Description
Coleman Instruments Metrion IV 28C pH Meter Benchtop Analog 95-125V Lab
Benchtop analog pH and millivolt meter with large arc scale display. Measures pH 0–14 and mV readings with manual temperature compensation from 0–100 °C.
Specifications & What's Included
- Model: Metrion IV 28C
- Measurement: pH and mV (millivolts)
- Display: Analog meter movement with large arc scale
- pH Range: 0–14 pH direct read
- mV Range: mV Reading x100
- Temperature Compensation: Manual 0–100 °C knob
- Function Selector: Standby, pH, +MV, 0, -MV
- Power: 95–125V AC, 50–60 Hz, 10W
- Connectors: REF (+)MV, GLASS (-)MV, GND (rear panel)
- Includes: Power cord only. No probe or wires included.
Applications
Analog pH meters of this type were standard laboratory instruments for chemical analysis, water quality testing, and process control in manufacturing. The Metrion IV series gained wide adoption in educational institutions, research labs, and quality control departments throughout the mid-to-late 20th century. Compatible with standard laboratory pH probes and electrodes via the rear-panel connectors.
Condition: Used
This Coleman Instruments Metrion IV Model 28C benchtop pH meter has been inspected and appears to be in good used condition. It was pulled from a working lab environment where it was actively in use. The teal housing shows normal age-related wear — some scuffing and paint loss consistent with decades of lab use — and the front panel knobs and analog meter scale are intact and legible. The rear panel input terminals (REF, GLASS, GND) are present. A power cord is attached and visible in the photos. No probe or wires are included with this unit — it is the meter body only. Please view our photo set and contact us if you have any questions. Please note: We have multiple units in stock — yours may not be the one shown in the photos, however, it will be similar in condition and function.
This Coleman Instruments Metrion IV Model 28C benchtop pH meter has been inspected and appears to be in good used condition. It was pulled from a working lab environment where it was actively in use. The teal housing shows normal age-related wear — some scuffing and paint loss consistent with decades of lab use — and the front panel knobs and analog meter scale are intact and legible. The rear panel input terminals (REF, GLASS, GND) are present. A power cord is attached and visible in the photos. No probe or wires are included with this unit — it is the meter body only. Please view our photo set and contact us if you have any questions. Please note: We have multiple units in stock — yours may not be the one shown in the photos, however, it will be similar in condition and function.
Warranty Information
We stand behind every item we sell with a 30-day money-back guarantee. If your item arrives not as described, you may return it within 30 days for a full refund. Please inspect your purchase upon arrival and contact us with any questions.
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Additional Information
Brand: |
Coleman Instruments |
Model: |
28C |
MPN: |
28C |
Type: |
Benchtop Analog pH / mV Meter |
SKU: |
38948 |
Series: |
Metrion IV |
Patent Number: |
Pat. 2,828,466 |
Measurement Type: |
pH and mV (millivolts) |
Display Type: |
Analog meter movement — large arc scale |
pH Range: |
0–14 pH (read direct) |
mV Range: |
mV Reading x100 |
Temperature Compensation: |
Manual — 0 to 100 °C knob |
Function Selector: |
Standby, pH, +MV, 0, -MV |
Standardize Control: |
Yes — Increase/Standardize knob on front panel |
Input Connectors: |
REF (+)MV, GLASS (-)MV, GND (rear panel) |
Power Requirements: |
95–125V AC, 50–60 Hz, 10W |
Form Factor: |
Benchtop |
Probe Included: |
No — probe and wires not included |
Country/Region of Manufacture: |
United States |
Condition: |
Used – Pulled from Working Environment |
Seller Notes: |
No probe or wires included. Power cord present. Benchtop unit only. |
Condition Notes: |
Coleman Instruments Metrion IV 28C benchtop pH meter. Inspected, in good used condition. Pulled from a working lab environment. Housing shows normal age wear. Power cord present. No probe or wires included. |
