APERA INSTRUMENTS / PH700-BC / AI5018

A reference system chosen
for protein-rich liquids.

Build a dedicated bench station for biological liquids, TRIS buffers and liquid food samples. PH700-BC pairs the PH700 meter with the refillable LabSen 823 pH/temperature electrode, bringing a silver-ion-trap reference, three ceramic junctions and Protelyte electrolyte to protein-containing samples.

Choose this configuration for its sample-facing reference system, not a different meter accuracy claim. The supplied glass electrode is intended for liquids, not penetration into solid foods.

Reference chemistry with a purpose

The silver-ion-trap reference and Protelyte solution are designed to reduce protein-related junction fouling. Three ceramic junctions provide the reference contact with the sample; cleaning remains part of the method.

One electrode, two measurements

LabSen 823 combines pH and an NTC 30 kΩ temperature sensor. Connect blue BNC to pH/mV and black RCA to TEMP for automatic temperature compensation.

A refillable working electrode

The visible glass body lets the operator check the reference-solution level. Maintain it with the specified Protelyte solution rather than treating this as a sealed, disposable reference system.

Biological and enzyme solutions

A focused option for protein-containing laboratory liquids. Match sample composition, cleaning and calibration to the work; suitability is not a clinical diagnostic claim.

TRIS and pharmaceutical liquids

Select the protein/TRIS-oriented reference system for compatible formulations. The kit does not replace a validated pharmaceutical test procedure.

Liquid food and beverage samples

Use for appropriate milk, yogurt, sauce and related liquid samples. Confirm consistency and immersion requirements rather than assuming every thick or solid food can be tested directly.

Keep the reference flowing.
Keep the method consistent.

Before measurement, remove the storage vial, rinse the electrode and open the blue refill plug so reference solution can flow as intended. Secure the electrode in the simple holder without letting the glass tip strike the vessel.

Perform at least a two-point calibration before first use. Start at the neutral standard for the selected buffer series, then choose additional points around the expected sample. Use clean portions of buffer and rinse between standards and samples.

Immerse the sensing tip and junctions appropriately, then allow the reading to stabilize. Automatic temperature compensation addresses electrode response, not every temperature-dependent change in the sample. Strong chemistry, dehydrating media, pure water and extreme-temperature work require separate suitability review.

One specified solution.
Two separate care tasks.

Use Protelyte AI1190 inside the refillable reference and in the external storage vial. When the reference level falls to about half the electrode height, replenish it through the refill opening as instructed. Do not substitute generic KCl.

After testing, rinse away sample residue, return the electrode to its Protelyte storage vial, tighten the cap and close the refill plug. Replace contaminated soaking solution. Distilled or deionized water is for rinsing, not long-term storage.

Protein deposits need attention before they affect the next measurement. Follow the electrode-specific cleaning, conditioning and recalibration instructions. Keep connectors clean and dry. Additional Protelyte and refill tools are maintenance purchases, not extra items promised in the kit.

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.

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.