Product Description
Genuine Hanna replacement pH electrode designed for HI98100, HI98103, and HI98115 Checker pH meters. The HI1271 features a slim 8mm polypropylene body that easily fits into test tubes and small vessels, gel-filled electrolyte for maintenance-free operation, and simple screw-on installation for quick, hassle-free electrode replacement.
Key Features & Benefits
Universal compatibility – Fits HI98100, HI98103, and HI98115 Checker pH meters
Slim 8mm design – Tapered polypropylene body fits test tubes and small containers
Gel-filled electrolyte – Maintenance-free, no refilling required
Easy installation – Simple screw-on/screw-off replacement, no tools needed
Wide pH range – Measures 0 to 13 pH for versatile applications
Spherical tip – 3mm diameter glass bulb for fast response
Durable construction – Polypropylene body resists breakage
Genuine Hanna quality – Manufactured to exact specifications for optimal performance
Why Replace Your pH Electrode?
pH electrodes are consumable components that degrade over time due to:
Glass membrane aging and reduced sensitivity
Junction clogging from sample contamination
Electrolyte depletion affecting reference stability
Physical damage or coating buildup
Regular electrode replacement ensures accurate, reliable pH measurements and extends the life of your Checker pH meter. The HI1271 is engineered to deliver the same precision and performance as your original electrode.
Compatible Meters
The HI1271 pH electrode is the official replacement for:
HI98100: Checker® Plus pH Tester
HI98103: Checker® pH Tester
HI98115: GroLine Checker® pH Tester
Technical Design
Slim 8mm Polypropylene Body
The tapered 8mm diameter polypropylene body is specifically designed to fit into test tubes, vials, and other small-opening containers. This slim profile makes the HI1271 ideal for laboratory work, quality control testing, and applications where sample volumes are limited.
Gel-Filled Electrolyte (Viscolene)
The single junction reference cell uses viscolene gel electrolyte that never requires refilling. This maintenance-free design eliminates the hassle of electrolyte management and ensures consistent reference potential throughout the electrode's lifetime.
Spherical Glass Tip
The 3mm diameter spherical glass tip provides a large surface area for fast response times and is suitable for a wide variety of sample types, from clear liquids to slightly turbid solutions.
Open Junction Design
The open junction allows for good electrical contact with samples while minimizing clogging in most general-purpose applications.
Screw Cap Connector
The screw cap connector design ensures secure attachment to your Checker meter. Simply unscrew the old electrode and screw on the new HI1271—replacement takes seconds with no tools required.
Applications
Laboratory pH testing
Quality control and QA/QC
Environmental water testing
Educational laboratories
Small-volume sample testing
Test tube and vial measurements
Food and beverage testing
Aquaculture and hydroponics
General-purpose pH measurement
Technical Specifications
Specification
Detail
SKU
HI1271
Compatibility
HI98100, HI98103, HI98115 Checker pH meters
Measurement Range
0 to 13 pH
Reference Cell Type
Single, Ag/AgCl
Junction Type
Open junction
Type of Electrolyte
Viscolene gel (maintenance-free)
Tip / Shape
Spherical (diameter = 3 mm)
Body Material
Polypropylene, 8 mm diameter (tapered)
Max. Pressure
0.1 bar
Temperature Operating Range
0 to 50°C (32 to 122°F)
Connector Type
Screw cap
Recommended Use
General purpose, small containers, test tubes
Easy Replacement Process
Remove old electrode: Unscrew the old electrode from your Checker meter by turning counterclockwise
Prepare new electrode: Remove protective cap from new HI1271 electrode
Install new electrode: Screw the HI1271 onto your meter by turning clockwise until snug
Condition electrode: Soak in storage solution for at least 30 minutes before first use
Calibrate meter: Perform a fresh calibration with your meter using standard buffer solutions
Electrode Care & Maintenance Tips
Storage: Always store electrode in pH storage solution (HI70300) to keep the glass membrane hydrated
Cleaning: Clean regularly with appropriate electrode cleaning solution (HI700601) to remove buildup
Rinsing: Rinse with distilled or deionized water between samples to prevent cross-contamination
Handling: Avoid touching the glass bulb and junction area to prevent contamination
Calibration: Calibrate your meter regularly using fresh buffer solutions for optimal accuracy
Replacement timing: Replace electrode when response time becomes slow, readings drift, or calibration fails
When to Replace Your Electrode
Consider replacing your HI1271 electrode when you notice:
Slow response time (readings take longer to stabilize)
Drifting readings or inability to hold calibration
Erratic or inconsistent measurements
Calibration errors or failure to calibrate
Visible damage to glass bulb or body
Coating or buildup that won't clean off
Recommended Accessories
HI70300: Storage solution for pH electrodes (essential for electrode longevity)
HI700601: General-purpose electrode cleaning solution
HI70004P: pH 4.01 buffer solution for calibration
HI70007P: pH 7.01 buffer solution for calibration
HI70010P: pH 10.01 buffer solution for calibration
Why Choose Genuine Hanna Electrodes?
Genuine Hanna Instruments electrodes are manufactured to exacting quality standards and are specifically engineered for compatibility with your Hanna meter. Using authentic replacement electrodes ensures:
Optimal performance: Designed to exact specifications for your meter
Accurate measurements: Quality-controlled manufacturing ensures reliable results
Perfect fit: Guaranteed compatibility with HI98100, HI98103, and HI98115 meters
Longevity: High-quality materials and construction for extended electrode life
Warranty protection: Using genuine parts maintains your meter's warranty coverage
Generic or third-party electrodes may not meet Hanna's quality standards and can result in inaccurate readings, poor performance, or damage to your meter.
What's Included
HI1271 pH electrode with screw cap connector
Protective cap
Note: Storage solution and cleaning solutions sold separately. We recommend HI70300 storage solution for optimal electrode maintenance.
Quality Assurance
Each HI1271 electrode undergoes rigorous quality control testing before shipment to ensure it meets Hanna Instruments' exacting standards for accuracy, reliability, and longevity. With over 40 years of experience in analytical instrumentation, Hanna delivers the quality you can trust.
