APERA INSTRUMENTS / PH700-VS / AI5016

Give viscous liquids a reference designed to flow.

The PH700-VS combines a bench meter with the LabSen 853-H pH/temperature electrode for selected viscous liquids. A pre-pressurized reference helps sustain electrolyte outflow where thick sample residues challenge ordinary junctions. It is not permission to test every formulation without preparation.

Choose AI5016 for suitable water-based coatings, skincare emulsions, syrups and similar liquid matrices under an approved laboratory method. Match chemistry as well as viscosity. The included glass sensor is not a spear tip, a universal solvent probe or a maintenance-free substitute for good sample handling.

Pressure supports the reference contact

The pre-pressurized gel KCl reference is designed to maintain outflow through the ceramic junction in viscous samples. Residue can still accumulate; cleanliness and stable sample contact remain essential.

HA glass for the intended sample

The hemispherical HA membrane is designed for reduced alkaline error, with a silver-ion-trap reference. The current US kit manual specifies pH 0-14 and 0-100°C for the 853-H. These limits do not establish universal resistance to solvents or aggressive chemicals.

Two leads, one combined electrode

Connect the blue BNC to pH/mV and black RCA to TEMP. The included NTC 30 kΩ sensor provides temperature input for automatic compensation. No separate temperature probe is required; compensation does not standardize every formulation to one temperature.

Water-based coatings and compatible liquid adhesives

Establish chemical fit and a representative aliquot before testing.

Suitable skincare emulsions

Use the formulation’s approved method, including any specified preparation and reporting basis.

Syrups and other compatible viscous aqueous liquids

Control sample temperature and prevent residue from carrying over into the next measurement.

Make sample preparation part of the result.

Use a representative, homogeneous aliquot prepared according to the product’s laboratory method. Control the measurement temperature and use calibration standards reasonably close to that temperature. Perform at least a two-point calibration before initial use, following the kit manual and the expected sample range.

Rinse the probe, then immerse the sensing membrane and junction adequately in the liquid. Brief gentle movement helps release trapped bubbles; let the probe stand still and record only a stable reading. Thick samples must make real contact with the junction, not merely coat part of the glass.

Do not impose a universal dilution ratio on cosmetics, coatings or syrups. If the approved method calls for dilution, extraction or dispersion, report the prepared sample accordingly. An extract is not automatically the undiluted product’s pH. Anhydrous and non-aqueous products require separate method and electrode assessment.

Keep the junction clear without opening the reference.

The 853-H is non-refillable. Its internal pre-pressurized gel KCl reference is sealed; do not treat the external storage solution as an instruction to add electrolyte inside the electrode. Inspect and handle the glass gently; it is not breakproof.

Remove residues after each sample and rinse between standards and measurements. Never rub the sensing membrane. Use the exact kit manual’s contaminant-specific cleaning, rehydration and recalibration guidance when ordinary rinsing is insufficient. Do not improvise strong chemical mixtures for stubborn coatings.

Between sessions, keep the tip and junction hydrated in the tightly closed storage vial with 3M KCl solution. Pure water is for rinsing, not long-term storage. Keep the BNC and RCA connections dry. Cleaning and storage supplies beyond the documented kit contents should be planned separately.

Bench electronics, local records.
Not a computer-export workflow.

PH700 supports 1-3 pH calibration points and 50 manually saved sets shared across pH/mV. The instrument display range is 0-14.00 pH with selectable 0.01/0.1 pH resolution and stated ±0.01 pH ±1 digit accuracy; these do not establish unrestricted probe/matrix accuracy.

M+ saves a stable result and RM recalls it. No documented USB/PC export, automatic interval recording, date/time field or certified audit trail is promised. Optional ORP needs a separate appropriate ORP electrode; the supplied pH electrode in mV mode gives its pH signal, not ORP.

Make the connector and temperature arrangement explicit.

Use this exact kit’s configuration and sensor guidance. Mechanical connector fit alone does not establish complete electrical, temperature or sample compatibility. The micro-volume configuration differs from the integrated-temperature kits.

Signal processing is one part of the method.

This manufacturer electronics illustration refers to the PH700 instrument. Appropriate electrode selection, calibration and sample handling still govern the result. It does not establish extra logging/export features or a separately tested performance guarantee.