PH8500-HF pH meter for strong acid and hydrofluoric acid with GLP memory function and data output


Plus 19% MwSt. DE
SKU: 28APE190083 / AI5525 Categories: , , , Tag:

The PH8500-HF 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 acidic character and hydrofluoric acid. The LabSen® 831 pH electrode included in the scope of delivery is equipped with a special HF glass membrane, which is extremely resistant to HF corrosion and thus significantly extends the service life of the electrode. An MP500 temperature sensor is included in the set for temperature measurement. The PH8500-HF is protected by a silicone cover and is waterproof and dustproof (IP57), making it particularly well suited for field use, even in harsh environments. In addition, the meter has a memory function and GLP data management with storage 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® 831 pH electrode for precise and reliable measurements of strong acids and hydrofluoric acid
  • Long service life: HF-containing solutions can be measured approx. 1000 times. (Measurement condition: 25℃, 1% HF concentration, measurement time 1 minute).
  • 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 sensors are premium pH electrodes with manufacturing technology and key components from Switzerland. The LabSen831 pH electrode has a special HF glass membrane suitable for measuring highly acidic solutions, or solutions containing HF (≥pH).

This electrode has the following properties:

Impact resistant diaphragm, there is no risk of electrode rupture during normal use.

  • Extremely long life, can measure HF-containing solution about 1000 times. (Test condition: 25 ° C, 1% HF concentration, test duration 1 minute)
  • Blue gel electrolyte, does not flow and does not cause bubbles.
  • The silver ion trap reference prevents contamination of the diaphragm when the test sample contains sulfides and proteins, which helps to improve the stability and lifetime of the electrode.
Measuring range (0 ~ 12) pH Electrolyte 3M KCl
Recommended operating temperature (0 ~ 100) °C Storage solution 3M KCl
Shaft material lead free glass Diaphragm resistance <400MΩ
Diaphragm type HF Electrode dimension (Ø12×120) mm
Reference system Silver ion trap Connection BNC
Diaphragm Ceramic 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
Further Memory 500 records
Data content

Numbering, date, time,

Measured value, unit, temperature

Interface USB
Power supply 3 x AA batteries / DC 5V (USB port)
Housing protection class 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® 831 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 LabSen831 DE
English PH8500 EN Apera LabSen831 EN