LY/T 1284-2012 English PDF

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LY/T 1284-2012: Method of laboratory test for toxicity of wood preservatives to soft-rot fungus
Status: Valid

LY/T 1284: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
LY/T 1284-2012	259	Add to Cart	3 days	Method of laboratory test for toxicity of wood preservatives to soft-rot fungus	Valid
LY/T 1284-1998	359	Add to Cart	3 days	Method of laboratory test for toxicity of wood preservatives to soft-rot fungus	Obsolete

Similar standards

LY/T 2407   GB/T 30762   LY/T 1650   LY/T 2794   LY/T 1788   LY/T 1283   

Basic data

Standard ID: LY/T 1284-2012 (LY/T1284-2012)
Description (Translated English): Method of laboratory test for toxicity of wood preservatives to soft-rot fungus
Sector / Industry: Forestry Industry Standard (Recommended)
Classification of Chinese Standard: B60
Classification of International Standard: 79.020
Word Count Estimation: 10,136
Older Standard (superseded by this standard): LY/T 1284-1998
Quoted Standard: GB/T 13942.1; GB/T 14091
Regulation (derived from): State Forestry Administration Notice 2012 No. 5; industry standard filing Notice 2012 No. 4 (No. 148 overall)
Issuing agency(ies): State Forestry Administration
Summary: This standard specifies under laboratory conditions, by measuring the preservative treated wood by soft rot fungus infestation by wood resulting from mass loss, determined that the preservative toxicity test methods. This standard applies to the determina

LY/T 1284-2012: Method of laboratory test for toxicity of wood preservatives to soft-rot fungus

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Method of laboratory test for toxicity of wood preservatives to soft-rot fungus ICS 79.020 B60 People's Republic of China Forestry Industry Standard Replacing LY/T 1284-1998 Laboratory test method for toxicity of wood preservatives to soft rot fungi Published on.2012-02-23 2012-07-01 implementation State Forestry Administration released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. Please note that some of the contents of this document may involve patents. Publication of this document The organization is not responsible for identifying these patents. This standard replaces LY/T 1284-1998 "Laboratory Test Method for Toxicity of Wood Preservatives to Decaying Fungi". This standard and The main technical contents of LY/T 1284-1998 are as follows. --- Refer to GB/T 13942.1-2009 "Wood durability" Part 1. Laboratory test methods for natural corrosion resistance" A wide-mouth round cap bottle with a screw cap is available as an optional culture bottle (see 4.7). --- Modify the test period of the test bacteria infection culture "6 weeks" to "8 weeks." ---Modify "The oven temperature at the full dry mass of the sample before and after the test is (103 ± 2) °C" (see 7.5 and 7.12, version.1998) 8.5 and 8.11). This standard is proposed and managed by the National Timber Standardization Technical Committee (SAC/TC41). This standard was drafted. China National Academy of Forestry Research Institute of Wood Industry, National Wood-based Panel and Wood Bamboo Products Quality Supervision and Inspection Heart, Guangdong Academy of Forestry. The main drafters of this standard. Yang Zhong, Zhou Ming, Jiang Mingliang, Ma Xingxia, Lu Bin, Fu Yuejin, He Xuexiang. The previous versions of the standards replaced by this standard are as follows. ---LY/T 1284-1998. Laboratory test method for toxicity of wood preservatives to soft rot fungi

1 Scope

This standard specifies the quality loss of wood caused by the infection of wood treated with preservatives by soft rot fungi under laboratory conditions. Loss, a test method to determine the toxicity of the preservative. This standard applies to the determination of the toxicity limit of wood preservatives against soft rot fungi.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 13942.1 Wood durability - Part 1. Laboratory test methods for natural corrosion resistance GB/T 14091 wood anti-corrosion terminology

3 Terms and definitions

The following terms and definitions as defined in GB/T 14091 apply to this document. 3.1 Mass loss percentage weightlosspercentage Percentage loss of quality of wood treated with preservatives after infection by decaying bacteria in an indoor toxicity test. 3.2 Preservative retention The number of kilograms of active ingredient of the preservative absorbed per cubic meter of treated wood. 3.3 Preservative toxicity limit toxiclimitofpreservatives Preservatives effectively inhibit the minimum drug loading of decaying wood.

4 test equipment

4.1 Steam autoclave. design pressure 0.25MPa, design temperature 138 °C. 4.2 Vaccination room (box) or ultra-clean workbench. 4.3 Culture chamber or constant temperature and humidity incubator. temperature (30 ± 0.5) ° C, relative humidity 75% ~ 85%. 4.4 Air drying oven. temperature (103 ± 2) °C. 4.5 Analytical balance. The sensitivity is 0.001g. 4.6 Vacuum pump. Relative vacuum -0.09MPa. 4.7 Culture flask. 500mL wide-mouth triangular bottle or wide-mouth round cap bottle with screw cap (minimum volume 250mL, minimum diameter 32mm, thread The lid can be sterilized). 4.8 Preservative infusion sample device, see Figure 1. ......

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