The HORIBA LAQUAtwin pH-11B is a compact pocket pH meter that measures pH from just a few drops placed directly on its flat sensor. Built around HORIBA's proven glass-electrode technology, it needs as little as 0.1 mL of sample (or 0.05 mL when using the included Sampling Sheet B). With up to 2-point calibration, automatic standard-solution recognition, and automatic temperature compensation, it delivers reliable readings in the lab, in the field, and everywhere in between.
Its IP67 waterproof and dustproof body, light ~50 g weight, and pocket-friendly case make it ideal for water quality testing, agriculture, food, education, and research.
● Flat sensor measures liquids, solids, and powders (with a drop of pure water)
● Up to 2-point calibration with automatic standard-solution recognition
● Automatic temperature compensation for stable readings
● Auto-Stability & Auto-Hold functions lock in a steady value
● Auto power-off (30 min) and battery-level indicator
● Replaceable sensor — extend the life of the meter
● IP67 waterproof/dustproof, compact ~50 g body
● HORIBA LAQUAtwin pH-11B main unit ×1
● pH standard solutions (pH 6.86 / pH 4.01), 14 mL each ×1
● Sampling Sheet B ×5
● Dropper (spoit) ×1
● Coin lithium batteries (CR2032) ×2
● Instruction manual / Quick manual / Storage case
The included pH standard solutions are water-based and non-hazardous. For international transport, they are carefully packed in leak-proof bags with absorbent material to prevent any spillage.
The invoice will be marked accurately as "pH meter with buffer solution (non-hazardous, water-based)."
Order Processing and Handling Time
All items are shipped directly from Japan. After payment is confirmed, we complete dispatch within 10 business days (excluding weekends and holidays). Shipping is via EMS, DHL, or FedEx to destinations worldwide.
International Buyers — Please Note
Buyers in the United States: All import duties and taxes are included in the listed price (DDP). No additional charges will occur after checkout.
Buyers in all other regions: Import duties, taxes, and fees are not included in the item price or shipping cost. These are the buyer's responsibility. Please check with your local customs office in advance.
Customs Declaration: All shipments are declared accurately at their full value in compliance with applicable regulations.
Return Policy
Returns are accepted within 60 days of the order date. Refunds are processed after the returned item arrives in Japan and passes our inspection. For buyer-caused returns (wrong size, change of mind, etc.), the original outbound shipping cost is non-refundable. Except for reasons such as a defect, a discrepancy from the description, or damage in transit, a restocking (re-delivery) fee applies to returns. Items cannot be accepted for return unless they are unused and in the same original condition as delivered.
Thank you for visiting my listing. I carefully pack and ship each item myself from Japan. If you have any questions about this meter, please feel free to message me — I'm always happy to help.
— Mizuki / Castle Gate