Modification of a CO2 Absorbent Canister.

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Title: Modification of a CO2 Absorbent Canister.
Author: Edmonds, C; Quick, D
Abstract: The endurance of carbon dioxide absorbent canister in diving equipment utilizing pendulum gas flow can be extended by increasing the length of the canister. The "dead space" of the pendulum equipment can be reduced by utilizing circuit breathing tubes with unidirectional valves, without having to relinquish the more efficient pendulum flow through the carbon dioxide absorbent canister. These modifications allow for a more than 50% increase in endurance.
Description: Citation Status: Active; Citation Classification: Unclassified; Title Classification: Unclassified; Report Classification: Unclassified; Identifier Classification: Unclassified; Abstract Classification: Unclassified; Distribution Limitation(s): 01 - APPROVED FOR PUBLIC RELEASE; Information provided by the Royal Australian Navy ( is considered public information and may be distributed or copied unless otherwise specified. Use of appropriate byline/photo/image credits is requested.
Date: 1974

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