the final standard for testing laser method, for the standard samples used in the laser method are traceable to the sieving method.
Therefore, HMK-200 Intelligent Touch Screen Air Jet Sieve is more and more widely used in the pharmaceutical industry.
Overview
HMK-200 Air Jet Sieve is a laboratory air flow sieve used to measure the particle size distribution of powders. It is composed of operation panel, sieve plate, standard sieve, nozzle, motor and vacuum. It is controlled through 7 inch LCD screen. Display the working status of the instrument in real time. The instrument can be connected to the electronic scale through the RS-232 interface. The built-in microprocessor can automatically calculate the results. The manufacturer and provider is Dandong HMKTest Instrument Co, Ltd. The HMK-200 Air Jet Sieve is designed and manufactured by international advanced sieving technology. The main parameters and performance of the instrument are consistent with the imported instrument. Moreover, the price of the instrument is reasonable and the supporting services are perfect. HMKTest has become the world’s preferred brand for laboratory particle size sieving analysis and procurement.
Operating principle
The nozzle with patented technology converts the negative pressure generated by the vacuum cleaner into kinetic energy, drives the powder up and collides with the sieve cover. The powder removed from the aggregates is then sucked into the standard sieve under negative pressure. Larger particles are left on the sieve and smaller particles are sucked into the vacuum cleaner to achieve the ideal sieving of powders.
Specifications
- Test range：5-5,000 um
- Sieve component：1-2,000 g
- Standard sieve diameter：200 mm/75 mm
- Spray nozzle rotation speed：low, medium, high or 0-35 rpm stepless speed change adjustable
- Timing range：fixed model 2-10 min optional or continuous mode switching
- Pressure range：0-10 Kpa
- Spray nozzle clearance：2 mm
- Instrument dimension：58x35x35 cm
- Voltage：220 V/50 Hz/25 W
- Weight：8 Kgs
Product feature
- 7 inch large screen, LCD display, touch screen click to accurately control sieving operation.
- Negative pressure pre-sieving calibration, real-time monitoring in the sieving, and real-time adjustment to ensure the sieving accuracy.
- The nozzle speed can be arbitrarily set within a reasonable range, and medium, low and high grades can be selected to improve efficiency.
- The sieving time is optional in conventional time, and the cycle sieving mode can be set for easy operation.
- The world’s advanced open mesh function effectively prevents particles from clogging the sieve mesh
- Automatically calculate the percentage of materials under the sieve after sieving
- The international advanced sample collection device enable the under the sieve particle collection rate reaches 99.99%.
Application fields
Dry powders that cannot be analyzed by ordinary sieve analysis：powder mass is light, easy to static electricity, particles which are easy to agglomerate.
It is widely used to sieve powders below：medicine, flour, seasoning, chemical powder, cement, graphite, coal ash, coating, clay powder, resin, rubber, plastic and so on.