Specification for diamond micropowder GB/T 23536-2009 specifies that the diamond micropowder has the code name MPD and the particle size is M0/0.5~M36/54. The standard refers to the JB/T7990-1998 standard, which specifies the diamond micron particle size and size range standards as shown in the table:
Diamond micron particle size standard（JB/T 7990-1998）μm | ||||
Particle size | Nominal size range D | Coarse grain maximum size D max | Fine particle minimum size D min | Particle size composition |
| M0/0.5 | 0～0.5 | 0.7 | --- | 1. No particles larger than the maximum size of the coarse particles. 2. The coarse content should not exceed 3%. 3. Fine particles content: fine particle size within M3/6 shall not exceed 8%; fine particle size from M4/8 to M10/20 shall not exceed 18%; fine particle size from M12/22 to M36/54 shall not exceed 28%. 4. The finest content: no more than 2% of each particle size. |
| M0/1 | 0～1 | 1.4 | --- | |
| M0.5/1 | 0.5～1 | 1.4 | 0 | |
| M0.5/1.5 | 0.5～1.5 | 1.9 | 0 | |
| M0/2 | 0～2 | 2.5 | --- | |
| M1/2 | 1～2 | 2.5 | 0.5 | |
| M1.5/3 | 1.5～3 | 3.8 | 1 | |
| M2/4 | 2～4 | 5 | 1 | |
| M2.5/5 | 2.5～5 | 6.3 | 1.5 | |
| M3/6 | 3～6 | 7.5 | 2 | |
| M4/8 | 4～8 | 10 | 2.5 | |
| M5/10 | 5～10 | 11 | 3 | |
| M6/12 | 6～12 | 13.2 | 3.5 | |
| M8/12 | 8～12 | 13.2 | 4 | |
| M8/16 | 8～16 | 17.6 | 4 | |
| M10/20 | 10～20 | 22 | 6 | |
| M12/22 | 12～22 | 24.2 | 7 | |
| M20/30 | 20～30 | 33 | 10 | |
| M22/36 | 22～36 | 39.6 | 12 | |
| M36/54 | 36～54 | 56.7 | 15 | |
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