Groundwater sampling is an essential part of environmental monitoring, hydrogeological investigation and groundwater quality assessment. However, when sampling needs to be performed repeatedly, at a defined depth or under controlled low-flow conditions, conventional manual sampling can become time-consuming and difficult to standardize.
The AML919 Groundwater Automatic Sampler is designed to provide a more controlled approach to groundwater sample collection. It integrates automatic sampling control, automatic sampling-depth adjustment and low-flow groundwater sampling into one system.
The system is designed for environmental professionals who need reliable groundwater samples while reducing repetitive manual operations during field monitoring.
What Is the AML919 Groundwater Automatic Sampler?
The AML919 is an automatic groundwater sampling system developed for groundwater monitoring and environmental sampling applications.
Unlike a conventional manual groundwater sampler, AML919 is designed to automate important parts of the sampling process.
Its main functions include:
- Automatic groundwater sampling
- Low-flow groundwater sampling
- Automatic sampling-depth adjustment
- Periodic groundwater sampling
- Fixed-depth groundwater sampling
- Repeated groundwater monitoring
The system is particularly useful when the same monitoring well needs to be sampled repeatedly or when the sampling position needs to remain consistent despite changes in groundwater level.
Why Automatic Groundwater Sampling Is Important
Traditional groundwater sampling usually requires field technicians to travel to the monitoring well, install the equipment, adjust the sampling position, perform the required sampling operation and collect the samples manually.
This approach can work well for small projects.
However, the workload increases significantly when a monitoring program involves:
- Multiple monitoring wells
- Repeated sampling
- Long-term groundwater monitoring
- Different sampling depths
- Periodic sampling schedules
- Remote monitoring locations
In these situations, automation can reduce repetitive field operations and improve consistency between sampling events.
The purpose of AML919 is therefore not simply to replace a manual sampler. It is designed to make repeated groundwater sampling more controlled and easier to manage.
Three Common Challenges in Groundwater Sampling
1. Repeated Manual Sampling Requires Significant Field Work
Long-term groundwater monitoring may require the same monitoring wells to be sampled repeatedly.
Every sampling event can involve:
- Traveling to the monitoring site
- Preparing sampling equipment
- Checking the groundwater level
- Positioning the sampler
- Collecting the groundwater sample
- Handling and transporting the sample
When the number of wells increases, these repeated operations can consume considerable time and labor.
AML919 uses automatic sampling control to reduce the amount of manual intervention required during the sampling process.
2. Groundwater Levels Can Change
Groundwater levels are not always constant.
They can change because of:
- Seasonal variations
- Rainfall
- Groundwater recharge
- Pumping activities
- Industrial water consumption
- Natural hydrogeological changes
If the groundwater level changes but the sampling position remains unchanged, the actual sampling conditions may differ between monitoring events.
AML919 addresses this problem through its automatic sampling-depth adjustment function.
The system can adjust the sampling position according to groundwater-level changes, helping maintain the required sampling depth during different monitoring periods.
3. Manual Operation Can Affect Sampling Consistency
Groundwater sampling involves several variables that may change from one sampling event to another.
For example:
- Sampling position
- Pumping conditions
- Sampling time
- Operator technique
- Sampling frequency
When sampling is performed manually over a long period, these variables can introduce differences between individual sampling events.
Automatic control helps reduce some of these variations and provides a more repeatable sampling workflow.
AML919 Automatic Groundwater Sampling Solution
AML919 combines three core functions:
Automatic Sampling Control
The system can perform groundwater sampling according to preset operating requirements, reducing the need for continuous manual operation.
Low-Flow Sampling
AML919 supports low-flow groundwater sampling, helping reduce unnecessary disturbance to the groundwater during sample collection.
Automatic Depth Adjustment
The sampling position can be adjusted according to groundwater-level changes, helping maintain a consistent sampling depth.
Together, these functions provide a controlled approach to groundwater sample collection.
How AML919 Works
The basic working process can be understood as:
Monitoring Well
↓
Groundwater-Level Monitoring
↓
Automatic Sampling-Depth Adjustment
↓
Controlled Low-Flow Sampling
↓
Automatic Sample Collection
↓
Sample Preservation and Laboratory Analysis
This workflow is particularly suitable for groundwater monitoring projects where sampling conditions need to remain as consistent as possible.
Automatic Groundwater Sampling
The automatic sampling function is one of the main differences between AML919 and conventional manual sampling equipment.
Once the system has been configured according to the project requirements, automatic control can reduce the need for technicians to repeatedly adjust the sampling equipment during field operations.
