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The Lab 855 for pH measurements is a perfectly suited benchtop meter for measurements in laboratories in the chemical and pharmaceutical industries as well as in medical labs.

Precise measurements

Users can achieve reproducible measured results due to the active automatic AutoRead function with independent detection of stable measuring values. An adjustable calibration timer assists in an increased improvement of the accuracy.

Easy to operate 

The user-friendly keyboard with large, easy to read LCD display, deliver all relevant information at a glance.

Technical specifications

pH Meter Lab 855 pH Meter Lab 865
Measuring range pH -2 … 16. -2000 … 2000 mV. temperature: -10 … 100 °C. ISE 0 … 30000 ppm -2.0 … 20.0 ±0.1 pH. -2.00 … 20.00 ±0.01 pH. -2.000 … 19.999 ±0.005 pH. ±1200.0 ±0.3 mV. ±(2000 ± 1) mV. -5.0 … 105.0 °C ±0.1 °C
Display Graphic LCD Display. 128 x 64 pixel, backlid LCD
Channels 1 1
Protection IP 40 IP 43
Interface USB -
Power supply External power supply 5 V DC of 100 - 240 V. 50/60 Hz. power input: 5 Watt Batteries: 4 x 1.5 V alkali-manganese batteries, type AA
Operating time: Approx. 2500 h (operating hours) Rechargeable batteries: 4 x 1.2 V NiMH rechargeable
batteries type AA
(no charging function)
Power pack: Ktec KSAC 0900110W1UV-1
Input: 100 ... 240 V ~ / 50 ... 60 Hz / 270 mA
Output: 9 V = / 1.1 A
Connection max. Overvoltage category II

Key features

  • Reproducible measuring results with active AutoRead function
  • Simple calibration with adjustable calibration timer
  • Intuitive operation with clearly arranged keyboard
  • Agriculture
  • Environmental
  • Food & Beverage
  • Oil & Gas
  • Pharmaceutical
SI Analytics

Xylem Analytrics Germany manufactures under the label SI Analytics the well known TitroLine® titrators, AVS® viscosity measuring systems, an extensive line of glass capillary viscometers, high-performance laboratory and process electrodes as well as meters for the measurement of pH, dissolved oxygen (DO) and conductivity for food and beverage, pharmaceutical and other demanding markets.

With decades of experience in glass technology and analyzer development SI Analytics is able to offer high quality products combined with expertise and know-how that you won’t find anywhere else.

SI Analytics is a Xylem Brand and leader in electrochemical laboratory equipment. Xylem Analytics is a leading provider of premium field, portable, on-line and laboratory analytical instrumentation serving water & wastewater, ocean/coastal, food & beverage, environmental, chemical and pharmaceutical markets through brands including (but not limited to) SI Analytics, WTW, YSI, OI Analytical, and ebro.

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