VIKING-PH400 Laboratory pH / mV Meter
OVERVIEW
The VIKING-PH400 laboratory pH / mV meter is a high-precision benchtop instrument with
±0.002 pH accuracy, 0.001 pH resolution and 1–5-point calibration with automatic standard
recognition. It combines ATC/MTC temperature compensation, multi-reading modes
(auto-read, timed, continuous) and GLP-compliant data storage for up to 500 results.
With a 7.0″ high-resolution LCD with backlight, support for multiple buffer groups (NIST, DIN, GB, USA,
MERCK, GOST) and ±2000 mV ORP range, VIKING-PH400 is an ideal platform for COLO.Science
workflows in water and wastewater laboratories, food & beverage QC, pharma/biotech and education.
COLO.SCIENCE KNOWLEDGE
Best practice for laboratory pH and ORP measurement
Explore COLO.Science articles on pH theory, buffer selection, electrode care, ORP measurement
and GLP-compliant pH workflows in water, food and pharmaceutical laboratories.
TYPICAL APPLICATIONS
- Water & wastewater laboratories (drinking, process, effluent, environmental samples).
- Food & beverage quality control, dairy and agricultural applications.
- Pharma & biotech buffer preparation and process monitoring.
- Academic teaching laboratories and research labs.
MODEL & PARAMETERS
| Model | Measured parameters | Display |
|---|---|---|
| VIKING-PH400 | pH, mV (ORP), temperature; 1–5 point calibration with automatic standard recognition (NIST / DIN / GB / USA / MERCK / GOST); ATC / MTC; GLP memory for 500 data sets. |
7.0″ high-resolution LCD with backlight, multi-status prompts (Reading / Stable / Locked) |
TECHNICAL SPECIFICATIONS (EXCERPT)
Measurement ranges & performance
| pH | Range: −2.000 to 20.000 pH; resolution: 0.1 / 0.01 / 0.001 pH; accuracy: ±0.002 pH; up to 5 calibration points with automatic standard recognition; selectable buffer groups: NIST, DIN, GB, USA, MERCK, GOST. |
| mV (ORP) | Range: −2000.00 to 2000.00 mV; resolution: 0.1 / 0.01 mV; accuracy: ±0.1 mV or ±0.03%; suitable for ORP and redox measurements with status prompts (Reading / Stable / Locked). |
| Temperature | Range: −10.0 to 135.0 °C (14.0 to 275.0 °F); resolution: 0.1; accuracy: ±0.1 °C; ATC / MTC modes for accurate temperature compensation. |
| Measurement modes | Auto-read (Fast / Medium / Slow), Timed and Continuous; auto-hold endpoint detection; prompts: Reading, Stable, Locked. |
| Memory & GLP | Data storage: up to 500 results (GLP-compliant); date & time stamp; data recall via display; supports QA documentation in regulated labs. |
| Inputs & outputs | pH electrode input: BNC (Q9); temperature probe input: 4-pin aviation connector; USB (PC) and RS-232 (printer / PC) interfaces. |
| Instrument & power | Backlight: yes; auto shutdown: 1–60 min or off; IP rating: IP54; power: AC adapter, 100–240 V AC input, 20 V DC output; instrument dimensions: 242 × 195 × 68 mm; net weight: 900 g; shipping weight: approx. 3 kg. |
For the complete specification table, please refer to the
VIKING-PH400 datasheet (PDF)
.
STANDARD DELIVERY
- Instrument VIKING-PH400
- 3-in-1 pH composite electrode
- Electrode stand (EHO-5)
- NIST pH buffer solutions 4.01 / 7.00 / 10.01 (50 mL each)
- AC adapter
- Quick start guide
Exact kit contents may vary by region and configuration; please refer to the current catalog and quotation
for final details.
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