This is particularly useful for:
- Periodic monitoring
- Long-term monitoring
- Multiple monitoring wells
- Repeated groundwater sampling
- Projects requiring consistent sampling procedures
For large groundwater monitoring programs, reducing repetitive manual operations can significantly simplify field management.
Low-Flow Groundwater Sampling
AML919 supports low-flow groundwater sampling.
Low-flow sampling is intended to collect groundwater while minimizing unnecessary disturbance to the monitoring well.
Excessive pumping or disturbance can affect groundwater conditions and may increase turbidity or cause unnecessary mixing within the well.
A controlled low-flow approach can therefore be useful when the objective is to obtain a representative groundwater sample while maintaining relatively stable sampling conditions.
The appropriate pumping rate and sampling procedure should be determined according to the monitoring-well conditions and applicable environmental sampling requirements.
Automatic Sampling-Depth Adjustment
One of the key features of AML919 is its automatic sampling-depth adjustment capability.
The groundwater level in a monitoring well can change over time.
If the project requires sampling from a specific groundwater position, simply installing the sampler at one fixed physical position may not always provide the same relative sampling condition.
AML919 can adjust the sampling depth according to groundwater-level changes.
This makes it suitable for projects requiring:
- Fixed-depth groundwater sampling
- Repeated sampling from the same groundwater position
- Long-term monitoring
- Periodic groundwater quality assessment
Fixed-Depth Groundwater Sampling
Fixed-depth sampling can be important when monitoring groundwater over an extended period.
For example, an environmental monitoring project may require samples to be collected from approximately the same groundwater layer every month.
If the groundwater level changes, the sampling equipment may need to be repositioned.
AML919’s automatic depth adjustment function is designed to address this requirement.
Instead of relying entirely on manual adjustment, the system can automatically respond to groundwater-level changes and maintain the required sampling position.
AML919 for Long-Term Groundwater Monitoring
AML919 is particularly suitable for long-term groundwater monitoring programs.
Long-term monitoring often involves repeated sampling from the same wells over months or years.
The objective is not only to collect samples, but also to make the sampling process as consistent as practical.
AML919 can help standardize:
- Sampling depth
- Sampling method
- Sampling operation
- Sampling frequency
- Field operation
This makes the system suitable for environmental monitoring programs where repeated groundwater sampling is required.
AML919 for VOC Groundwater Sampling
AML919 can also be used in groundwater sampling applications involving volatile organic compounds (VOCs).
VOC sampling requires careful control because unnecessary disturbance and exposure to air can affect sample integrity.
Low-flow sampling can help reduce unnecessary disturbance during groundwater collection.
However, obtaining reliable VOC samples requires a complete sampling procedure.
In addition to the equipment, operators should pay attention to:
- Purging procedures
- Flow rate
- Sample transfer
- Sample containers
- Headspace
- Preservation
- Transportation
- Laboratory requirements
AML919 should therefore be used together with the appropriate VOC sampling and preservation procedures.
Applications of AML919
The AML919 Groundwater Automatic Sampler can be used in a range of groundwater monitoring applications.
Environmental Groundwater Monitoring
For routine groundwater quality and environmental monitoring programs.
Hydrogeological Investigation
For groundwater investigation projects requiring controlled sampling at defined depths.
Groundwater Quality Assessment
For collecting groundwater samples for laboratory testing.
Long-Term Groundwater Observation
For repeated sampling from the same monitoring wells over an extended period.
Groundwater Pollution Investigation
For groundwater sample collection during environmental contamination investigations.
VOC Groundwater Sampling
For applications requiring controlled low-flow groundwater sample collection.
Multi-Well Monitoring
For projects involving repeated sampling across multiple monitoring wells.
What Parameters Can AML919 Monitor?
It is important to distinguish between groundwater sampling and groundwater quality measurement.
AML919 is primarily designed for groundwater sample collection.
It can work together with groundwater multiparameter monitoring instruments when field water-quality measurements are required.
Depending on the selected monitoring instrument, groundwater parameters may include:
- Temperature
- pH
- Electrical conductivity
- Dissolved oxygen
- Turbidity
- ORP
The functions can therefore be divided into three stages:
AML919
Groundwater sample collection
↓
Multiparameter Water Quality Instrument
Field groundwater parameter measurement
↓
Laboratory Analysis
Target contaminant analysis
This combination can provide a more complete groundwater monitoring workflow.
