|
US$339.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
LY/T 1283-2011: Method of laboratory test for toxicity of wood preservatives to decay fungi
Status: Valid LY/T 1283: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| LY/T 1283-2011 | English | 339 |
Add to Cart
|
3 days [Need to translate]
|
Method of laboratory test for toxicity of wood preservatives to decay fungi
| Valid |
LY/T 1283-2011
|
| LY/T 1283-1998 | English | 359 |
Add to Cart
|
3 days [Need to translate]
|
Method of laboratory test for toxicity of wood preservatives to decay fungi
| Obsolete |
LY/T 1283-1998
|
PDF similar to LY/T 1283-2011
Basic data | Standard ID | LY/T 1283-2011 (LY/T1283-2011) | | Description (Translated English) | Method of laboratory test for toxicity of wood preservatives to decay fungi | | Sector / Industry | Forestry Industry Standard (Recommended) | | Classification of Chinese Standard | B60 | | Classification of International Standard | 79.020 | | Word Count Estimation | 13,125 | | Date of Issue | 2011-06-10 | | Date of Implementation | 2011-07-01 | | Older Standard (superseded by this standard) | LY/T 1283-1998 | | Quoted Standard | GB/T 14091 | | Regulation (derived from) | State Forestry Administration in 2011 Notice No. 9 | | Issuing agency(ies) | State Forestry Administration | | Summary | This standard specifies the optimum laboratory conditions by measuring affected by preservative treated wood decay fungi infection resulting from loss of quality timber, determine the test preservatives can effectively prevent the corruption of the selected bacteria on the minimum amount of wood decay process (ie toxicity thresholds) approach. Use this method measured the toxicity limit this preservative preservative visible above the ground for (including access to) field test the minimum that should be achieved when the drug loading. | LY/T 1283-2011: Method of laboratory test for toxicity of wood preservatives to decay fungi---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 decay fungi
ICS 79.020
B60
People's Republic of China Forestry Industry Standard
Replacing LY/T 1283-1998
Wood preservative toxicity laboratory for decay fungi
experiment method
Published on.2011-06-10
2011-07-01 implementation
State Forestry Administration released
Content
Foreword III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Test equipment 1
5 sample and forage 2
5.1 Test material 2
5.2 Sample 2
5.3 Feeding wood 2
6 test bacteria 2
6.1 Brown rot fungus 2
6.2 White rot fungus 3
6.3 Other 3
7 Test step 3
7.1 Medium Preparation 3
7.2 Inoculation and cultivation of test bacteria 4
7.3 Sample Preparation and Preservative Infusion 4
7.4 Loss and Volatilization of Preservatives 5
7.5 Sterilization and inoculation of samples 5
7.6 Test of decay of sample 5
7.7 Weighing of the sample at the end of the test 5
8 result calculation 6
9 Assessment of the toxicity limit of preservatives 6
10 Re-measurement of toxicity limits 6
11 Report 6
Appendix A (informative) The average mass loss rate of the sapwood of different control species of wood by different strains 7
Appendix B (informative appendix) Average quality loss rate of sapwood of five control species in foreign countries through different strains
Appendix C (informative) Wood Preservative Toxicity Laboratory Test Record for Toxic Fungus 9
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces LY/T 1283-1998 "Laboratory Test Method for Toxicity of Wood Preservatives to Decaying Fungi", and LY/T 1283-1998
In comparison, the main technical changes are as follows.
--- The scope is specified in detail.
--- Cancel the restrictions on "wood" in terms and definitions, and modify the "preservative retention" to "preservative loading".
--- Modify the maltose concentration unit and replace the Baume unit with g/L.
--- Delete the "coniferous material sample for brown rot fungus test, hardwood sample for white rot fungus test" provisions, changed to "new preservatives at least
A brown rot fungus and a white rot fungus are tested for decay."
--- Increase the "in addition to the standard test bacteria, you can also use other strains that are more resistant to the control sample".
--- Add at the end of the decay test "After 12 weeks of decay, start investigating the control sample without drug treatment, only the quality of the control sample
Only when the loss rate meets the requirements, the other drug treatment samples can be taken out. Generally, the longest time can be extended to 18 weeks. If 18 weeks
When the quality loss rate is not up to the requirement, it is recommended to change other strains or reference materials and find out if there is any problem in the experiment.
Provisions.
--- Increase the "average mass loss rate of sapwood of different control tree species by different strains".
This standard is proposed and managed by the National Timber Standardization Technical Committee (SAC/TC41).
This standard is drafted by. Institute of Wood Industry, Chinese Academy of Forestry.
Participated in the drafting of this standard. Nanjing Forestry University, Guangdong Academy of Forestry.
The main drafters of this standard. Ma Xingxia, Jin Zhongwei, Jiang Mingliang, He Xuexiang.
The previous versions of the standards replaced by this standard are.
---LY/T 1283-1998.
Wood preservative toxicity laboratory for decay fungi
experiment method
1 Scope
This standard specifies the wood caused by the infection of preservative-treated wood by decaying bacteria under the most suitable laboratory conditions.
Material quality loss, determine the preservative tested to effectively prevent the selected amount of decaying bacteria from decaying the treated wood (ie toxic
Method of limit). The toxicity limit of this preservative measured by this method can be regarded as the preservative above the ground (including contact with the ground)
The minimum drug loading that should be achieved in field trials.
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 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 Incubation chamber or constant temperature and humidity incubator. temperature 28 °C ± 2 °C, relative humidity 75% ~ 85%.
4.2 Blast drying oven. temperature 103 °C ± 2 °C.
4.3 Steam sterilizer. pressure 0.25MPa, temperature 138 °C.
4.4 Sterile inoculation room or ultra clean bench.
4.5 Analytical balance. accuracy 0.01g.
4.6 Vacuum pump. Relative vacuum -0.09MPa.
4.7 Petri dish. glass, 6cm or 9cm in diameter.
4.8 Culture flask. 500mL wide-mouth glass conical flask or wide-mouth round cap bottle with screw cap and filter hole (minimum volume 250mL, minimum diameter)
32mm, screw cap can be sterilized).
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of LY/T 1283-2011_English be delivered?Answer: Upon your order, we will start to translate LY/T 1283-2011_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of LY/T 1283-2011_English with my colleagues?Answer: Yes. The purchased PDF of LY/T 1283-2011_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay. Question 5: Should I purchase the latest version LY/T 1283-2011?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version LY/T 1283-2011 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.
|