GQ GMC-600 Pro
The best value alpha-capable counter, with the same pancake tube as meters costing twice as much. A strong pick for checking surfaces, glass and minerals.
Amazon $298$298
Mica window GM tube348 CPM/µSv/h4,250 µSv/h
3.1/5
A well-built pancake survey meter for contamination checks and collectors. It is good, but it is expensive for what the tube delivers.
- Mica window GM tubeDetector
- α β γ XDetects
- 350 CPM per µSv/h (Cs-137)Sensitivity
- 1,250 µSv/hMax dose rate
Check price at Amazon$699
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Pancake tube reads alpha, beta, gamma and X-rays
- A 9 V battery lasts for years
- Logs readings for later download
Cons
- Costs more than twice the GQ GMC-600 Pro with the same tube
- Range tops out at 1,250 µSv/h
- GM tube is covered for only 120 days
The Mazur PRM family
Every Mazur PRM model we rank, smallest first. Ratings compare each against its own detector type.
| Model | Detector | Rating | Price |
|---|---|---|---|
| Mazur PRM-7000 | GM tube | 2.5/5 | $449 |
| Mazur PRM-9000 (this one) | Mica window GM tube | 3.1/5 | $699 |
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its detector type. How we rank explains each one.
Specifications
| Model number | PRM-9000 |
|---|---|
| Detection | |
| Detector | Mica window GM tube |
| Tube or crystal | LND 7317 pancake |
| Radiation types | α β γ X |
| Sensitivity | 350 CPM per µSv/h (Cs-137) |
| Max dose rate | 1,250 µSv/h |
| Energy range | from 10 keV |
| Gamma spectrum | No |
| Features | |
| Data logging | Yes |
| Connection | None |
| Battery | 9 V |
| Battery life | 42,850 h |
| Build | |
| Weight | 368 g |
| Warranty | 1 year |
Alternatives in this detector type
Radiation Alert Monitor 200
A compact professional survey meter that reads all four radiation types. Hobbyists get more sensitivity for less with a pancake-tube counter.
Amazon $799.95$799.95
Mica window GM tube107 CPM/µSv/h2,000 µSv/h
Medcom Inspector Alert V2
A trusted professional pancake meter for contamination surveys. It is worth it if you need the name; the GQ GMC-600 Pro does most of the same for far less.
Amazon $960.40$960.40
Mica window GM tube350 CPM/µSv/h1,100 µSv/h
Compare
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