PH8500-DP for dairy products with GLP memory function and data output


Plus 19% MwSt. DE
SKU: 28APE190077 / AI5552 Categories: , , , Tag:

The PH8500-DP 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 particularly suitable for measuring dairy products (milk, yogurt, buttermilk, etc.) and other liquid foods such as jam, barbecue sauce, syrup, etc…. The pH electrode included in the scope of delivery LabSen® 823 has been specially designed to perform fast, accurate and reproducible measurements without the diaphragm being blocked by proteins or sulfides. The electrode has an integrated temperature sensor, which enables automatic temperature compensation (ATC). The PH8500-DP 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® 823 pH electrode for fast and precise measurements of dairy products and other liquid foods
  • 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).


The LabSen® 823 from Apera Instruments is a pH electrode with integrated temperature sensor and is manufactured using proprietary Swiss sensor technology and materials. It is specially designed to measure proteinaceous solutions, so it is suitable for dairy products such as milk, cream, yogurt and other liquid food products such as mayonnaise, jam, BBQ sauce, syrup and so on.

Silver ion trap reference system + protelyte electrolyte – The LabSen 823 electrode is equipped with a silver ion trap reference system and a protelyte reference solution. In addition to the long-life reference system, a silver ion trap is incorporated to prevent protein blockage or contamination of the diaphragm.

LabSen S-Type Hemispherical Glass Diaphragm – Thanks to the low-resistance and rugged glass diaphragm, the electrode delivers fully stabilized readings in 15 to 30 seconds, yet is up to 10 times more rugged than conventional products, significantly reducing the likelihood of the electrode breaking during impacts. It can be used at temperatures up to 100°C.

Patented pH/Temperature Combination Structure – The temperature probe is placed in an independent cavity under the pH glass membrane. With the built-in thermally conductive medium, the temperature sensing capability can be increased by 40%, which significantly improves the response time and stability of the pH electrode.

Measuring range (0 ~ 14) pH Electrolyte Protelyte
Recommended operating temperature (-5 ~ 100) °C Storage solution Protelyte
Shank material Lead free glass Temperature sensor NTC 30kΩ
Diaphragm type S Electrode dimension (Ø12×120) mm
Membrane resistance <200MΩ Connection BNC/RCA
Reference system Silver ion trap Cable Ø5mm×1m
Diaphragm Ceramic x 3

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 locations 500 records
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® 823 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 LabSen823 DE
English PH8500 EN Apera LabSen823 EN