Hartmann Tunning Fork C 128

Clinical Application

The C 128 tuning fork is a standard diagnostic tool used in otology and general clinical practice. Its 128 Hz frequency is optimized for bedside hearing assessments—most commonly the Rinne and Weber tests—to help differentiate conductive versus sensorineural hearing loss. Outside of ENT, the instrument is also used to assess vibratory sensation during neurological examinations (e.g., peripheral neuropathy screening) and for basic bone-conduction checks.

Design & Configuration

The classic two-pronged design with a single stem provides a focused, sustained vibration when struck and a convenient contact point for placement against the mastoid, forehead, or other bony prominences. The C 128 pitch produces a low-frequency vibration that is long-lasting and easily perceived by patients, which improves reliability for comparative air- vs. bone-conduction testing. The stem geometry facilitates secure handling and controlled transfer of vibration with minimal damping from the clinician's fingers.

Instrument Specifications

• Instrument type: Diagnostic tuning fork
• Model / pitch: C 128 (128 Hz)
• Configuration: Two-pronged fork with stem for striking and placement
• Primary uses: Rinne and Weber tests, bone-conduction checks, vibratory sensation assessment
• Construction: Precision-forged stainless steel
• Reusable: Yes — designed for clinical reprocessing

Material & Construction

Manufactured from tempered stainless steel for consistent acoustic properties and durability. Prongs are balanced and polished to minimize corrosion and facilitate cleaning. The solid stem provides a reliable contact point for effective vibration transfer. The construction supports routine reprocessing protocols, including manual cleaning followed by standard sterilization practices as appropriate for reusable diagnostic instruments.

Quality & Compliance

Manufactured by FDA-registered OEM facilities and produced under strict quality control standards.

Brand Comparison

Comparable in form and function to equivalent instruments offered by major US medical suppliers.

Availability & Returns

• In-stock lead time: ships within ~1 week
• Out-of-stock lead time: 2–4 weeks
• Returns: 30-day return policy