Your search resulted in 832 documents. Displaying 25 entries per page.
Standardisation of sapstain tests - A challenge
1992 - IRG/WP 92-2403
In the last decade many new anti-sapstain products have been tested world-wide under laboratory and field conditions. Several extensive test programmes have been executed with different non-standardized test methods and procedures, with the result that the biological findings cannot be compared with each other. In this paper, gathered recommendations will be given in order to standardize test meth...
G Rustenburg, C J Klaver
A shower test protocol for measuring antisapstain wash-off from small individual log billets
1996 - IRG/WP 96-50069
According to New Zealand Timber Industry Federation statistics New Zealand exported 4,835,000 m³ of logs in 1994 and it is estimated that c. 20% were anti-sapstain treated. Loss of preservative from logs as a result of rain impact after application is of considerable concern both with respect to potential loss of efficacy and environmental contamination. Whilst Environment Canada have a proposed ...
A J Pendlebury, H Pearson
Programme section 2, Test methodology and assessment
1997 - IRG/WP 97-20126
IRG Secretariat
Wood preservatives: Field tests out of ground contact. Brief survey of principles and methodology
1976 - IRG/WP 269
This paper contains the following spots:
1.: The general need for field tests. 2.: Interests and limits of field tests in ground contact. 3.: Various methods in use for out-of-ground contact field tests. 4.: Fungal cellar tests are they an alternative to above-ground decay exposure tests? 5.: Conclusions....
M Fougerousse
Developments in the protection of wood and wood-based products
1980 - IRG/WP 340
Technology is playing an increasingly important role in the field of wood protection. This current review highlights how modern techniques have provided greater insight into the biological and physical processes affecting the durability of wood and wood-based products. Emphasis is also given to developments in preservative testing methodology and to the encouraging changes towards both the correct...
J M Baker
Studies on accelerated ageing procedures with TBTO-treated wood
1985 - IRG/WP 2244
The efficacy of various procedures for accelerated ageing of organotin based wood preservatives in treated wood has been investigated. It was found that leaching of the treated wood samples in water according to the European Standard EN 84 was not satisfactory for organotin based preservatives and is probably also unsuitable even for other types of organic solvent preservatives. Keeping tributylti...
J Jermer, M-L Edlund, B Henningsson, W Hintze
In search of alternative antisapstain chemicals for use in Papua New Guinea
1988 - IRG/WP 3472
The paper presents results of antisapstain field trials from three locations in Papua New Guinea as part of the Research Centre's programme to find suitable antisapstains to replace the hazardous sodium pentachlorophenate. Effectiveness of seven tested chemicals varied between indigenous pines (Araucaria cunninghamii, Araucaria husteinii) and white coloured hardwoods (Alstonia scholaris, ...
A Oteng-Amoako
Are fungal cellar tests really necessary?
1989 - IRG/WP 2333
During the past decade the range of methodology used to evaluate wood preservative potential has significantly expanded. At the forefront of these new tools available to the scientist·is the fungal cellar. This technique, as currently applied, involves the exposure of treated and untreated samples to conditions of moisture and temperature which ensure optimum fungal attack. By comparison data wit...
J N R Ruddick
Austrian field test method for anti-sapstain chemicals
1994 - IRG/WP 94-20020
Although Austria is a small country, the annual consumption of anti-sapstain products ranks to approximately 500 tons annually. In 1994, only three products will be approved by the Austrian Wood Preservation Committee (AWPEC). There is demand for a field test method, which demonstrates the efficacy of an anti-sapstain product and consequently implies the acceptance and approval of product by the A...
R Gründlinger, M Brandstätter, H Melzer, O Janotta
A direct basidiomycetes test methodology. Report on an EWPM ring test
1988 - IRG/WP 2306
Results of an EWPM-ring test using a direct basidiomycetes test methodology are reported. The test is caracterized by using big test blocks and infestation by infected wood under unsterile conditions. The test procedure needs further development work, but the results are so promising that co-operation with CEN and EHC is initiated with the purpose of recognition and standardization....
B Jensen
Ecotoxicological risks of anti-sapstain preservatives washed off from treated timber
2000 - IRG/WP 00-50144
A field method for ecotoxicity assessment of rain water wash-off from anti-sapstain treated timber was developed. In the course of this study freshly sawn timber treated with 1.5% Busan 30 L (reference preservative) and a control stack with untreated pine were exposed to weathering. The run-off water was ecotoxicologically tested with organisms from three trophic levels (Vibrio fischeri, Kirchneri...
G Aschacher, R Gründlinger
Anti-stain field trials in British Columbia
1981 - IRG/WP 3174
Four alternative anti-sap stain chemicals were subjected to a four month field evaluation during the summer of 1980. The test, established at a Vancouver Island sawmill, was designed to evaluate the potential long-term effectiveness of sodium tribromophenate (Velsicol Ltd.), Biocom XX (Bramco Industries) containing methylene bis-thiocyanate, Woodbrite NTX (Van Waters & Rogers Ltd.) containing ...
D V Plackett
A comparative field test of the effectiveness of anti-sapstain treatments on radiata pine roundwood
1986 - IRG/WP 3376
Peeled radiata pine posts were sprayed with one of six antisapstain formulations, with and without a wax water-repellent additive, to evaluate the protection given by each treatment. After 3 months' outside storage the best treatments tested were 4% product Busan 30, 2% product Busan 1009, and 2% active sodium pentachlorophenoxide (NaPCP) with 1.5% borax. After 6 months' storage ...
