A digital benchtop pH meter is a laboratory instrument designed to accurately measure the pH value of liquid samples. Compared with portable or pen-type pH tester, benchtop model generally offers higher accuracy, and better stability. Benchtop digital pH meter often used in laboratory, research institution, food processing, and environmental testing.

A Large LCD Screen

Benchtop Digital pH Meter WIth Adjustable Probe Holder
SISCO's pH meter is widely used across many industries to measure the acidity or alkalinity of liquids accurately. In laboratories, it supports chemical analysis and research experiments. In agriculture, it helps monitor irrigation water quality for optimal crop growth. In the food and beverage industry, it ensures quality control for products such as dairy, wine, beverages, and processed foods.
| Model | SISCO-PHM-PH100 | |
| pH | Range | (-2.00~20.00) pH |
| Resolution | 0.01 / 0.1 pH | |
| Accuracy | ±0.01 pH ±1 digit | |
| mV (ORP probe optional) | Range | -1,999 mV~+1,999 mV |
| Resolution | ±0.1 / 1mV | |
| Accuracy | ±0.1% FS ± 1 digit | |
| Temperature | Range | 0~100.0 °C (32.0~212.0 ℉) |
| Resolution | 0.1 ℃ | |
| Accuracy | ±0.5 ℃ ± 1 digit | |
| Data Storage | 450 groups | |
| Power Supply | DC 12V | |
| Weight | About 2.5kg | |
| Data Output | 1. USB to Flash Disk 2. Wireless connection to printer (the printer is optional) |
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| Packing Including | 1. Meter× 1 2. Plastic pH electrode 201T× 1 3. pH buffer solution: 4.00/ 7.00/ 10.01, 50mL, one for each 4. Electrode holder × 1 5. Power adaptor × 1 |
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A1: What is a pH meter?
Q1: A pH meter is an electronic instrument used to measure the acidity or alkalinity of a liquid. The device typically consists of an electrode and a digital display. When the probe is placed in a solution, it detects hydrogen ion activity and converts it into a pH reading.
A2: What is the typical pH range a pH meter can measure?
Q2: A typical pH tester can measure a pH range from 0 to 14, which covers the full scale from highly acidic to highly alkaline solutions. Most standard laboratory and portable pH meters are designed within this range. Some benchtop models can measure pH values ranging from -2 to 20.
A3: What causes unstable pH readings?
Q3: Unstable pH readings are usually caused by electrode problems, temperature changes, or contamination. A dirty or clogged glass electrode slows response and causes drift. Improperly stored electrodes lose sensitivity. Temperature fluctuations affect the electrochemical reaction, so readings vary if temperature compensation is not used. Air bubbles on the electrode surface can interfere with measurement.
Tips: What safety precautions should be taken when using a digital benchtop pH meter?
When using a benchtop digital pH meter, always wear appropriate personal protective equipment such as gloves, safety goggles, and a lab coat, especially when handling acidic or alkaline solutions. Ensure the meter is placed on a stable, dry surface away from the edge of the bench to prevent spills or damage. Rinse the electrode with distilled water between samples to prevent contamination. Store the electrode in proper storage solution and disconnect power before cleaning or maintenance.
Thank you for buying industrial test and measurement equipment on SISCO.com, all products sold by SISCO and the partner cover a 12 months warranty, effective from the date of receiving the products.
SISCO is responsible for providing free spare parts, and free technical support to assist the customer to repair the defective products until the problem is solved.