Groundwater Sampling Equipment

AIMOLI provides groundwater sampling equipment for environmental monitoring, monitoring-well sampling, groundwater investigation, contaminated-site assessment, well purging and groundwater quality testing.

Our groundwater sampling equipment range includes groundwater sampling pumps, low-flow sampling equipment, bladder pumps, well purging equipment and groundwater monitoring instruments.

For projects involving deep monitoring wells, low-flow sampling, VOC analysis or repeated groundwater monitoring, equipment selection can directly affect sampling efficiency, field operation and sample quality.

AIMOLI develops groundwater sampling equipment for environmental contractors, monitoring companies, laboratories, research organizations and other professional groundwater users.

Need help selecting groundwater sampling equipment? Contact AIMOLI with your well depth, well diameter, water level and sampling requirements.

Groundwater Sampling Equipment for Professional Environmental Monitoring

Groundwater sampling is more than simply pumping water from a monitoring well.

A complete groundwater sampling process may involve:

Measuring the groundwater level
Well purging or well development
Monitoring groundwater parameters
Controlling pumping flow
Collecting representative samples
Sampling for VOCs or other contaminants
Preventing cross-contamination
Recording field data
Preparing samples for laboratory analysis

The groundwater sampling equipment should therefore match the complete sampling procedure rather than being selected only according to pump price or maximum pumping depth.

AIMOLI provides equipment for different stages of the groundwater monitoring workflow, including sampling pumps, bladder pumps, well-purging equipment and groundwater measurement instruments.

Groundwater Sampling Equipment Types

Different groundwater monitoring projects require different equipment.

The main categories include:

Groundwater sampling pumps
Low-flow groundwater sampling equipment
Groundwater bladder pumps
Groundwater well purging equipment
Groundwater VOC sampling equipment
Groundwater monitoring instruments
Integrated groundwater sampling systems

The appropriate equipment depends on the monitoring-well construction, well depth, groundwater level, required flow rate, sampling method and target contaminants.

Groundwater Sampling Pumps

A groundwater sampling pump is used to transfer groundwater from a monitoring well to the sampling point while maintaining the required sampling conditions.

For routine monitoring, a pump may need to support both controlled sampling and well purging.

AML918 Groundwater Sampling Pump

The AML918 Groundwater Sampling Pump is designed for groundwater well sampling and well washing.

AIMOLI currently publishes a flow range of approximately 0.1–12 L/min and a standard lift of 70 meters. The manufacturer also reports field use in a 300-meter groundwater well application.

The AML918 is designed to provide both lower-flow sampling and higher-flow well washing capability.

AML918 applications

Groundwater well sampling
Monitoring-well purging
Well washing
Low-flow groundwater sampling
Routine groundwater monitoring
Environmental investigation
Deep-well applications according to project configuration

AML918 advantages

Wide operating flow range
Adjustable water output
Sampling and well-purging functions
Standard 70 m lift
Meter-marked cable for depth positioning
Portable field operation
Suitable for different groundwater monitoring workflows

Low-Flow Groundwater Sampling Equipment

Low-flow groundwater sampling is used when the sampling procedure requires controlled groundwater movement and reduced disturbance to the monitoring well.

Low-flow sampling should not be understood simply as “pumping water slowly.”

The overall procedure may need to control:

Flow rate
Drawdown
Water-level stability
Groundwater parameters
Sampling duration
Sample handling
Contamination control

The equipment should therefore be selected together with the project’s sampling method and monitoring requirements.

For projects where low-flow sampling and VOC collection are important considerations, a bladder-pump system can provide a different sampling approach from a conventional submersible pump.

Groundwater Bladder Pump

A groundwater bladder pump uses a flexible bladder and pressure-driven pumping principle to transfer groundwater through the sampling tubing.

Bladder pumps are commonly considered for controlled groundwater sampling, low-flow applications and projects where sample disturbance needs to be carefully managed.

AML919 Groundwater Bladder Pump

The AML919 Groundwater Sampler is positioned by AIMOLI for groundwater well purging, groundwater sampling and VOC collection. AIMOLI currently describes it as a low-flow bladder pump and publishes a standard sampling depth of 70 meters.

The AML919 is designed for projects where controlled groundwater sampling is a priority.

