APERA INSTRUMENTS / IndSen 2071M-NH-TS / AI4517
Selective for ammonium.
Built around the sample you measure.
The Apera IndSen 2071M-NH-TS combines an ammonium-selective measuring element, reference system and temperature function for ammonium-ion analysis in water-quality, nutrient and laboratory methods. Choose this replacement electrode when your compatible meter needs a dedicated NH₄⁺ sensor.
The ammonium electrode is specified for 0.18–9000 mg/L, sample pH 2–8.5 and 5–50°C. Use the stated sample limits and the correct ion method to select the sensor, then match it to the host meter.
Apera IndSen 2071M combination-electrode family photograph; ion-selective membrane and cable configuration vary by model. Tap or click the image for a larger view. Choose your IndSen ion electrodeClick or tap to compare your optionsCompare below — click or tap here to close
Know what you are ordering.
One IndSen 2071M-NH-TS combination ammonium ion/temperature electrode. Meter, calibration standards and sample-conditioning reagents are purchased separately.
| Ordering detail |
Configuration |
| Product |
IndSen 2071M-NH-TS |
| Manufacturer part number |
AI4517 |
| Blue Tiger SKU |
BTS-AI4517 |
| Order unit |
One replacement electrode |
Understand the
ultra-firm PVC membrane.
Apera’s ultra-firm PVC design uses a solid electrolyte reservoir and ion-active materials to strengthen the sensing membrane. The manufacturer comparison illustrates how it differs from an ordinary liquid-electrolyte PVC membrane. This construction description applies to the PVC ion-electrode family.
Apera manufacturer PVC-membrane construction and comparison diagram. Tap or click the image for a larger view.
Apera IndSen family construction diagram. The analog 2071M is shown on the right; digital and separate measuring versions are not included. Tap or click the image for a larger view.
Measuring element, reference
and temperature function.
The handbook diagram distinguishes IndSen 2071M analog combination electrodes from 2071S digital models and 1121M measuring electrodes. The analog 2071M branch is the relevant family here; the other architectures are shown for comparison.
Match the exact electrode connection and temperature support to the meter. A shared body shape or plug appearance is not sufficient to establish interchangeability.
Calibrate for the sample.
Control what affects stability.
Calibrate with suitable ion standards, then prepare standards and samples using the same method. The 400-series ion mode supports one- to three-point manual calibration; select appropriate points for the samples you expect.
Ionic strength, interfering ions, temperature, sample pH and deposits can affect the reading. Apera’s handbook checklist shows why electrode selection and sample preparation belong in the same workflow.
Manufacturer handbook checklist of factors affecting ISE measurement stability. Tap or click the image for a larger view. Check the sample window.
| Specification |
Detail |
| Target ion |
Ammonium |
| Electrode range |
0.18–9000 mg/L |
| Sample pH |
2–8.5 |
| Electrode temperature |
5–50°C |
| Membrane |
Ultra-firm PVC |
Condition and calibrate with the correct ammonium standards. Maintain the specified pH and temperature window and control interfering ions. The electrode directly responds to ammonium. Total ammonia nitrogen and un-ionized ammonia require the appropriate method and conversion; they are not interchangeable readings.
Condition, rinse
and store by electrode type.
Follow the instructions for this ion-selective electrode when conditioning, cleaning and storing it. Use appropriate standards to check response after maintenance. The measuring membrane and reference junction need contact with the prepared sample during measurement.
The PVC family uses solid-electrolyte technology; this does not remove the need for conditioning and calibration. Use model-specific care instructions rather than applying a general pH-probe soaking routine to every ISE.
Match the meter
and connection.
Apera catalog connector reference. Match the exact sensor, signal and temperature requirements; connector appearance alone is not a compatibility guarantee. Tap or click the image for a larger view.Compare the current ION400-K, PION400-K, ION400-NH and PION400-NH platforms, then confirm this electrode’s target ion and supported connection.
IndSen 2071M-NH-TS buyer questions
What does the IndSen 2071M-NH-TS measure?
This combination ion-selective electrode measures ammonium ions (NH₄⁺) in a suitably prepared aqueous sample. It requires a compatible ion meter.
What is its ammonium measuring range?
Apera specifies 0.18–9000 mg/L for this ion-electrode family. Calibration, sample composition and interferences determine the practical working range.
What temperature and pH conditions are required?
The specified electrode operating window is 5–50°C, with sample pH 2–8.5. Check both before selecting the sensor.
Is a separate reference electrode needed?
The combination design integrates the ion-selective measuring element and reference system. A compatible meter, standards and any method-specific conditioning solutions are still needed.
Does it include temperature measurement?
The -TS configuration is the temperature-compensated version. Confirm the meter’s connection and temperature-sensor support before ordering; matching a plug alone is not sufficient.
Can I use it to measure a different ion?
No. This version is selective for NH₄⁺. Other ions require their own electrodes and calibration.
Does this measure a total concentration?
The electrode directly responds to ammonium. Total ammonia nitrogen and un-ionized ammonia require the appropriate method and conversion; they are not interchangeable readings.
What should I prepare before first use?
Obtain suitable ammonium calibration standards, follow the electrode conditioning instructions, and apply the method’s pH, ionic-strength and interference controls. This listing is for the electrode, not a complete meter kit.
Confirm the exact configuration before ordering.
Review IndSen 2071M-NH-TS AI4517 against your measurement method, sample limits and host connection. Return to the price and ordering controls when the configuration fits your work.
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