APERA INSTRUMENTS / PH60S-Z / AI3713

Reach into soft samples.
Without forcing the glass.

Apera PH60S-Z measures pH and temperature in moist soft-solid and semisolid samples. Its PH60S-DE spear-shaped glass membrane establishes direct sample contact, with standalone calibration, stability indication and readings.

Choose AI3713 for sacrificial samples, not hard or frozen penetration. The spear is fragile glass. Discard tested food; never return it to the edible batch.

A reference system for soft samples

PH60S-DE combines spear-shaped glass, polymer electrolyte and a double-junction reference without a diaphragm. Its shape helps contact moist material. Never twist, bend or use the fragile tip to open a tough surface.

Calibrate where you measure

Automatic recognition supports 1-3 calibration points. Start at neutral, then select standards for your sample range. The default 0.01 pH resolution is a display increment, not guaranteed sample accuracy.

Useful on its own

Measure, calibrate and use HOLD without a phone. Correctly assembled, the IP67 enclosure floats. Seat caps and connections securely; protect the glass from impact.

Know exactly what is supplied.

Soft food samples

Use on suitable moist samples such as soft cheese, prepared fruit or other compatible semisolid material. Take a sacrificial portion and discard it after measurement. pH alone cannot establish microbiological safety, shelf life or regulatory compliance.

Moist growth media

The replacement probe is intended for suitable solid growth media, but moisture, stones and resistance matter. Use an appropriate preparation method and never drive the glass into dry, compacted or stony material. No universal soil insertion depth is specified here.

Aqueous cross-checks

Measure compatible aqueous solutions, including buffers, with adequate wet contact. Direct and diluted sample methods are not interchangeable; keep preparation consistent.

Prepare a test portion.
Make contact gently.

Remove a representative sacrificial portion of food before testing. Inspect the material for hard inclusions or a resistant outer skin. If necessary, prepare a pilot hole with a clean knife; do not use the electrode to pierce hard rind or frozen material. Insert evenly, without forcing or bending the glass.

Calibrate first with clean buffer portions. Select USA or NIST standards, start at pH 7.00 or 6.86 respectively and wait for stability before confirming. Continue to a suitable second point without powering off, adding a third when appropriate. Rinse between buffers and samples to limit carryover.

Allow sample temperature to stabilize. ATC covers 0-50°C and corrects electrode response, not all chemical pH changes with temperature. The -2.00 to 16.00 pH display range is not universal compatibility with strong acids, alkalis, solvents or extreme samples.

Rinse promptly.
Store the spear wet.

Rinse before and after each measurement to remove food or growth-medium residue. Never wipe or rub the glass tip. Follow the cleaning instructions with a suitable cleaner when deposits persist, then condition in 3M KCl and recalibrate. Do not force an apparently fixed shield or probe part off for cleaning.

Keep the spear in 3M KCl storage solution whenever it is not in use. Do not let it dry out or store it submerged in water. Replace contaminated or depleted cap solution and close the cap securely. Storage-solution replenishment is not a user refill of the internal reference electrolyte.

Replace damaged or exhausted probes with PH60S-DE, AI3713-E. Protect the connector, align without force and tighten the ring. Condition and calibrate before use; a fresh head still needs a consistent sampling method.

Read the meter.
Know what is held.

Use the physical controls for standalone measurement and calibration. The stable-reading indicator and HOLD help you read a result; a held display is not an onboard measurement-history logger for later upload.

Keep the connectors and battery compartment dry when changing parts. Follow the exact manual for key sequences, battery orientation and cap sealing. Screen values in photographs are illustrative, not test results or a promise of compatibility with another sensing head.

Choose a connected workflow.
Keep its limits clear.

The tester measures and calibrates without a phone. Connect a compatible smartphone inside ZenTest, rather than treating operating-system PIN pairing as the measurement workflow. Bluetooth, required phone permissions and a nearby powered tester are needed for new connected readings. A smartphone is not included.

ZenTest offers Simple, Dial, Graph and Table views, with manual and timed recording, measurement/calibration records, and tools for notes, photos and location tagging. Available parameters still depend on the exact body and fitted head. Display choices cannot add pH or conductivity to an unsupported model.

Account and cloud functions depend on the compatible app, service and internet connection. Reviewing already saved records while disconnected is not continuous measurement acquisition outside Bluetooth range. Keep an independent copy of important records and check the current app listing for device compatibility before purchase.

Publisher documentation describes data sharing/export, and Apple release history identifies CSV. Native Excel or PDF reports, exact current logging intervals, and identical export behavior on both operating systems are not promised. Neither the meter nor this app overview establishes an immutable audit trail, regulatory compliance, guaranteed background alarms or offsite safety monitoring. Check your recordkeeping procedure before relying on connected data.