AML919 applications

Low-flow groundwater sampling
Groundwater VOC sampling
Monitoring-well sampling
Groundwater well purging
Contaminated-site investigation
Environmental monitoring
Deep-well sampling according to configuration

AML919 design features

Bladder-pump sampling principle
Low-flow sampling capability
316 stainless-steel pump body
PTFE sampling tubing
Closed sampling configuration
Standard 70 m sampling depth
Customized configurations for specific applications

AIMOLI’s current product information specifically positions the AML919 for VOC collection and groundwater sampling.

Groundwater VOC Sampling Equipment

Groundwater VOC sampling requires additional attention to sample disturbance, air exposure, contamination control and sample handling.

Volatile organic compounds can be affected by inappropriate sampling procedures. Therefore, the sampling equipment should be considered together with the project’s sampling protocol and laboratory requirements.

For VOC projects, equipment selection should consider:

Pumping method
Flow control
Sample exposure to air
Tubing material
Pump-body material
Sampling depth
Decontamination procedures
Sample preservation
Laboratory requirements

The AML919 is specifically positioned by AIMOLI for groundwater VOC collection and low-flow sampling.

AIMOLI also publishes a recent application article describing the AML919 with a 316 stainless-steel pump body and PTFE sampling tubing for complex groundwater conditions. Any project-specific performance figures should be verified against the latest technical documentation before being used as a guaranteed specification.

Groundwater Well Purging Equipment

Groundwater well purging is often performed before final sample collection.

The purpose of purging depends on the project’s monitoring plan and applicable sampling procedure.

Groundwater well-purging equipment may need to provide:

Sufficient pumping capacity
Stable operation
Appropriate lift
Compatibility with the monitoring well
Efficient field deployment
Controlled operation

The AML918 is designed to combine groundwater sampling with well washing/purging functions, making it suitable for projects where one pump needs to perform different field operations.

Groundwater Monitoring Equipment

Groundwater sampling should normally be considered as part of a larger groundwater monitoring workflow.

Before final sampling, field teams may need to determine whether groundwater conditions have stabilized.

AML916 Groundwater Six-Parameter Measuring Instrument

The AML916 is designed for groundwater field data acquisition and assessment before sampling.

According to AIMOLI’s current product information, AML916 measures:

Temperature
pH
Dissolved oxygen
ORP
Electrical conductivity
Turbidity

It is also designed to support field data recording and stability assessment during groundwater monitoring and sampling preparation.

This means the groundwater monitoring process can be structured as:

Measurement → Well Purging → Stability Assessment → Sampling

rather than treating groundwater sampling as an isolated pumping operation.

Integrated Groundwater Sampling System

For environmental projects involving multiple monitoring wells, a complete groundwater sampling system may include several types of equipment.

A typical workflow may include:

Step 1 — Measure

Determine groundwater level and field water-quality parameters.

Step 2 — Purge

Remove stagnant water or perform the required well-purging procedure.

Step 3 — Monitor

Monitor groundwater parameters and determine whether the sampling conditions meet the project’s requirements.

Step 4 — Sample

Use the appropriate groundwater sampling pump or bladder pump to collect the groundwater sample.

Step 5 — Record

Record sampling depth, time, flow conditions, groundwater parameters and other required field information.

AIMOLI’s current product range includes equipment that can support different stages of this workflow, including groundwater sampling pumps, bladder pumps and groundwater monitoring instruments.

Groundwater Sampling Equipment Comparison

The following table provides a general equipment-selection framework.

Equipment	Main Application	Low-Flow Sampling	VOC Sampling	Well Purging	Deep-Well Use
Groundwater Sampling Pump	Routine groundwater sampling	Depending on model	Application dependent	Yes, depending on model	Model dependent
Bladder Pump	Controlled groundwater sampling	Yes	Suitable for applicable VOC procedures	Yes, depending on system	Configuration dependent
Well-Purging Pump	Well purging and well washing	Not the primary purpose	Not the primary purpose	Yes	Model dependent
Groundwater Monitoring Instrument	Field parameter measurement	N/A	Supports sampling preparation	Yes	Yes
Integrated Sampling System	Complete monitoring workflow	Configuration dependent	Configuration dependent	Yes	Configuration dependent

The correct equipment should be selected according to actual well conditions and the applicable project sampling procedure.

