1 Brief Introduction
Thank you for purchasing the Apera Instruments SX811-SS portable food pH meter.
This device is an outstanding combination of advanced electrical, sensor technology and software design.
The meter is equipped with LabSen753 spear pH electrode, suitable for testing meat, bread, fruit, and
dairy products such as cheese, yogurt and other solid or semi-solid food sample’s pH value. It could also
be used for testing soil and regular aqueous solutions.
1.1 Features
• This microprocessor-based meter features automatic calibration, automatic temperature
compensation (ATC), menu set-up, calibration reminder, calibration date checking, automatic
powe-off and low-battery warning.
• GLP data management，clock display, manual storage and automatic timing storage, USB port
and power outage data protection, your data is safe even with a dead battery.
• Advanced digital processing technology improvs meter responding time and accuracy. There are
reading stability display mode and automatic lock-up display mode.
• IP57 waterproof, operable under extreme conditons. Powered by 3 AA batteries or USB
connection to other power source. Solid and durable case，accessories are included.
• 1-3 points automatic calibration, calibration guide and self diagnose.
• Automatically recongnize pH standard buffer solutions.
1.2 Features of the LabSen 753 Spear pH Electrode
Swiss pH sensor technology
Food grade stainless steel housing, solid and durable
Using solid electrolyte as reference solution, it does not contanminate test samples, suitable for
samples that are rich in fat and proteins.
1.3 Proper use and maintenance of the LabSen 753 Electrode
a) After each test, the electrode must be rinsed thoroughly with distilled water to prevent
contamination. If the contaminents (such as grease or stains) cannot be rinsed off easily, users
can use a soft brush with soap water to clean them off.
b) This electrode needs to be stored in the Polymer solution when not in use. Do not store the
electrode in dry environment. The Polymer solution (50ml) is provided with the meter kit.
Replace the polymer solution in the probe cap if contaminated.
c) pH electrodes age and gradually lose accuracy over time. We recommend replacing the aged
electrode with a new one after 1-year of regular use to ensure the best accuracy.
d) To prevent damaging the electrode, please bore a hole (with a knife) in hard samples and then
insert the electrode into the hole for testing.
e) To prevent rusting, please do not scratch the stainless-steel casing of the electrode with sharp
object or sand paper.
To Next Page
