19GR – Nano Gamma

Posted by on Aug 3, 2014 in Gamma, Probes, Products | Comments Off on 19GR – Nano Gamma

19GR – Nano Gamma

19NGR Nano Gamma Probe Soil analysis and remediation

                                                                                                                              Courtesy of Geosyntec Consultants


The 19GR Nano Gamma is the slimmest downhole gamma probe in existence today. At only 19.05 mm (0.75 inches) in diameter, it can be used inside Geoprobe push tubes to collect lithological information in soils or other hard to reach zones. It is operated as a standalone pulse probe on the Matrix acquisition system.

The natural gamma probe measures the amount of gamma radiation occurring naturally within the formations crossed by a hole. Gamma rays are produced mainly by isotopes of potassium, thorium, and uranium. The gamma log is widely used in the groundwater and environmental industries to identify lithology and perform containment analyses.

19GR Dimensions gamma ray probe


  • Bed boundary analysis
  • Facies changes
  • Coarsening/ Fining Sequences
  • Identify Clay Aquitards
  • Aquifer Thickness
  • Uranium Concentration

Operating Conditions

Borehole Fluid
[X] Water
[X] Mud
[X] Dry

[X] Uncased
[X] PVC Borehole
[X] Steel

[_] Required
[X] Non-Necessary

Features & Benefits

  • Versatile, ubiquitous probe which functions with a wide range of applications and borehole conditions.
  • Fits inside small push tubes and other non-standard piping.
  • Exceptionally small diameter and easy to use.
  • Mount Sopris manufactures more natural gamma and spectral tools than any other slimline manufacturer in the world today.

19NGR Nano Gamma Probe Well Logging Field


 Specifications – Metric/English

Diameter19.05 mm0.75 in.
Length48.3 cm19.00 in.
Length with weight sub58.4 cm23.00 in.
Weight496 g1.09 lbs
Weight with weight sub743 g1.64 lbs
Max. Temp.50ºC120ºF
Max. Pressure100 bar1450 psi
Sensor CsI(Na) Crystal1.05 x 7.62 cm0.415 x 3.0 in
Nominal Op. Voltage24 VDC
Nominal Op. Current74 mA



Data Sheet: Coming Soon!

User Guide

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