Table of Contents
Hollis Prism 2 CCR review, covering both device build parameters and testing feedback
In this article, we will delve into the world of the Hollis Prism 2 (P2) rebreather, exploring its features, benefits, and differences from other rebreathers we have reviewed before. We will pay special attention to both the construction of the device and testing reviews to give you a comprehensive overview of this rebreather, the questions asked by scuba divers. to the coach of the club “Daivings.lv”. Log in and try eCCR CE Rebreather with an instructor (Introduction to rebreather diving).
What is Hollis Prism 2?
The Hollis Prism 2 is a closed-cycle rebreather (CCR) manufactured by Hollis, one of the largest manufacturers of diving equipment in the world. This rebreather is known for its low work of breathing, light weight and simple design. It is CE certified for diving to 100 meters using trimix.
P2 main features
- Low work of breathing: The P2 is one of the rebreathers with the lowest work of breathing on the market (1.75 joules), which makes it easy to use and reduces fatigue.
- Light weight: The P2 is lightweight and compact, making it easy to transport and use. The fully assembled rebreather weighs only 25 kg, and without the cylinder – 13 kg.
- Simple design: The P2 has a simple and intuitive design that makes it easy to use and maintain.
- Radial scrubber: The P2 is the first rebreather in the series we reviewed to come standard with a radial scrubber, which provides longer operating time – 190 minutes when diving with air and 215 minutes when diving with trimix.
- Shearwater Electronics: The P2 uses Shearwater electronics, which are popular and reliable, providing precise oxygen level control and easy-to-read information.
- Modular design: The P2 has a modular design that allows it to be adapted to different needs. You can choose between different wings, straps and lungs.
- Durability: The P2 is made of durable materials such as stainless steel and high-quality plastic, ensuring its longevity.
Construction overview
P2 consists of several main parts:
- Head: Contains electronics, batteries, oxygen sensors and solenoid.
- Scrubber: Contains an absorbent that removes carbon dioxide from exhaled air. P2 uses a radial scrubber.
- Balloons: P2 uses two cylinders – one with diluent and one with oxygen.
- Regulators: Two regulators for diluate and oxygen supply.
- Hoses: Connect all parts of the rebreather.
- Wing and back plate: Provides buoyancy control and rebreather attachment to the diver.
- Contour lips: Serves as a gas reservoir. The P2 can use both front and rear contour lips.
- Loop: Connect the mouthpiece to the rebreather.
Testing reviews
The P2 has received positive reviews from divers, who praise it for its low work of breathing, light weight, and ease of use. Divers also note the rebreather's durability and reliability. Some divers have pointed to the length of the hoses and the plasticity of the body cover as areas for improvement.
Comparison with other rebreathers
- Work of breathing: P2 has a lower work of breathing than JJ CCR, SF2, and rEvo.
- Weight: The P2 is lighter than the JJ CCR and rEvo, but heavier than the SF2.
- Scrubber type: P2 uses a radial scrubber, while JJ CCR and SF2 use axial scrubbers.
- Electronics: The P2 uses Shearwater electronics, as do the JJ CCR and SF2.
- The price: The P2 is a relatively expensive rebreather, but offers good value for money.
Conclusions
The Hollis Prism 2 is a great rebreather that offers several advantages, including low breathing work, light weight, and a simple design. It is a good option for divers looking for a reliable and easy-to-use rebreather with a radial scrubber. If you are considering purchasing a rebreather, the P2 is definitely worth looking into.
