D3772-15 – Standard Test Method Technical Guide

📜 Scope and Product Classification

This standard, designated ASTM D3772-15 (Reapproved 2021), establishes a uniform specification for industrial finger cots manufactured from either natural rubber latex (Type I) or synthetic nitrile polymer (Type II). The core objective is to ensure consistent dimensional and material performance across various manufacturing facilities and production lots. The specification standardizes the sizing system, defining five specific designations: Small, Medium, Large, Extra Large, and XXL. The standard explicitly states that SI units are the accepted unit system for all measurements. Furthermore, the development adhered strictly to the internationally recognized principles on standardization established by the WTO Technical Barriers to Trade (TBT) Committee, facilitating global harmonization.

The specification focuses strictly on material and performance criteria. Section 1 explicitly notes that it does not cover the safe usage of finger cots or specialized construction products. The user is responsible for establishing appropriate safety, health, and environmental practices and determining the applicability of regulatory limitations prior to use.

🛡 Material Compliance and Manufacturing Requirements

Section 5 of the standard governs the strict manufacturing criteria. Type I finger cots must be produced from latex conforming to ASTM D1076 (Specification for Rubber—Concentrated, Ammonia Stabilized, Creamed, and Centrifuged Natural Latex). Type II cots must be formulated from a synthetic nitrile compound that fully meets the performance requirements of this specification. All finished cots are required to be free of embedded grit, foreign particles, and harmful discoloration, though they may be supplied in transparent, opaque, or colored finishes.

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