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A conical tip for viscous samples.
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APERA INSTRUMENTS / LABSEN 851-1 / AI3110
LabSen 851-1 is a refillable glass pH electrode for viscous samples such as skincare products, cosmetics and coatings. Its conical membrane and triple ceramic junction work with Protelyte reference solution and a silver ion trap to reduce junction clogs. It has a BNC connector.
It reads pH 0 to 14 from 0 to 100°C. Catalog AI3110. Apera warrants LabSen electrodes for six months from delivery.
Only published products are linked. Other cards provide model-comparison information and do not indicate current storefront availability.
Start with what makes your sample difficult. Published families link to their product pages. Other models are shown for comparison only; confirm the exact connector and host before choosing.
AI3141 / AI3153
Proteins, dairy, biotech
Protelyte electrolyte and triple ceramic junction.
AI3109 / AI3177 / AI3239
Strong acids, HF
HF-resistant glass; spot measurements below 0.1 mol/L HF.
AI3145 / AI3179 / AI3237
pH 12–14, salinity >0.5%
HA glass minimizes alkaline error; silver ion trap.
AI3110
Skincare, cosmetics, coatings
Conical membrane with Protelyte and triple ceramic junction.
AI3165
Coatings, syrups, resin, glue
Pre-pressurized gel KCl with low-impedance S membrane.
AI3168 / AI3180 / AI3243
Viscous, alkaline or salty
Pre-pressurized gel KCl and HA glass; BNC, BNC/RCA or 8-pin.
AI3167 / AI3176 / AI3241
Hot, caustic, electroplating
PHY glass and PTFE ring junction, rated to 130°C.
AI3147
Organic solvents
PHY glass, double junction with 1M LiCl outer bridge.
It plugs into any pH meter with a BNC input. It has no temperature sensor, so pair it with a separate temperature probe such as Apera’s MP500 where compatible with the meter, for automatic temperature compensation; manual temperature entry is an option only if the meter supports it at the sample temperature. Electrode ratings do not extend the meter’s or separate temperature probe’s operating or compensation limits.
Shaped for viscous samples; Apera rates it 10 times stronger than traditional glass.
The reference system reduces junction clogs in thick samples.
Three ceramic junctions keep electrolyte flowing.
Key figures: pH range 0–14; temperature range 0–100°C; body lead-free glass; glass membrane conical; junction ceramic × 3; reference electrolyte Protelyte.
The full specification table is in the Product Specifications tab.
Keep the electrode wet in Apera Protelyte storage solution when it is not in use.
Never store a pH electrode in pure, deionized or distilled water.
It is refillable: keep the fill hole open while measuring and top up the reference electrolyte when the level drops.
Apera’s manual advises avoiding strong acids, strong alkalis and dehydrating media such as absolute ethanol or concentrated sulfuric acid; if exposure is unavoidable, keep immersion short and clean the electrode carefully afterward.
Rinse with distilled or deionized water between samples. For stubborn deposits, use Apera electrode cleaning solution, then recondition and recalibrate.
Calibrate with fresh pH 7.00, pH 4.00 and pH 10.01 buffers.
LabSen 851-1 is a refillable glass pH electrode for viscous samples such as skincare products, cosmetics and coatings.
Yes. LabSen 851-1 uses Protelyte reference solution for refilling, not a sealed pre-pressurized gel system. Keep the fill hole open during measurement.
Keep the electrode wet in Apera Protelyte storage solution when it is not in use. Never use pure, deionized or distilled water.
LabSen 851-1 (AI3110; BTS-AI3110) uses BNC for pH and has no built-in temperature sensor. ATC requires a separate meter-compatible sensor; manual temperature entry must be supported by the host.
The current US specification is pH 0–14 and 0–100°C. The connected meter and temperature sensor must also cover the actual sample conditions.
A conical glass membrane, three ceramic junctions, Protelyte electrolyte and a silver ion trap reference system are designed for samples such as skincare products, cosmetics and coatings. Its listed body size is Ø12 × 120 mm.
No general chemical-resistance claim is made. Its manual advises avoiding strong acids, strong alkalis and dehydrating media such as absolute ethanol or concentrated sulfuric acid. If exposure is unavoidable, keep immersion brief and clean carefully afterward; store and recondition in Protelyte.
Apera warrants LabSen electrodes against defects in material and workmanship for six months from delivery. Accidental damage, improper use and normal wear are excluded.
Check the connector and catalog number (AI3110) against your meter and samples, then return to the live price and ordering controls.
APERA INSTRUMENTS, LLC warrants LabSen electrodes to be free from defects in material and workmanship for SIX MONTHS from the delivery.
This limited warranty does NOT cover accidental damage, improper use, normal wear and tear, transportation, storage, failure to follow the product instructions, unauthorized maintenance, modification or repair, or external causes beyond Apera's reasonable control.
Official Apera documents are labeled by model and scope below. Each whole card opens a PDF in a new tab.
email us here: info@bluetigerscientific.com or live chat
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