BS ISO 21285:2019 pdf free.Soil quality – Inhibition of reproduction of the soil mite (Hypoaspis aculeifer) by soil contaminants.
Approximately 0,3 % to 1,0 % calcium carbonate (CaCO3, pulverised, analytical grade) are necessary to get a pH of 6,0 ± 0,5.
NOTE 1 Taking the properties of highly non-polar (log I(> 2) or ionizing substances into account, 5 % of peat have proven to be sufficient for maintaining the desired structure of the artificial soil.
NOTE 2 It has been demonstrated that Hypoaspis aculeifer can comply with the validity criteria even on reproduction when tested In fIeld soils with lower organic carbon content (e.g. 2,7 %), and there is experience that this can be achieved In artificial soil with 5 % peat. Therefore, it is not necessary before using such a soil in a definitive test to demonstrate the suitability of the artificial soil for allowing the test to comply with the validity criteria unless the peat contents lowered more than specified above.
Prepare the artificial soil at least three days prior to start the test, by mixing the dry constituents listed above thoroughly in a large-scale laboratory mixer. A portion of the deionized water required is added while mixing is continued. Allowance should be made for any water that Is used for introducing the test substance into the soil. The amount of calcium carbonate required can vary, depending on properties of the individual batch of sphagnum peat and should be determined by measuring sub-samples immediately before the test (see Annex C). Store the mixed artificial soil at room temperature for at least two days to equilibrate acidity. To determine pH and the maximum water holding capacity, the dry artificial soil is pre-moistened one or two days before starting the test by adding deionised water to obtain approximately half of the required final water content of 40 % to 60% of the maximum water holding capacity.
The total water-holding capacity shall be determined in accordance with Annex B, the pH shall be determined according to ISO 10390.
5.3 Reference substance
5.3.1 General. To ensure the quality of the test system, tests should be performed regularly (once or twice a year) with a reference substance.
The NOEC and/or the EC of a reference substance shall be determined to provide assurance that the laboratory test conditions are adequate and to verify that the response of the test organisms did not change over time. The reference substance can be tested in parallel to the determination of the toxicity of each test sample at one concentration, which needs be demonstrated beforehand in a dose response study to result in an effect of about 50 %. In this case, the number of replicates should be the same as that in the controls. Alternatively, the reference substance is tested once or twice a year in a dose- response test. Depending on the design chosen, the number of concentrations and replicates and the spacing factor differ (see 2,1.3), but a response of 10 % to 90 % effect should be achieved (spacing factor of 1,8). Dimethoate as well as boric acid are suitable reference substances that have shown to affect reproduction[Z51.
The EC50 for dimethoate based on the number of juveniles should fall in the range between 3,0 mg a.s. (active substance)/kg soil (dry mass) and 7,0 mg a.s. (active substance)/kg soil (dry mass). Based on the results obtained with boric acid so far, the EC50 based on the number of juveniles should fall in the range between 100 mg/kg (dry mass) soil and 300 mg/kg (dry mass) soil.BS ISO 21285 pdf download.
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ISO 8600-1-2013 pdf free download.Endoscopes – Medical endoscopes and endotherapy devices – Part 1: General requirements. 6 Marking 6.1 Minimum marking Iach individual endoscope or endotherapy device shall have the lollowing minimum marking: a) model number and/or other mark sufficient to identify the endoscope or endotherapy device and its manufacturer; b) maximum insertion portion width, minimum instrument channel width, working length, field of view and/or direction of view where such identification is necessary for the intended use of the endoscope or endotherapy device. The Insertion portion width and instrument channel width units shall be in millimetres. The insertion portion width and instrument channel width can also be marked in French size as defined in 3.5, shown by either ‘Fr or an encircled number; c) wherever reasonable and practicable. the endoscope or endotherapy device and detachable component(s) shall be identified in terms of lot numbers or serial numbers, etc. 6.2 Marking legibility The marking shall remain legible over the lifetime of the device when the endoscope or endotherapy device is used, cleaned, disinlected, sterilized and stored in accordance with the instruction manual. 6.3 Marking exceptions When marking on the endoscope or endotherapy device or detachable component(s) is impossible to achieve due…
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ISO 15688-2012 pdf free download.Road construction and maintenance equipment – Soil stabilizers 一 Terminology and commercial specifications. This International Standard establishes the terminology, definitions of operation and commercial specifications for soil stabilizers and their components intended for use in road construction and pavement works. It does not apply to soil stabilizers used in agricultural applications. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.. ISO 3911, Wheels and rims for pneumatic tyres — Vocabulary, designation and marking ISO 6746-1, Earth-moving machinery — Definitions of dimensions and codes — Part 1: Base machine ISO 6746-2, Earth-moving machinery — Definitions of dimensions and codes — Part 2: Equipment and attachments ISO 7134. Earth-moving machinery — Graders — Terminology and commercial specifications 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 soil stabilizer self-propelled machine, either towed or transported, with the function of pulverizing, breaking-up, aerating, homogenizing, and loosening existing and imported soil or paving materials and mixing them…
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ISO 18436-1-2012 pdf free.Condition monitoring and diagnostics of machines – Requirements for qualification and assessment of personnel一 Part 1: Requirements for assessment bodies and the assessment process. 5 Requirements for assessment body personnel 5.1 General provisions In order to ensure that the assessment process is carried out effectively and uniformly, the competence requirements for personnel involved in the entire process shall be defined by the assessment body and, in the case of a third party, be approved by the responsible TCC (in accordance with ISO/IEC 17024). The assessment body shall require its personnel (internal or external) to sign a contract, or other document, by which they commit themselves to comply with the rules defined by the assessment body, including those relating to confidentiality and those relating to independence from commercial and other interests, and from any prior or present link with the persons to be examined that would, in the opinion of the interested parties, compromise impartiality. Clearly documented instructions shall be available to the personnel, describing their duties and responsibilities. These instructions shall be maintained up to date. All personnel involved in any aspect of assessment activities shall possess appropriate educational qualifications, experience and technical expertise, which satisfy defined…