| instrument identity |
| model | VIKING-PH500T |
| product number (SKU) | PRO5980 |
| brand / line | COLO.Science · COLO Lab Experts |
| instrument type | Benchtop pH / ORP / Temperature meter with pure water kit |
| intended use | High‑accuracy pH, ORP and temperature measurements, specifically optimized for pure water samples, as well as research, QC, education and environmental labs. |
| pH measurement |
| pH range | -2.0 to 16.0 pH |
| resolution | selectable 0.1 / 0.01 / 0.001 pH |
| accuracy | ±0.01 pH |
| calibration points | up to 6 (1‑6 points) |
| buffer groups | DIN, NIST, USA, MERK, JIS, GB (customizable) |
| standard recognition | automatic, with user-defined buffers possible |
| electrode diagnostics | slope & offset display, calibration reminder |
| mV / ORP measurement |
| mV range | 0 to 2000 mV |
| resolution | 1 mV |
| accuracy | ±1 mV |
| ORP mode | EH ORP Mode (relative mV), 1 custom point calibration |
| temperature measurement |
| temperature range | -5 to 105 °C (23 to 221 °F) |
| unit | °C, °F |
| resolution | 0.1 ° |
| accuracy | ±0.3 °C |
| measurement workflow & data |
| reading modes | Auto‑Read (Fast/Medium/Slow), Timed, Continuous |
| reading prompts | Reading, Stable, Locked |
| temperature compensation | ATC, MTC |
| data storage | 1000 data sets per parameter (GLP‑compliant) |
| data analysis | review, compare, recalc |
| log management | Yes |
| reset | factory reset |
| inputs, display & protection |
| pH electrode input | BNC (Q9) |
| temperature probe input | 4‑pin aviation connector |
| display | 7.0″ color high‑contrast LCD touchscreen (optional 4.3″ segmented LCD), backlight |
| auto shutdown | 1‑60 min programmable, or off |
| IP rating | IP54 |
| outputs | USB (flash memory, PC, scanner), RS‑232 (printer, auto-sampler) |
| power & physical |
| power | AC Adapter, 100–240 V AC input, DC 24 V output |
| dimensions | 227 × 147 × 70 mm |
| weight | 630 g (2.09 lb) |
| topic | recommendation | note |
| calibration |
Use 3‑6 points for critical work; monitor slope (95‑105%) |
Automatic buffer recognition; recalibrate daily for highest precision |
| temperature |
Always use ATC probe for accurate pH; for MTC, measure sample temperature separately |
ATC range: -5…105°C |
| pure water measurement |
Use the included TRIS electrode and follow special procedures for low ionic strength samples |
Ensures stability and accuracy in pure water |
| electrode care |
Rinse with distilled water; store in 3 M KCl; clean periodically |
Prevents drift and prolongs life |
| data export |
Use USB flash drive for quick transfer; RS‑232 for printer or PC |
GLP‑compliant reports |
📄 reference PDF: VIKING-PH500T.pdf
🧪 application guidance: workflow‑based electrode & buffer selection
🛠️ maintenance: electrode cleaning & periodic inspection
🧾 procurement: binding spec = quotation package