COLO.Science · Technical Specification
VIKING-PH400
Benchtop pH Meter · pH / mV / Temperature · 5.7″ LCD · IP54
Reliable benchtop pH meter for routine measurements with 5.7″ high‑resolution LCD,
Auto‑Read / Timed / Continuous modes, Auto‑Hold endpoint detection,
ATC/MTC temperature compensation and 1–5 point pH calibration
with standard buffer recognition (NIST, DIN, GB, USA).
pH / mV / °C
5.7″ LCD
Auto‑Read
Auto‑Hold
ATC / MTC
5‑point calibration
IP54
Document type: Technical Specification Sheet
Format: Landscape (Word/Outlook-ready)
Format: Landscape (Word/Outlook-ready)
Instrument
VIKING-PH400 · COLO.Science
Address (HQ)
Polje ob Sotli 4
SI-3255, Slovenia
SI-3255, Slovenia
Contact
VIKING-PH400 · Technical Specification
Document ID: COL-TEC-VIKING-PH400-EN
Version: Landscape
Informational technical sheet · Non-binding · Controlled electronic document
Version: Landscape
Informational technical sheet · Non-binding · Controlled electronic document
VIKING-PH400 · benchtop pH meter technical specification sheet
pH -2.00 → 20.00
mV -2000.0 → 2000.0
Temp -5 → 110°C
0.01 pH resolution
IP54
— Routine pH / mV / temperature workflows
📋 general & performance specifications
| instrument identity | |
|---|---|
| model | VIKING-PH400 |
| product number (SKU) | PRO6085 |
| brand / line | COLO.Science · COLO Lab Experts |
| instrument type | Benchtop pH / mV / Temperature meter |
| intended use | Routine pH and mV measurements with temperature compensation in research, QC, education and environmental labs. |
| pH measurement | |
| pH range | -2.00 to 20.00 pH |
| resolution | selectable 0.1 / 0.01 pH |
| accuracy | ±0.01 pH |
| calibration points | up to 5 (1‑5 points) |
| buffer groups | NIST, GB, USA, DIN (customizable) |
| standard recognition | automatic, with user-defined buffers possible |
| electrode diagnostics | slope & offset display |
| mV measurement | |
| mV range | -2000.0 to 2000.0 mV |
| resolution | 0.1 mV |
| accuracy | ±0.3 mV or ±0.1% FS |
| temperature measurement | |
| temperature range | -5 to 110 °C / 23 to 230 °F |
| unit | °C, °F |
| resolution | 0.1 ° |
| accuracy | ±0.2 °C |
| measurement workflow & data | |
| reading modes | Auto‑Read (Fast/Medium/Slow), Timed, Continuous |
| reading prompts | Reading, Stable, Locked |
| endpoint function | Auto‑Hold (senses and locks measurement endpoint) |
| temperature compensation | ATC, MTC |
| data storage | 500 data sets (GLP‑compliant) |
| reset | factory reset |
| inputs, display & protection | |
| pH electrode input | BNC (Q9) |
| temperature probe input | 4‑pin aviation connector |
| display | 5.7″ high‑resolution LCD with backlight |
| auto shutdown | 1‑60 min programmable, or off |
| IP rating | IP54 |
| outputs | USB (PC), RS‑232 (printer) |
| power & physical | |
| power | AC Adapter, 100–240 V AC input, DC 9 V output |
| dimensions | 242 × 195 × 68 mm |
| weight | 900 g (1.98 lb) |
⚙️ key instrument features
| 5.7″ high‑resolution LCD | Clear display with backlight for easy reading. |
| Multi‑point calibration (1‑5) | NIST/GB/USA/DIN buffers + custom; slope & offset display. |
| Flexible reading modes | Auto‑Read, Timed, Continuous with Auto‑Hold endpoint detection. |
| GLP data management | 500 sets with logging, review, export via USB/RS‑232. |
| Electrode diagnostics | Slope and offset display for condition monitoring. |
| USB & RS‑232 | Connect to PC or printer for data export. |
| IP54 | Splash protection for wet‑bench use. |
🧪 typical laboratory applications
| routine water quality analysis (pH with temperature compensation) |
| education and training labs (electrochemistry basics) |
| food & beverage QC (pH of raw materials and finished products) |
| general ORP / redox measurements using mV mode |
| buffer preparation and routine pH verification |
| environmental monitoring and field sample analysis (lab-based) |
📦 included / typical delivery (reference)
- VIKING-PH400 benchtop pH meter
- E-301-QC 3‑in‑1 pH composite electrode
- NIST pH standard solutions: 4.01 / 7.00 / 10.01 (50 mL each)
- COLO‑5 electrode stand
- AC adapter (100–240 V input, 9 V output)
🧩 options & notes
| buffers & accessories | Full range of NIST/DIN/USA/GB buffers, storage solutions, cleaning kits available. |
| electrode selection | Choose from COLO’s wide portfolio for specific sample types (aqueous, viscous, high solids, etc.). |
| connectivity | Optional data transfer software for PC connection (RS‑232 / USB). |
| calibration practice | Use fresh buffers and maintain temperature consistency for best accuracy. |
🔬 practical operation notes
| topic | recommendation | note |
|---|---|---|
| calibration | Use 2‑5 points for critical work; verify slope/offset trend over time | NIST/GB/USA/DIN buffer recognition supported; keep buffers uncontaminated |
| temperature | Use ATC when available; otherwise keep sample and buffers at similar temperature | ATC/MTC supported |
| electrode care | Rinse between samples; store electrode properly after use | Maintenance directly impacts stability and drift |
| data export | Use USB or RS‑232 for printing or PC transfer | GLP‑compliant reports |
📄 reference PDF: VIKING-PH400.pdf
🧪 application guidance: workflow‑based electrode & buffer selection
🛠️ maintenance: electrode cleaning & periodic inspection
🧾 procurement: binding spec = quotation package
📌 Contact & Support
Headquarters address
Polje ob Sotli 4
SI-3255, Slovenia
Application guidance: tell us your sample type and throughput (routine QC, education, field transfer).
We will propose the matching instrument configuration and electrodes for your workflow.
We will propose the matching instrument configuration and electrodes for your workflow.
Quick contact
Web:
colo.si
PDF Tech Spec:
VIKING-PH400.pdf
Email:
sales@colo.si
Phone:
+386 64 222 724
Knowledge hub:
COLO.Science
Manufacturer & configuration notice (important):
Specifications in this document are provided for general reference and may represent a typical configuration. COLO reserves the right to change technical specifications without notice.
For procurement and tender purposes, the only valid and binding specification is the official COLO quotation and the accompanying technical specification that is engineering-approved.
Specifications in this document are provided for general reference and may represent a typical configuration. COLO reserves the right to change technical specifications without notice.
For procurement and tender purposes, the only valid and binding specification is the official COLO quotation and the accompanying technical specification that is engineering-approved.