磁力搅拌器的?磁子有多种规格，最常见的是 A、B、C 三大系列：A 型为菱形/橄榄形，B 型为圆柱带横杠，C 型为圆柱无横杠，不同厂家的磁子规格略有差异，选购时需核对具体尺寸。上海司乐生产的磁子规格大致有以下这些：
| 上海司乐仪器有限公司四氟封闭式磁性搅拌子规格表 | ||||||
| 耐高温型 | 常温型 | |||||
| 型号 | 外形尺寸（直径X长度） | 型号 | 外形尺寸（直径X长度） | 型号 | 外形尺寸（直径X长度） | |
| E510 | 5X10mm | A05 | 6X5mm | B500 | 9X50mm | |
| E518 | 5X18mm | A102 | 6X10mm | B550 | 12X55mm | |
| E1045 | 10X45mm | A150 | 7X15mm | B565 | 9X56mm | |
| B614 | 6X14mm | A200 | 8X20mm | B660 | 9X66mm | |
| B620 | 6X20mm | A250 | 9X25mm | B998 | 10X100mm | |
| B820 | 8X20mm | A300 | 10X30mm | B15125 | 15X125mm | |
| B628 | 6X28mm | A350 | 12X35mm | B1500 | 18X150mm | |
| B828 | 8X28mm | A400 | 15X40mm | C06 | 3X6mm | |
| B835 | 8X35mm | A500 | 17X50mm | C30 | 8X30mm | |
| B740 | 7X40mm | A600 | 18X63mm | C35 | 8X35mm | |
| B845 | 8X45mm | A700 | 18X70mm | C40 | 8X40mm | |
| B1250 | 12X50mm | A700 | 23X70mm | C45 | 8X45mm | |
| B1080 | 10X80mm | A1000 | 25X100mm | C50 | 8X50mm | |
| B15100 | 15X100mm | A2000 | 30X200mm | C60 | 8X60mm | |
| F509 | 5X9mm | B06 | 3X6mm | C70 | 8X70mm | |
| F616 | 6X16mm | B100 | 4X10mm | C80 | 10X80mm | |
| F923 | 9X23mm | B120 | 6X12mm | C100 | 4X10mm | |
| F1030 | 10X30mm | B150 | 6X15mm | C150 | 6X15mm | |
| F1335 | 13X35mm | B200 | 8X20mm | C180 | 7X18mm | |
| F2060 | 20X60mm | B250 | 7X25mm | C200 | 8X20mm | |
| D310 | 3X10mm | B275 | 9X28mm | C220 | 7X22mm | |
| D414 | 4X14mm | B300 | 8X30mm | C250 | 8X25mm | |
| D618 | 6X18mm | B330 | 7X34mm | C263 | 7X27mm | |
| D825 | 8X25mm | B360 | 9X36mm | H700 | 15X70mm | |
| C820 | 8X20mm | B400 | 8X40mm | H600 | 13X60mm | |
| B407 | 8X38mm | H420 | 13X42mm | |||
| B450 | 9X45mm | H330 | 13X33mm | |||
| H260 | 13X26mm | |||||
| 花型40 | 7X40mm | |||||
