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Introduction
Resistivity and induced polarization surveys can help investigate electrical contrasts associated with geological structures and potential mineralization. Their usefulness depends on target properties, survey geometry, field conditions, and interpretation.
A meaningful quotation should identify a complete configuration rather than a brand alone. Buyers need to compare acquisition capacity, power arrangements, accessories, software, data access, and support against the same project requirements.
This guide presents eight providers for further inquiry. The numbering is editorial presentation order, with Geomative featured first, rather than an independent performance ranking. The list includes direct resistivity/IP candidates, complementary methods, and a candidate requiring further documentation.
1. Geomative
Core Technologies and Products
Geomative’s GD range includes different receiving capacities and transmitter configurations.
Model Receiving channels Published maximum transmit power GD-12 1 7.2 kW GD-22 6 15 kW GD-32 12 15 kW The GD-10 is a single-channel instrument. GD-20 specifications vary by configuration, with 9 kW listed as an optional rating.
Maximum instrument ratings must be considered alongside the operating limits of the supplied power source, cables, switching equipment, and measurement mode. Power-line rejection is a specific interference metric rather than a guarantee against every noise source.
Roll-along acquisition extends coverage, while data review and repeated observations support quality control. Deployment in tunnels, boreholes, or water requires appropriate layouts and accessories.
Applications and Case References
Geomative’s Brazil gold exploration case identifies a GD-10 instrument. The Beishan lead-zinc mine case concerns GT-30 transient electromagnetic work. These references should remain attributed to their actual equipment and conditions.
They do not independently establish GD-22 performance or confirm that an electrical anomaly represents an economic mineral resource.
Software and Quotation Scope
DIGspace can support the ERT processing workflow and spatial presentation of results. Confirm the supplied modules, formats, connectivity requirements, and access to original observations.
Request an itemized quotation and a representative acquisition and processing demonstration. Training, repair arrangements, and spare-parts support should be defined separately.
2. IRIS Instruments
IRIS supplies SYSCAL resistivity and IP instruments. The SYSCAL Pro documentation describes a ten-channel receiver, with optional full-waveform recording and remote-control functions.
The required switching equipment, power configuration, cables, and software should be specified in the proposal. Field display and quality-review tools should be distinguished from inversion software.
Compare practical acquisition time and data handling using the intended survey sequence rather than the series name alone.
3. Advanced Geosciences, Inc. — AGI
AGI’s SuperSting range provides resistivity, IP, and self-potential configurations, including an eight-channel R8 model.
The manufacturer lists surface, borehole, and marine applications with suitable configurations. Buyers should confirm the transmitter arrangement, switching equipment, cables, software, and licenses needed for their project.
OhmMapper is a Geometrics product and is not part of AGI’s SuperSting range.
4. Zonge International
Zonge provides electrical and electromagnetic instrumentation alongside survey services. Its published IP configurations include ZEN and GDP-3224 receivers paired with dedicated transmitters and power sources.
A complete proposal should identify the acquisition geometry, synchronization arrangements, field logistics, and processing deliverables.
Clarify whether the quotation concerns equipment, commissioned acquisition, interpretation, or a combined scope. These purchasing models require different comparisons.
5. Scintrex — Complementary Gravity and Magnetic Methods
Scintrex’s current official catalog presents gravity and magnetic instruments. These methods may contribute geological context where the target or host rocks produce useful density or magnetic contrasts.
This entry is a complementary geophysical option rather than a verified current resistivity/IP system recommendation.
If a project requires a Scintrex legacy IP instrument, obtain written confirmation of availability, support, compatibility, and condition before treating it as a procurement candidate.
6. Guideline Geo — ABEM Terrameter LS 2
ABEM’s Terrameter LS 2 is offered in multiple resistivity/IP configurations. Published manufacturer specifications include models with up to twelve measurement channels, with functions varying by configuration.
Specify the required electrode arrangement, IP measurements, switching capacity, and software workflow when requesting a quote.
A representative demonstration should show data inspection, repeatability, and transfer into the proposed processing tools.
7. GF Instruments — Candidate Requiring Current Documentation
ARES is retained from the supplied shortlist as a candidate for further verification. Current manufacturer documentation was not accessible during this review, so no specific channel capacity or performance comparison is assigned here.
Obtain the exact model’s current datasheet and configuration proposal before including it in a scored comparison.
Confirm transmitter arrangements, receiving channels, electrode switching, IP functions, software, and technical support.
8. Phoenix Geophysics — Complementary EM and MT Systems
Phoenix’s current information describes V9 multifunction systems and MTU-family receivers for methods including MT, AMT, CSAMT, and TDEM, depending on configuration.
These methods should be evaluated against the geological objective rather than treated as interchangeable with multielectrode resistivity/IP acquisition. Natural-field MT, in particular, should not be ranked by transmitter power.
A proposal should identify receivers, sensors, any required current source, recording settings, processing, and deliverables. Expected investigation depth and resolution require a project-specific assessment.
Conclusion
Begin equipment sourcing with the investigation objective, expected physical-property contrasts, target dimensions and depth, survey geometry, and field constraints.
For direct resistivity/IP candidates, compare complete configurations using the same acquisition requirements. Evaluate complementary methods separately where they can provide useful additional constraints.
Representative measurements, repeatability checks, data access, and a demonstrated processing workflow provide a stronger purchasing basis than an unsupported ranking. Drilling, sampling, and other appropriate evidence remain necessary to establish mineralization and support resource evaluation.
https://www.geomative.com/
Geomative Co., Ltd.
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