AML919 Groundwater Automatic Sampler vs. Manual Sampling
| Requirement | Manual Groundwater Sampling | AML919 |
|---|---|---|
| Automatic sampling | Limited | Supported |
| Low-flow sampling | Depends on equipment | Supported |
| Sampling-depth adjustment | Manual | Automatic |
| Fixed-depth monitoring | Operator dependent | Supported |
| Repeated sampling | Requires repeated field operation | Designed for repeated sampling |
| Long-term monitoring | Higher manual workload | Reduced manual intervention |
| Sampling consistency | Depends on operator | Improved through automatic control |
The actual sampling performance depends on well construction, groundwater conditions, sampling depth and the selected operating procedure.
Who Should Consider AML919?
AML919 can be particularly useful for organizations that conduct repeated groundwater sampling.
Potential users include:
- Environmental monitoring companies
- Environmental consulting companies
- Geological survey organizations
- Research institutions
- Water resource management organizations
- Environmental laboratories
- Engineering companies
- Groundwater investigation teams
It is especially relevant when a project requires multiple monitoring events, fixed-depth sampling or reduced manual field operations.
Information Required for AML919 Configuration
Groundwater monitoring wells vary considerably in depth, diameter and groundwater conditions.
Before selecting or configuring AML919, users should provide:
- Monitoring well depth
- Well diameter
- Static groundwater level
- Required sampling depth
- Groundwater-level variation
- Sampling frequency
- Required sample volume
- Target contaminants
- Required sampling method
- Number of monitoring wells
This information allows the appropriate AML919 configuration and sampling method to be evaluated according to the actual project.
AML919 Product Advantages
The main advantages of AML919 come from the combination of automatic control and groundwater sampling functions.
Automatic Operation
Reduces repetitive manual intervention during groundwater sampling.
Low-Flow Sampling
Provides a controlled approach to groundwater sample collection and helps minimize unnecessary disturbance.
Automatic Depth Adjustment
Adjusts the sampling position according to groundwater-level changes.
Fixed-Depth Sampling
Helps maintain the required sampling position during repeated monitoring.
Long-Term Monitoring
Suitable for groundwater monitoring programs involving repeated sampling.
Flexible Applications
Can be used for environmental monitoring, hydrogeological investigation, groundwater quality assessment and VOC sampling.
AML919 Groundwater Automatic Sampler: Key Takeaway
The main value of the AML919 is not simply that it can collect groundwater automatically.
Its purpose is to address several practical problems associated with repeated groundwater monitoring:
Manual Sampling
→ Repeated field operation
→ Difficult to maintain consistent conditions
→ Higher operator workload
↓
AML919 Automatic Sampling
→ Automatic sampling control
→ Low-flow sampling
→ Automatic depth adjustment
→ More consistent sampling conditions
→ Reduced repetitive manual operation
For groundwater monitoring programs where sampling needs to be repeated at defined depths and under controlled conditions, AML919 provides a more systematic alternative to conventional manual sampling.
Professional Groundwater Monitoring Equipment Manufacturer
AIMOLI Environmental Instruments focuses on the development and manufacturing of groundwater monitoring and environmental testing equipment.
The product range includes:
- Groundwater automatic samplers
- Groundwater sampling systems
- Low-flow bladder pumps
- Groundwater flow velocity and direction instruments
- Groundwater multiparameter analyzers
- Downhole inspection equipment
AIMOLI provides equipment for groundwater sampling, groundwater quality monitoring, hydrogeological investigation and environmental testing applications.
Frequently Asked Questions About AML919
What is a groundwater automatic sampler?
A groundwater automatic sampler is equipment designed to collect groundwater samples automatically according to defined sampling conditions or schedules. It can reduce manual field operations and improve the consistency of repeated groundwater monitoring.
What sampling method does AML919 use?
AML919 supports low-flow groundwater sampling methods designed to reduce unnecessary disturbance during sample collection.
Can AML919 perform fixed-depth groundwater sampling?
Yes. AML919 supports automatic sampling-depth adjustment, allowing the sampling position to be maintained according to groundwater-level changes and project requirements.
Can AML919 be used for VOC groundwater sampling?
Yes. AML919 can be used for VOC groundwater sampling applications where controlled low-flow sample collection is required. The complete sampling, preservation and transportation procedure should follow the applicable VOC sampling requirements.
Does AML919 measure groundwater quality parameters?
AML919 is primarily a groundwater sampling system. For groundwater quality measurement, it can work together with multiparameter water-quality instruments that measure parameters such as temperature, pH, conductivity, dissolved oxygen, turbidity and ORP.
What types of projects can use AML919?
AML919 can be used for environmental groundwater monitoring, hydrogeological investigation, groundwater quality assessment, long-term groundwater observation, groundwater pollution investigation and repeated field sampling programs.