J A Drysdale, R M Keirle
Proposals for collaborative work on laboratory soft rot testing
1986 - IRG/WP 2265
Proposals for collaborative experiments based on soil burial are presented. It is intended to study the use of defined horticultural loams with a view to obtaining more reproducability in laboratory soft rot tests....
D J Dickinson, S M Gray
Decay resistance of resin treated wood
1999 - IRG/WP 99-30206
Selected natural resin systems were evaluated for their potential as wood protecting agents according to standard test procedures. As indicated by the European standard EN 599 both a Basidiomycete test according to EN 113 and a ENV 807 soil bed test were carried out. Six resin treatments were tested using 3 concentration or treatment levels. Using the biocidal activity criteria as usually applied ...
J Van Acker, A J Nurmi, S M Gray, H Militz, C Hill, H Kokko, A O Rapp
Programme section 2, Test methodology and assessment
1996 - IRG/WP 96-20094
IRG Secretariat
A field test with anti-sapstain chemicals on sawn pine timber in Finland
1986 - IRG/WP 3368
Fourteen formulations, each in two concentrations, were tested for effectiveness against sapstain, mould and decay on Scots pine (Pinus sylvestris L.) in a field test in South-Finland. The trial was commenced in June 1985 and finished in October 1985. During the test the boards were infected mainly by mould fungi. In kiln dried boards the protective effects of nine and in green boards of four trea...
L Paajanen
Programme Section 2 Test methodology and assessment
1999 - IRG/WP 99-20180
IRG Secretariat
Field and laboratory studies on anti-sapstain preservatives
1982 - IRG/WP 3205
The field tests included 11 different anti-sapstain preservatives and were carried out at different sawmills in southern Sweden. Drying conditions, climate and the local fungus flora were not identical for the different preservatives and comparisons between the preservatives should therefore be made with caution. Results obtained in the field tests are, however, in relatively good agreement with t...
M-L Edlund, B Henningsson
Criteria for basidiomycetes testing and ways of defining natural durability classes
1998 - IRG/WP 98-20144
Within the framework of a European research project several laboratories have tested a series of 17 wood species covering the total range of natural durability.
Basidiomycete tests are part of the total set up. Although generally based upon standard methods some minor differences in execution of the tests were evaluated for their impact on the results. This variation was superimposed with the fac...
J Van Acker, M Stevens, J K Carey, R Sierra-Alvarez, H Militz, I Le Bayon, G Kleist, R-D Peek
A summary of work carried out to compare natural and artificial weathering for preconditioning test specimens in testing anti-stain chemicals for wood in service
1976 - IRG/WP 266
Since 1972 work has been in progress within CEN to establish a European standard for the testing of wood preservatives designed to prevent blue-staining of wood in service. The method is based on the Butin test and involves pre-weathering of the samples prior to biological testing. The weathering regime employed is 6 months outside exposure from March to October. This imposes severe limitations on...
D J Dickinson, A F Bravery
Blue stain resistance of exterior wood coatings as a function of their typology
1998 - IRG/WP 98-20145
Paints and wood stains were evaluated on their blue stain resistance using both EN 152 method and the reverse method. The typology of these exterior coatings was varied including standard and high solid solvent-borne coatings as well as different types of waterborne coatings. For the water-borne acrylic, alkyd based and hybrid coatings both applied as opaque primer paints and as decorative wood st...
J Van Acker, M Stevens, C Brauwers, V Rijckaert, E Mol
A field test with anti-sapstain chemicals on sawn pine timber stored and seasoned under different conditions
1984 - IRG/WP 3245
Newly sawn timber of European redwood (Pinus sylvestris L.) was dip treated in four different anti-sapstain chemicals. The protectife effect against sapstain, mould and decay was examined after 10 weeks' and 10 months' storage in open and closed stacks. The results showed that the performance of individual chemicals was different in open and close stacks, although the wood as wel...
D J Dickinson, B Henningsson
Effectiveness of some microbiocides against the development of molds and sapstain in Pinus elliottii
1981 - IRG/WP 3169
Eleven commercial biocidal formulations were tested in the field to determine their effectiveness in protecting logs and lumber of Pinus elliottii sapwood from sap stain and molds. Among these formulations 2-(thiocyanomethylthio) benzothiazole showed the best performance in controlling both types of fungi. Potassium N-hydroxymethyl-N-methyl dithiocarbamate and the mixture potassium N-methyl dithio...
S Milano
Comparison of the FRIM and forest research laboratory methods for screening of anti-sapstain formulations
1999 - IRG/WP 99-20170
Two laboratory methods for screening of anti-sapstain formulations were compared. The method adopted by the Forest Research Institute Malaysia (FRIM) involved 3 weeks assessment of rubberwood (Hevea brasiliensis) blocks, dipped in the candidate formulation and inoculated with mycelial/spore suspension of sapstain (Botryodiplodia theobromae) or decay (Schizophyllum commune) fungi, and incubated on ...
A H H Wong, D R Eden, C M Chittenden, M E Hedley, R N Wakeling