How to Choose Groundwater Sampling Equipment

Selecting groundwater sampling equipment only by price or maximum depth can result in an unsuitable field configuration.

Before purchasing equipment, evaluate the following factors.

1. Monitoring-Well Depth

Provide both the total well depth and the actual static water level.

These two numbers are not necessarily the same.

The pump must be able to operate at the required sampling depth under actual field conditions.

AIMOLI currently publishes a standard 70 m lift for AML918 and a standard 70 m sampling depth for AML919. Deeper applications should be technically confirmed according to the specific configuration.

2. Well Diameter

The pump and sampling assembly must fit inside the monitoring well.

Provide:

Well diameter
Casing diameter
Screen interval
Total depth
Sampling depth

before selecting the equipment.

3. Static Water Level

Static water level affects the actual pumping lift.

Do not select a pump based only on total well depth.

4. Required Flow Rate

Different procedures require different flow conditions.

High-flow operation may be required for well purging or well washing, while controlled lower-flow operation may be used during sampling.

5. Target Contaminants

The target contaminant affects sampling requirements.

For VOC projects, the sampling method should consider volatilization, air exposure and sample handling.

For other contaminants, different materials and sampling configurations may be appropriate.

6. Sampling Method

Confirm whether your project requires:

Low-flow sampling
Bladder-pump sampling
Conventional pump sampling
Well purging
Well development
Grab sampling

7. Equipment Materials

For difficult groundwater conditions, pump-body and tubing materials should be evaluated for chemical compatibility and corrosion resistance.

The AML919, for example, uses a 316 stainless-steel pump body and PTFE sampling tubing according to AIMOLI’s current published information.

8. Decontamination and Cross-Contamination Control

Equipment selection should be accompanied by a suitable decontamination procedure.

Sampling teams should consider:

Pump body
Tubing
Connectors
Sampling containers
Disposable components
Cleaning procedures
Sampling sequence

AIMOLI has published specific guidance on preventing cross-contamination during groundwater sampling.

Groundwater Sampling Equipment Applications

AIMOLI groundwater sampling equipment can be considered for a range of professional groundwater applications.

Environmental Site Investigation

Groundwater sampling equipment is used to collect groundwater samples during environmental investigations.

Contaminated-Site Assessment

Sampling pumps and bladder pumps can be used as part of groundwater monitoring programs at contaminated sites.

Industrial Site Monitoring

Industrial facilities may require regular monitoring of groundwater around production, storage or waste-management areas.

Landfill Monitoring

Groundwater monitoring wells around landfill sites may require repeated sampling over long periods.

Environmental Remediation

Groundwater sampling can be used to monitor contaminant concentrations during remediation projects.

Groundwater Quality Monitoring

Sampling equipment can be combined with field water-quality instruments to support groundwater quality assessment.

Deep Monitoring Wells

Deep wells require particular attention to pump lift, tubing configuration, installation depth and field operating conditions.

Groundwater Sampling Equipment Case Studies

Deep Groundwater Well Sampling

AIMOLI has published a case involving a groundwater well deeper than 300 meters at the Fourth Academy of Nuclear Science and Technology.

According to the company’s published case description, the application involved technical evaluation of groundwater sampling equipment for a deep well where conventional manual sampling was not considered suitable.

This case demonstrates why total well depth alone is not sufficient when selecting sampling equipment.

The actual water level, sampling depth, required flow and pump configuration must also be considered.

Groundwater Monitoring Equipment Training Application

AIMOLI has also published information about groundwater monitoring equipment used in training associated with the Inner Mongolia Environmental Monitoring Center.

The equipment listed in the application includes AML918D, AML918, AML919 and AML916, covering groundwater well development, groundwater sampling, bladder-pump sampling and field groundwater measurement.

This type of multi-equipment workflow demonstrates how groundwater sampling can be integrated with measurement and well-purging procedures.

Groundwater Sampling Equipment Manufacturer

AIMOLI (Hebei) Technology Co., Ltd. develops and manufactures ecological and environmental monitoring instruments.

AIMOLI’s website identifies groundwater sampling and groundwater monitoring as core product areas and currently lists products including AML918 groundwater sampling pump, AML919 groundwater sampler, AML916 groundwater six-parameter measuring instrument and AML917 constant-depth water sampler.

