The magnetic stirrer is easy to operate and has stepless speed regulation. It can precisely and stably stir the liquid solution in a wide speed range, and is especially suitable for the test of small volume samples. Magnetic stirrers can be divided into three types: non-heating type, heating type, and constant temperature type. Some models have added two-way and multi-head stirring functions. It is a desirable tool for modern petroleum, chemical industry, medicine and health, environmental protection, biochemistry, experimental analysis, education and scientific research.

| model | HJ-1(500ml) | HJ-1(1000ml) |
| Maximum stirring volume | 500ml | 1000ml |
| stirring speed | 2400rpm | 2400rpm |
| Working disc size | Φ90m | Φ90m |
| Dimensions | 130*150*100mm | 240*190*130mm |