Parker Eclipse vs TheraSonic: Which Ultrasound Gel?
By Physiotherapy & Electrotherapy Equipment | Balego | Published: 2026-10-30
Category: Buying Guides
Compare Parker Eclipse probe covers with TheraSonic ultrasound gel to find the best coupling medium for your therapeutic or diagnostic needs.
Quick answer
Choose TheraSonic Ultrasound Gel for direct skin coupling in therapeutic, Doppler, or diagnostic procedures. Choose Parker Eclipse probe covers when you need a pre-gelled, disposable cover for endocavity probes to reduce cleanup and maintain hygiene.
How they differ in use
TheraSonic is a water-soluble, viscous gel that stays in constant contact with the skin during ultrasound procedures. It works across a wide range of medical ultrasound frequencies and is ideal for therapeutic ultrasound, Doppler, and fetal Doppler monitoring.
Parker Eclipse probe covers are soft, disposable, and latex-free. Each cover is pre-gelled internally with Aquasonic 100 Ultrasound Transmission Gel, so you get both a barrier and a coupling medium in one step. This design minimizes trapped air and speeds up probe preparation, especially for endocavity transducers.
When to pick one over the other
If you perform routine skin-surface ultrasound (therapeutic or diagnostic) and need a simple, cost-effective gel, TheraSonic is the straightforward choice. It comes in multiple sizes from 2 oz to 5 liters, so you can match the volume to your practice.
If you work with endocavity probes (e.g., transvaginal or transrectal) or need to change covers frequently between patients, Parker Eclipse saves time and reduces cross-contamination risk. The pre-gelled interior means you don't need to apply gel separately inside the cover.
Trade-offs at a glance
- Application type: TheraSonic is best for surface ultrasound (therapeutic, Doppler, diagnostic). Parker Eclipse is designed for endocavity probes where a disposable barrier is needed.
- Setup speed: Parker Eclipse saves time because the cover comes pre-gelled. TheraSonic requires manual gel application but allows you to control the amount and spread.
- Cost per use: TheraSonic is more economical per application, especially in larger volumes. Parker Eclipse costs more per use but includes both the cover and gel, reducing waste and cleanup.
- Hygiene & infection control: Parker Eclipse offers a disposable barrier for each patient, ideal for infection-prone environments. TheraSonic is a single-patient gel bottle but does not provide a physical barrier.
Product facts at a glance
- TheraSonic Ultrasound Gel — 2 oz, 8 oz, 16 oz & 5 Liter: TheraSonic Ultrasound Gel is a water-soluble, viscous coupling medium for therapeutic, Doppler, and diagnostic procedures. It keeps the transducer in constant contact with the skin across a wide frequency range, making it a versatile choice for most ultrasound applications.
TheraSonic Ultrasound Gel — 2 oz, 8 oz, 16 oz & 5 Liter - Parker Eclipse® Ultrasound Probe Covers | 38-01 & 38-03 3D/4D: Parker Eclipse probe covers are soft, disposable, latex-free covers pre-gelled internally with Aquasonic 100 Ultrasound Transmission Gel. The pre-gelled interior streamlines probe preparation and minimizes trapped air, which is especially helpful for endocavity transducers in high-turnover settings.
Parker Eclipse® Ultrasound Probe Covers | 38-01 & 38-03 3D/4D
Which one fits your practice?
Best for
- TheraSonic: Clinics performing routine surface ultrasound who want a cost-effective, versatile gel in bulk sizes.
- Parker Eclipse: Practices using endocavity probes that need quick, hygienic, pre-gelled disposable covers.
Not ideal for
- TheraSonic: Endocavity procedures where a disposable barrier is required.
- Parker Eclipse: High-volume surface ultrasound where the per-use cost of covers adds up quickly.