The company also publishes information about environmental monitoring applications, product development and technical qualifications.

For customers purchasing groundwater sampling equipment directly from a manufacturer, the most useful information to provide is the actual project condition rather than only the keyword or product name.

Why Work With AIMOLI?

Groundwater-Focused Product Range

AIMOLI’s product range includes equipment for groundwater sampling, well monitoring, well purging and groundwater field measurement.

Multiple Sampling Methods

The product range includes both groundwater sampling pumps and bladder-pump sampling equipment, allowing customers to evaluate different sampling approaches.

Equipment Configuration

For deep wells or non-standard applications, the actual well conditions can be discussed with the manufacturer before equipment selection.

Field Application Experience

AIMOLI publishes groundwater sampling applications involving deep wells, environmental monitoring and groundwater sampling training.

Complete Groundwater Monitoring Workflow

AIMOLI equipment can be combined across measurement, well purging, stability assessment and groundwater sampling.

Groundwater Sampling Equipment FAQ

What is groundwater sampling equipment?

Groundwater sampling equipment is a group of pumps, samplers, tubing, controllers and related instruments used to collect groundwater samples from monitoring wells or other groundwater locations.

What equipment is used for groundwater sampling?

Common equipment includes groundwater sampling pumps, bladder pumps, low-flow sampling systems, bailers, tubing, controllers and field water-quality instruments.

The correct combination depends on the sampling procedure and well conditions.

What is a groundwater sampling pump?

A groundwater sampling pump is used to move groundwater from a monitoring well to the sampling point under controlled operating conditions.

Different pumps provide different flow ranges, lift capabilities and sampling methods.

What is a groundwater bladder pump?

A groundwater bladder pump uses a flexible bladder and pressure-driven pumping principle to move groundwater through sampling tubing.

It is commonly considered for controlled and low-flow groundwater sampling.

What is low-flow groundwater sampling?

Low-flow groundwater sampling is a controlled sampling approach intended to reduce unnecessary disturbance to the monitoring well and support representative sample collection.

The exact operating procedure should follow the applicable project method or regulatory requirements.

What equipment is suitable for groundwater VOC sampling?

Equipment selection for VOC sampling should consider sampling method, flow control, sample exposure to air, tubing materials, well depth and sample-handling requirements.

AIMOLI positions the AML919 groundwater sampler for VOC collection and low-flow groundwater sampling.

Can groundwater sampling equipment be used in deep wells?

Yes, but the equipment must be selected according to actual water level, required sampling depth, well construction and pump lift.

AIMOLI currently publishes a standard 70 m lift for AML918 and a standard 70 m sampling depth for AML919, while deeper applications require configuration confirmation.

How do I select groundwater sampling equipment?

Provide the supplier with:

Well diameter
Total well depth
Static water level
Required sampling depth
Required flow rate
Sampling method
Target contaminants
Number of monitoring wells
Well-purging requirements
Project location

The supplier can then evaluate the appropriate pump, sampler and system configuration.

What is the difference between a groundwater sampling pump and a bladder pump?

A groundwater sampling pump and bladder pump use different pumping principles and may be suited to different sampling requirements.

A conventional groundwater sampling pump may provide wider flow capability and can be useful when both well purging and sampling are required.

A bladder pump is commonly considered when controlled low-flow sampling is the primary requirement.

Request Groundwater Sampling Equipment

Choosing groundwater sampling equipment without knowing the well conditions can result in an unsuitable configuration.

Send AIMOLI the following information:

Well information

Well diameter
Total well depth
Static water level
Required sampling depth

Sampling requirements

Sampling method
Required flow rate
Target contaminants
VOC sampling requirement
Well-purging requirement

Project information

Number of monitoring wells
Project location
Existing equipment
Required delivery schedule

AIMOLI can then evaluate the project conditions and recommend an appropriate groundwater sampling pump, bladder pump or integrated groundwater sampling system.

Groundwater Sampling Equipment — AIMOLI

AIMOLI (Hebei) Technology Co., Ltd.

Groundwater Sampling Equipment | Groundwater Sampling Pumps | Bladder Pumps | Low-Flow Sampling Systems | Groundwater Monitoring Equipment

Contact AIMOLI for technical consultation and equipment selection.

Groundwater Sampling Equipment | Pumps, Samplers & Systems