Digital pH Meter Manufacturer,Supplier and Exporter in India
Product Code : EL-PM-2186
Jlab Export is a leading Digital pH Meter Manufacturer,and suppliers in India
With its slope control and recorder output, this bench meter shows students how a pH reading is built from the electrode signal. It reads 0 to 14.00 pH with 0.01 pH resolution, and 0 to ±1999 mV, on a 3½-digit LED display with auto polarity and decimal indication. A combination pH electrode, buffer tablets and an electrode stand come with it.
Specifications
| Display | 3½-digit LED, auto polarity and decimal indication |
| Range | 0–14.00 pH, 0 to ±1999 mV |
| Resolution | 0.01 pH, 1 mV |
| Accuracy | ±0.01 pH, ±1 mV |
| Temperature compensation | Manual, 0–100 °C; automatic with the temperature probe |
| Slope control | 80–120% |
| Recorder output | 0 to 10 mV per pH or per 100 mV, adjustable |
| Power | 230 V ±10% AC, 50 Hz; battery and mains versions available |
| Size | 275 x 175 x 76 mm |
| Supplied with | Combination pH electrode, temperature probe, buffer tablets and buffer bottles (4 and 7 pH), electrode stand, operation manual, dust cover |
| Minimum order quantity | 1 unit |
| Dispatch time | Usually 7–10 working days |
| Manufacturer | JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India |
Classroom Practicals with the pH Meter
Switching to the mV scale makes a good first lesson. Students read the electrode voltage in the pH 7 buffer and then in the pH 4 buffer, work out the change in mV per pH unit and compare it with the theoretical Nernst value. A low figure shows an ageing electrode, which explains why the slope control exists.
The meter then follows a strong acid and strong base titration. Students add base from a Burette to acid with Phenolphthalein indicator added, reading the pH after each portion. They note the pH at which the indicator turns pink and compare it with the steepest part of their plotted curve. Testing soil extracts against Soil pH Test Paper is a useful follow-up.
Frequently Asked Questions
How is the meter calibrated with the slope control?
Place the rinsed electrode in the pH 7 buffer and set the display to 7.00. Rinse it again, move it to the pH 4 buffer and set 4.00 with the slope control. Repeat both steps once, since each adjustment slightly affects the other.
How are the buffer tablets used?
Dissolve each tablet in distilled water to the volume printed on its pack and keep the solution in the buffer bottles supplied. Make fresh buffer when it turns cloudy or has been open for a long time, because old buffer gives a false calibration.
Do I set the temperature by hand?
Manual compensation covers 0 to 100 °C: measure the sample temperature and set it on the meter. With the temperature probe connected, compensation is automatic. Either way, it corrects the electrode response for temperature.
What is the recorder output for?
It gives a voltage that follows the reading, adjustable to 10 mV per pH or per 100 mV. Connected to a chart recorder or data logger, it traces a titration curve or shows how a reading drifts over time.
How does it compare with the Microprocessor pH Meter?
The Microprocessor pH Meter recognises buffers on its own, stores readings and prints them. This meter is set by hand with its slope control and has a recorder output, which suits teaching how calibration works.
Other pH and Electrochemistry Meters
- Digital pH Meter (auto temp, table and portable models)
- pH/mV/Temperature Meter (waterproof pocket tester)
- Digital Potentiometer
- Digital pH, Conductivity & Temperature Meter
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Last updated: 6 November 2026
