ISO 24329:2022 PDF

Scope: This document provides specifications for natural rubber latex concentrate which has low protein content [low protein natural rubber (LPNR) latex], as follows: — LPNR latex: field latex or concentrated latex pretreated with deproteinising agent, centrifuged and preserved after concentration with ammonia only, with an alkalinity of at least a mass fraction of 0,6 % calculated with respect to the latex. This document is applicable to medical rubber products and avoids the possibility of allergies. This document covers requirements for LPNR latex, type HA (high ammonia), and LPNR latex, type LA (low ammonia).

ISO 24329:2022 Referenced Document

ISO 123 Rubber latex - Sampling
ISO 124 Latex, rubber - Determination of total solids content
ISO 125 Natural rubber latex concentrate — Determination of alkalinity
ISO 126 Natural rubber latex concentrate - Determination of dry rubber content
ISO 127 Rubber, natural latex concentrate - Determination of KOH number
ISO 2005 Rubber latex, natural, concentrate - Determination of sludge content
ISO 35 Natural rubber latex concentrate — Determination of mechanical stability AMENDMENT 1: Precision data
ISO 506 Rubber latex, natural, concentrate — Determination of volatile fatty acid number
ISO 706 Rubber latex - Determination of coagulum content (sieve residue)
ISO 7780 Rubber and rubber latices - Determination of manganese content - Sodium periodate photometric methods
ISO 8053 Rubber and latex - Determination of copper content - Photometric method

2022 ISO 24329:2022 Low-protein natural rubber latex concentrate — Specification