The HMKFlow 329 Angle of Repose Tester evaluates the flow characteristics of powders by determining the angle formed between the powder and a horizontal surface. It can also measure powder flowability by timing how long it takes for the powder to exit a funnel.
In contrast to the AIMSIZER Powder Comprehensive Characteristics Tester, which is capable of measuring up to 15 different physical properties, the HMKFlow 329 is limited to assessing only the angle of repose and the flow rate of the powder to determine its flowability.
This instrument is equipped with an angle of repose funnel, auxiliary funnels of various diameters, a testing platform, a stand, an electronic height gauge, and optional software for calculation and evaluation.
Its specifications include both the angle of repose funnel and auxiliary funnels constructed from 304 stainless steel, an electronic height gauge with a precision of up to 0.05 mm, and software that can automatically compute and evaluate powder flowability. It adheres to several international standards, such as the United States Pharmacopeia (USP), European Pharmacopoeia (EP), ISO 4324, and ISO 8398.
- Test range: Angle of repose, flow rate
- Angle of repose funnel: 40 °
- Volume of angle of repose funnel: 450 mL
- Height of the angle of the repose funnel: 150 mm
- Test platform diameter: 100 mm
- Orifice diameter of angle of repose funnel (Tpp/bottom): 110/30 mm
- Auxiliary funnel orifice diameters (Top/Bottom): 30/10 mm /1 pc; 30/15 mm /1 pc; 30/25 mm /1 pc
- Height gauge accuracy: 0.05 mm
- Dimensions: 20 × 26 × 40 cm / 8 kg
- Height from funnel to platform: 75 mm
- Result processing method: Automatic calculation
- Result output method: Automatic calculation and evaluation
To conduct a test, pour the sample into the repose angle funnel, and if necessary, stir with a stirring rod. Once the powder has flowed onto the testing platform and has formed a conical shape, use an electronic height gauge to measure the height of the cone. Enter the height measurement into the software to calculate the repose angle of the powder and evaluate its flowability. Furthermore, by pouring a defined amount of sample into the funnel, the powder flow rate can be calculated from the recorded flow time.