Thermo Scientific™ Orion™ ROSS Ultra™ pH Electrode with 1m cable

The Thermo Scientific™ Orion™ ROSS Ultra™ Flat Surface Combination pH Electrode is engineered for direct, accurate pH measurements of flat, soft, moist, semi-solid, or low-volume samples. With a flat sensing bulb and epoxy body design, this electrode is ideal for measuring pH on surfaces such as skin, agar plates, cheese, meat, textiles, paper, and other irregular or delicate materials.

Featuring the advanced ROSS™ reference system, it delivers unmatched measurement stability, drift resistance, and rapid response times, even in samples containing proteins, Tris buffers, enzymes, or organic solvents. The waterproof BNC connector ensures durability and compatibility with a wide range of pH meters, making this a trusted choice for laboratories conducting fieldwork, QC, food testing, or biomedical research.

Key Features and Benefits

• Flat Surface Design: Ideal for measuring surface pH of solids and semi-solids (e.g., food, gels, skin, textiles)
• ROSS™ Ultra Reference System: Delivers fast, stable, drift-free pH readings with unmatched accuracy
• Wide Chemical Compatibility: Performs reliably in challenging matrices such as Tris buffers, proteins, organic solvents, and heavy metals
• Waterproof BNC Connector: Durable, field-ready connector for universal compatibility
• Temperature Resilient: Operates across a wide range of 0°C to 100°C (32°F to 212°F)
• Refillable Design: Use with 3M KCl (Cat. No. 810007) for extended electrode life
• Epoxy Body Construction: Rugged and impact-resistant; suitable for field and bench environments
• 2-Year Warranty: Ensures long-term reliability and value

Specifications

Required Accessories & Compatible Solutions

• Filling Solution: 810007 – ROSS pH Electrode Fill Solution (5 × 60 mL)
• Storage Solution: 810001 – ROSS pH Electrode Storage Solution (475 mL)
• pH Buffers (NIST Traceable):
  • 910104 – pH 4.01, Red
  • 910107 – pH 7.00, Yellow
  • 910110 – pH 10.01, Blue
  • 910168 to 910112 – Full pH range buffers available
• Buffer Kit: 810199 – All-in-One ROSS pH Buffer and Maintenance Kit
• Cleaning Solutions: 900020 – Cleaning Solutions A–D Set

Applications

• Food Testing: Cheese, meat, and semi-solid pH analysis
• Cosmetic & Skin pH Measurement: Skin surface pH and dermatological formulations
• Microbiology & Cell Culture: Agar plate and moist surface pH control
• Pharmaceutical Quality Control: Semi-solid formulations and low-volume samples
• Field Research: Durable for portable testing in environmental or industrial settings

The Thermo Scientific™ Orion™ ROSS Ultra™ Flat Surface pH Electrode (8135BNUWP) is a high-precision tool tailored for unique pH measurement challenges. With its flat tip, refillable body, and robust ROSS reference system, it offers superior performance in demanding applications involving difficult samples. Ideal for food, cosmetic, pharmaceutical, and biological research laboratories, this electrode ensures accurate and stable pH readings—on any surface.