Convert Disintegrations per minute to Curies
Convert Disintegrations per minute (dpm) to Curies (Ci) instantly and accurately.
Conversion Formula
Ci = dpm × 4.504504505e-13
About Disintegrations per minute
The disintegration per minute (dpm) equals exactly 1/60 Bq ≈ 16.7 mBq. Standard output unit of liquid scintillation counters (LSC) in biochemical and biomedical research for ³H and ¹⁴C tracer assays; radioimmunoassay protocols report results in dpm/well. 1 dpm = 1/60 Bq = 60 dph.
About Curies
The curie (Ci) equals exactly 3.7 × 10¹⁰ Bq = 37 GBq, originally defined as the activity of 1 g of ²²⁶Ra. Still widely used in the US: ⁶⁰Co teletherapy sources are 5000-15000 Ci; ¹³⁷Cs blood irradiators are 1000-40000 Ci; NRC source licences for industrial radiography cite Ci limits. 1 Ci = 3.7 × 10¹⁰ Bq.
Quick Reference Table
| Disintegrations per minute (dpm) | Curies (Ci) |
|---|---|
| 1 dpm | 4.505 × 10-13 Ci |
| 2 dpm | 9.009 × 10-13 Ci |
| 5 dpm | 2.252 × 10-12 Ci |
| 10 dpm | 4.505 × 10-12 Ci |
| 25 dpm | 1.126 × 10-11 Ci |
| 50 dpm | 2.252 × 10-11 Ci |
| 100 dpm | 4.505 × 10-11 Ci |