APERA INSTRUMENTS / EC9500 / AI5632

More context for conductivity.
One organized bench.

The EC9500 combines conductivity measurement with derived TDS, salinity and resistivity, plus temperature and record-identification tools. Its 2401T-F glass EC/temperature probe and 606 TestBench keep the sensing cell, standards and stirring station together. USB data handling supports a documented workflow from stable reading to reviewed export.

Choose EC9500 for finer conductivity accuracy and richer record context. Its 2000 mS/cm electronics range does not extend the supplied 2401T-F probe beyond 200 mS/cm.

Accuracy with a clear boundary

Conductivity accuracy is ±0.5% of full scale ±1 digit, not percent of reading. Higher-range electronics require an appropriate optional electrode above the supplied cell’s rating. TDS, salinity and resistivity have separate manual accuracy specifications of ±1% full scale ±1 digit.

A complete EC sensing connection

The 2401T-F combines a K=1.0 platinum-black conductivity cell and NTC 30 kΩ temperature sensor in lead-free glass. Connect its BNC for EC and RCA for temperature. No LabSen pH electrode or separate MP500 is needed or supplied.

Context at the instrument

Sample, electrode, user and company identifiers help organize records. The on-screen keyboard, i-Guide and calibration reminder support setup; an optional calibration password restricts calibration access. These controls do not establish electronic signatures or regulatory compliance.

Know what this configuration supplies.

Method development

Compare compatible aqueous formulations while documenting temperature, cell choice and compensation settings. Resistivity adds another view of conductivity, not an independent proof of chemical purity.

Salt-solution comparisons

Select Linear, NaCl or Saltwater salinity processing as appropriate. The choice matters: a conductivity-derived estimate cannot describe every mixture with one universal conversion.

Shared laboratory records

Use identifiers and dated manual or timed logging to keep sample context with results. Review exports and field mappings before adopting a downstream reporting or laboratory-information workflow.

Clear the cell.
Control the comparison.

Connect the 2401T-F BNC to conductivity and RCA to its temperature input. Remove the storage cap and rinse with distilled or deionized water. Confirm K=1.0; follow the probe manual’s two- to three-point calibration for a new electrode. Keep connectors dry.

The Standard series recognizes 84 µS/cm, 1413 µS/cm, 12.88 mS/cm and 111.8 mS/cm for one to four points. Only the first three are supplied. Use clean portions and rinse between solutions. Select reference temperature, compensation coefficient and TDS factor for the method.

Submerge the sensing cavity without striking the vessel. Gently stir to release trapped bubbles, then allow the reading to stabilize. Stirring changes can affect readings, so keep mixing conditions consistent and avoid a vortex. Log sample temperature with the result; temperature compensation is not temperature control.

Water in the cap.
Gentle handling at the cell.

Rinse before and after measurements. Remove excess water without rubbing or brushing the platinum-black surface. A sample rinse can limit dilution. Keep the glass cell clear of the stir bead and vessel wall.

Return the 2401T-F to its cap containing distilled or deionized water. Replace dirty water and avoid prolonged dry storage. This is not pH-reference refill solution: do not substitute KCl or apply LabSen storage instructions.

For persistent deposits, follow the electrode manual rather than improvising aggressive cleaners. Check a suitable standard after cleaning and recalibrate when necessary. Keep connectors dry and protect the glass during movement.

A stable reading is the start of the record.

Use the physical meter controls for measurement and calibration, then record or save a stable result. A held display and a stored record are different functions. Screen values in photographs are illustrative, not measurements of your sample.

Use calibration solutions and settings appropriate to the parameter and fitted electrode. Temperature compensation does not make different sample temperatures, preparation methods or chemistry equivalent. Follow the model-specific meter and electrode instructions before extending the method to a new sample.

Context in the record.
Portable files from USB.

EC9500 offers manual and timed logging with date/time and calibration information. Its linked manual specifies 1000 stored sets for EC9500; published capacity descriptions differ, so confirm capacity if it is critical to your workflow.

Web PC-Link 9500 provides a USB browser workflow on desktop Chrome or Edge, with CSV and JSON exports and browser printing. The interface and export functions are documented; no physical meter connection was tested here. Verify your computer, cable and device setup before routine use.

CSV can be opened in spreadsheet software; browser printing is not a native PDF exporter. Export and back up records deliberately. Optional TH192G pin-type printing is separate hardware, not thermal printing; stored meter records must first transfer to a PC rather than print directly from meter memory.