PH8500-SA pH meter for strongly alkaline solutions with GLP memory function and data output


Plus 19% MwSt. DE
SKU: 28APE190084 / AI5523 Categories: , , , Tag:

The PH8500-SA from Apera Instruments is a handy and easy-to-use meter for the determination of pH, ORP (electrode sold separately e.g. 301Pt-C) and temperature. It is ideal for making precise and reliable measurements of solutions with a strongly basic/alkaline character (up to 14 pH). The LabSen® 841 pH electrode included in the scope of delivery is equipped with a special HA glass membrane, which ensures that the alkali error is minimized when measuring high pH values. The electrode can be used at temperatures up to 130°C (266°F) and is therefore also suitable for high-temperature solutions. An MP500 temperature sensor is included in the set for temperature measurement. The PH8500-SA is protected by a silicone cover and is waterproof and dustproof (IP57), making it particularly well suited for field use, even in harsh environments. Furthermore, the meter has a memory function and GLP data management with storage space for up to 500 memory groups. It can be connected to a PC or laptop via USB to either read out the memory groups or perform real-time storage.

  • Equipped with the LabSen® 841 pH electrode for strongly alkaline solutions and high-temperature solutions
  • Silicone case provides safe & firm grip and protects from shocks
  • Waterproof and dustproof (IP57) for use in harsh environments
  • Fold-out stand for convenient indoor operation
  • Quick and easy 1- to 3-point calibration
  • Large, illuminated LCD simultaneously displays conductivity value and temperature, as well as additional measurement and calibration information
  • GLP data management (500 memory groups) with data output via USB, also with real-time storage function
  • Self-diagnosis supports calibration or troubleshooting

The meter is RoHS and EC certified and has a 3 year warranty (6 months on the electrode).


LabSen electrochemical electrodes are premium pH electrodes with manufacturing technology and key components from Switzerland. The LabSen841 electrode is equipped with a special H-glass membrane suitable for high temperature and strong basic solutions.

This electrode has the following features:

  • Impact resistant diaphragm, there is no risk of electrode rupture during normal use.
  • Tested at high temperature and good ground condition, the lifetime of the electrode is five times longer than normal electrodes (test condition: 60 °C, 1 M NaOH solution).
  • Blue gel electrolyte, does not flow and does not cause air bubbles.
  • The silver ion trap reference system prevents contamination of the diaphragm if the test sample contains sulfides and proteins.
Measuring range (1 ~ 14) pH Electrolyte 3M KCl
Recommended operating temperature (0 ~ 130) °C Storage solution 3M KCl
Membrane type HA Membrane resistance <500MΩ
Shank material Lead free glass Electrode dimension (Ø12×120) mm
Reference system Silver ion trap Connection BNC
Diaphragm Ceramics Cable Ø3×1m


Technical Specifications

pH Measuring range -2.00 to 16.00 pH
Resolution 0.1/0.01 pH
Accuracy ±0.01 pH ±1 digit
Temperature compensation 0 to 100 ° C (automatic or manual)
calibration 1 to 3 points, automatic
mV Measuring range ±2000 mV
Resolution 0.1/1 mV
Accuracy ±0.1% F.S ±1 digit
Temperature Measuring range 0 to 100 °C
Resolution 0,1 °C
Accuracy ±0.5 °C ±1 digit
More Memory space 500 sets
Data content Numbering, date, time,

Measured value, unit, temperature

Interface USB
Power supply 3 x AA batteries / DC 5V (USB port)
IP rating IP57
Electrode connections BNC (pH/ ORP), 8-pin (conductivity),

RCA (temperature)

Dimensions / Weight 88x170x33 mm / 313g

with case: 360x270x76 mm / 1,3 kg

scope of delivery

A complete set contains:

  • PH8500 pH meter
  • LabSen® 841 pH electrode
  • Calibration solution (pH 4.00; pH 7.00; pH 10.01) 50ml each
  • USB cable
  • USB stick with PC-Link software
  • Screwdriver
  • manual
  • Carrying case


German PH8500 DE Apera LabSen841 DE
English PH8500 EN Apera LabSen841 EN