APERA INSTRUMENTS / ION400-BR / AI4394
Bromide ion results.
Ready for a portable testing routine.
The Apera ION400-BR is a portable bromide ion meter kit for bromide-ion analysis in aqueous laboratory samples and process-water methods. Its dedicated Br⁻ electrode supports ion-selective measurement while the IP57 meter brings a backlit display and guided calibration to bench or field work.
The bromide electrode is specified for 0.40–7990 mg/L, sample pH 2–11 and 5–60°C. Choose PION400 when the same workflow also needs pH; choose ION400 when ion concentration, mV and temperature cover the task.
Apera ION400 platform reference. Displayed ion and case layout are illustrative; configuration-specific electrodes and reagents vary. Tap or click the image for a larger view. Choose your ion meter kitClick or tap to compare your optionsCompare below — click or tap here to close
Choose the ion you report, then decide whether you also need pH. Each ion requires its own sensor, calibration standards and sample-conditioning method.
Linked cards open current store listings. Other cards compare configurations; they do not imply current storefront availability.
See the 400-series
measurement platform.
Apera catalog illustration of PION400 and ION400 meter platforms and ion-electrode technology. Tap or click the image for a larger view.The platform supports ion-selective testing with the corresponding electrode and calibration. Changing an ion setting does not turn one selective membrane into a sensor for every ion.
Know the configuration.
Plan the calibration supplies.
ION400 portable meter and the bromide ion-selective electrode configuration identified by manufacturer part number AI4394. Calibration solution concentrations, bottle sizes and the complete accessory pack should be confirmed for the ordered configuration; the family photo does not show an itemized kit.
| Ordering detail |
Configuration |
| Meter configuration |
ION400-BR · AI4394 |
| Target ion |
Bromide |
| Electrode measurement range |
0.40–7990 mg/L |
| Calibration and conditioning supplies |
Use ion-specific standards and the method-appropriate ionic-strength adjuster; verify bottle sizes and the accessory pack for this catalog number. |
Apera carrying-case layout reference, shown with a potassium kit. This image does not identify the exact standards or bottle sizes supplied with this ion configuration. Tap or click the image for a larger view.
Apera IndSen 2071M electrode-family reference; the membrane chemistry is selected for the target ion. Tap or click the image for a larger view.
Meet the bromide
ion-selective electrode.
The dedicated solid-state membrane responds selectively to bromide in a prepared aqueous sample. The combination design brings measuring and reference functions together; temperature support must match the meter.
Condition and calibrate the bromide electrode with suitable standards before measurement. Keep samples within 2–11 pH and 5–60°C; apply the method-specific ionic-strength adjustment and interference controls. Measures bromide ions, not bromine disinfectant residual, free bromine or total bromine.
Understand the
solid-state sensing membrane.
This bromide version uses a solid-state membrane. The manufacturer classification separates PVC, solid-state and crystalline sensors because different ions call for different sensing materials. PVC durability and storage claims should not be transferred to every membrane type.
Apera manufacturer classification of ion-selective electrode membrane technologies. 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 |
Bromide |
| Electrode range |
0.40–7990 mg/L |
| Sample pH |
2–11 |
| Electrode temperature |
5–60°C |
| Membrane |
Solid-state |
Condition and calibrate the bromide electrode with suitable standards before measurement. Keep samples within 2–11 pH and 5–60°C; apply the method-specific ionic-strength adjustment and interference controls. Measures bromide ions, not bromine disinfectant residual, free bromine or total bromine.
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.
ION400-BR buyer questions
What does the ION400-BR measure?
It measures bromide ions (Br⁻) with the corresponding electrode, plus mV and temperature. This ION400 configuration does not add a pH measurement mode.
What is the bromide electrode range?
Apera’s electrode-family catalog specifies 0.40–7990 mg/L. The usable sample range also depends on calibration, interferences and sample preparation.
Which sample conditions must I check?
The electrode specification calls for 5–60°C and a sample pH of 2–11. These limits are narrower than the meter’s general temperature display range.
Does this report every form of bromide?
Measures bromide ions, not bromine disinfectant residual, free bromine or total bromine.
How do I calibrate the ion measurement?
Use suitable bromide standards and the meter’s 1–3 point manual ion calibration. Match the sample-conditioning procedure between standards and samples.
Can I measure another ion with the same electrode?
No. The bromide electrode is selective for Br⁻. Measuring another supported ion requires the corresponding electrode, standards and calibration.
How does ION400 differ from PION400?
ION400 focuses on ion concentration, mV and temperature. PION400 adds pH measurement capability; choose it when your workflow also calls for pH testing.
Is the meter suitable for field work?
The meter has an IP57 waterproof and dustproof rating and uses four AA batteries. Protect connections and follow the operating instructions; the rating does not remove sample and electrode operating limits.
Confirm the exact configuration before ordering.
Review ION400-BR AI4394 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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