Standard Test Method for Measuring Apparent pH of Water Insoluble Phenol-Formaldehyde Resins1 This standard is issued under the fixed designation…
![Astm D 4613 – 86 (Reapproved 1996) Pdf free download](https://civileng.co/wp-content/uploads/2021/03/Astm-D-4613-–-86-Reapproved-1996-Pdf-free-download.png)
Standard Test Method for Measuring Apparent pH of Water Insoluble Phenol-Formaldehyde Resins1 This standard is issued under the fixed designation…