Apera Instruments SX721 Portable pH ORP Meter Set

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Product details

The portable pH/ORP meter set SX721 from Apera Instruments is a highly advanced solution for precise water quality analysis. This comprehensive set combines both pH and ORP measurement functions, making it ideal for use in the field as well as in the laboratory. With advanced digital filter technology, the device optimizes response speed and measurement accuracy, while a stability indicator ensures consistent and reliable readings. The set is equipped with a special pH electrode and an ORP electrode, both designed for precise measurements under various conditions. Its robust construction with IP57 certification protects the device from water and dust, making it a durable companion for professionals in environmental testing. A large, backlit LCD display ensures clear visibility, while the automatic shut-off feature extends battery life. The set comes in a sturdy carrying case that allows for organized transport and protection of the components.

  • Digital filter technology for improved measurement accuracy
  • Automatic calibration and temperature compensation
  • Memory capacity for up to 200 data sets
  • IP57 water and dust protection for durability
  • Includes pH and ORP electrodes for versatile applications.

Key specifications

Detector type
pH measuring instrument

General information

Item number
61390160
Manufacturer
Apera Instruments
Category
Detectors
Manufacturer no.
AI463
Release date
29.8.2025

Detector properties

Detector type
pH measuring instrument
Calibrated according to
Factory standard (without certificate)
Sensor Type
Pt1000
display type
Digital

Power supply

Power supply
Battery operated

Battery properties

Battery type
Alkali
Battery equipment
No batteries supplied
Charger equipment
No charger supplied
Battery size
AA / LR6 / LR06 / Mignon / R6 / R14505

Scope of delivery

Scope of delivery
ORP electrodePh-electrodeTote bag

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Detectors» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • 10.Bosch Professional
    0.5 %
  • 10.Greisinger
    0.5 %
  • 12.Apera Instruments
    0.6 %
  • 12.Testo
    0.6 %
  • 14.Werkstein
    1 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • Apera Instruments
    Not enough data
  • 1.Opple
    0 days
  • 1.TFA
    0 days
  • 3.Joy-it
    3 days
  • 4.Bosch Professional
    4 days

Return rate

How often is a product of this brand in the «Detectors» category returned?

Source: Digitec Galaxus
  • 12.Toolcraft
    2.8 %
  • 12.Voltcraft
    2.8 %
  • 15.Apera Instruments
    2.9 %
  • 16.Extech
    3 %
  • 17.Water ID
    3.1 %
Source: Digitec Galaxus