---
title: "ASTM D1413"
url: "https://mat-cs.com/astm-d1413/"
description: "This test method covers determination of the minimum amount of preservative that prevents decay of selected species of wood by selected fungi under optimum laboratory conditions."
---

ASTM Standard Withdrawn 2016

# ASTM D1413

Standard Test Method for Wood Preservatives by Laboratory Soil-Block Cultures

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## Significance and Use

This test method is useful in the development of new wood preservatives and preservative systems by evaluating the minimum preservative retention to prevent decay under laboratory conditions. The results are used to facilitate target retentions in subsequent tests for effectiveness against termites (see Test Method D 3345) and in field stakes (see Test Method D 1758). The sections on Treatment and Preservative Permanence are referenced by other ASTM standards. The test method assumes that the test blocks exposed to certain conditions after treatment will achieve equilibrium, and will return to the same equilibrium after exposure to fungi. This assumption may lead to weight loss that is not due to decay. The test uses live cultures of fungal organisms that require careful colonization, storage, and feeding to remain viable strains.

## Scope

1.1 This test method covers determination of the minimum amount of preservative that prevents decay of selected species of wood by selected fungi under optimum laboratory conditions.

1.2 The requirements for preparation of the material for testing and the test procedure appear in the following order:

Section Title

Section

Summary of Test Method

3

Significance and Use

4

Apparatus

5

Reagents

6

Wood and Test Blocks

7

Test Fungi

8

Culture Media

9

Preparation of Test Cultures

10

Preparation and Impregnation of Test Blocks

11

Conditioning Treated Blocks

12

Preservative Permanence

13

Stabilization of Treated Test Blocks and Placement in Culture Bottles

14

Incubation and Duration of Test

15

Handling Test Blocks After Exposure to Test Fungi

16

Calculation of Weight Losses

17

Evaluation of Test Results

18

Refining the Threshold

19

Report

20

Precision and Bias

21

Keywords

22

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.