Starter Electrode Ohaus ST272 Puncture pH Electrode

Starter Electrode Ohaus ST272 Puncture pH Electrode

The Starter Electrode Ohaus ST272 Puncture pH Electrode is a robust and efficient electrode designed for pH measurement in semi-solid and soft materials, including food, soil, and gels. Its plastic shaft construction provides enhanced durability and resistance to breakage, making it ideal for fieldwork and frequent laboratory use. Engineered for reliability, it ensures accurate and stable readings when used with Ohaus Starter and AquaSearcher pH meters.

Key Features

The ST272 electrode features a measurement range of 2.00 to 12.00 pH, making it perfect for testing a wide variety of samples such as meat, cheese, dough, fruits, and soil. Its puncture-style tip allows direct insertion into solid and semi-solid samples, eliminating the need for pre-dilution or sample preparation. Because it is made of durable plastic, the electrode offers improved mechanical strength compared to glass models, while still maintaining high chemical stability.

Additionally, the 1-meter cable provides sufficient flexibility during use, and its longer shaft (160 mm × 15 mm) accommodates deeper sample penetration when required. Although it does not include an internal temperature sensor, it performs consistently within a temperature range of 0°C to 50°C, ensuring dependable measurements across typical laboratory and field environments.

Technical Specifications

• Model: Ohaus Starter ST272 Puncture pH Electrode

• Electrode Type: pH

• Measurement Range: 2.00 – 12.00 pH

• Temperature Range: 0°C – 50°C

• Shaft Material: Plastic

• Cable Length: 1 m

• Dimensions (L × Ø): 160 mm × 15 mm (6.3 in × 0.59 in)

• Temperature Sensor: None

• Net Weight: 95 g (3.35 oz)

• Working Environment: 10°C – 40°C, 85% RH, non-condensing

• Compatible Meters: AB33M1, FB2200, ST5000i, AB41PH, ST5000, ST2200, ST300, ST400, AB33PH, AB23PH

Applications

The ST272 electrode is specially designed for food safety, agricultural testing, and quality control applications. It allows users to measure pH directly in semi-solid and viscous materials, which is particularly useful for testing meat, dairy products, fruits, and soil samples. As a result, it is widely used in laboratories, food-processing industries, and field research where precision and practicality are equally important.