GCA-06W Professional Geiger Counter Nuclear Radiation Detection Monitor with Digital Meter and External Wand Probe - NRC Certification Ready- 0.001 mR/hr Resolution -- 1000 mR/hr Range

To be honest, you don't get many choices at this price. It works, It gets the job done. I wouldn't expect more. So I say it's a great product.

I found this product to be solid and exactly as described. I am only a amateur scientist and wanted to measure various sources around the house/outdoor environment. This device was sensitive enough to detect particles being produced by my granite countertops, which exceeded my normal background radiation for my area by about double CPM. I purchased this product due to the price point, reviews and the fact it can detect alpha/beta/gamma radiation. Furthermore, I contacted the company directly several times to get various questions answered. I found they were professional, detailed and prompt with their replies. I would buy again if I needed another, but I think this one will suffice for some time. I noted it was factory calibrated with CS-137 and has a certification sticker on the back with date/technician name. For the professional it's noted in the description it can be NRC certified if needed for addition cost, but for my needs factory calibration is sufficient. I found this to be a great Geiger Counter and would highly recommend.

I have had this for several years and found it to be accurate and reliable. I also appreciate working with the company - if you need something you can email them and they'll get right back to you.

The instrument is calibrated once a year. Calibration was done 10 months prior to purchase. Also feels cheaply made. Clasps, wand and housing is made of plastic. Battery was not included, neither was a functional charger.

Works well and simply used. Thanks for your hard work to make this a useful product.