201-C pH electrode, BNC connection

The Apera Instruments 201-C pH electrode is a general-purpose pH sensor designed for accurate pH measurement in standard aqueous solutions used in scientific research, environmental testing, and quality control.

Equipped with a high-quality pH glass membrane and maintenance-free KCl gel electrolyte, the 201-C offers reliable performance in a wide range of laboratory and field applications. The removable cap helps maintain electrode hydration and extends its lifespan.

Key Features

• High-quality pH glass electrode for accurate measurements
• KCl gel electrolyte for maintenance-free operation
• Removable cap preserves moisture when not in use
• Compatible with all BNC pH meters
• No built-in temperature sensor — use external probe for ATC
• Not suitable for low-ion, strongly basic, corrosive, or high-temp (>60°C) solutions
• 6-month manufacturer’s warranty

Set Contents

• 201-C pH Electrode
• Protective storage cap
• User instructions