Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
This page was published more than five years ago. Information on the page may be out of date.
CBPL methods do not include proprietary information such as ASTM Standards.
41-01
Test Method for pH of Leather (ASTM D 2810)
41-02
Test Method for Chromic Oxide in Leather (Perchloric Acid Oxidation) (ASTM D 2807)
41-03
Standard Guide for Reflected-Light Photomicrography (ASTM E 883)
You have been selected to participate in a brief survey about your experience today with CBP.gov.
