1.1 This test method covers the determination of the time of setting of portland-cement pastes containing quick-setting accelerating admixtures for shotcrete.1.2 The values stated in SI units are to be regarded as the standard.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.

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The performance of an admixture for shotcrete in the field varies with the composition of the hydraulic cement and sand combination. Since this test method involves the determination of time of setting of a particular combination of hydraulic cement, sand and an admixture, it therefore provides information on the suitability for use of that particular combination in the field.The time of setting of the combination established in the laboratory does not necessarily indicate the time of setting this combination will produce in actual shotcreting in the field.This method is used to determine the effect on time of setting of mortars containing admixtures as compared to a control mortar.The test method is used for comparison in laboratory pre–evaluation studies to demonstrate the effect of shotcrete admixtures in mortar compared with plain mortar and can be used to demonstrate or compare the performance of shotcrete admixtures which produce rapid setting or rapid rheological stiffening of shotcrete.The test method is used to evaluate the relative performance of more than one shotcrete admixture for comparison of performance.The test method is used to determine or verify that no adverse effects on setting time may be experienced with the use of admixtures that are not intended to accelerate or are used to produce stiffening of shotcrete mixtures.Although specific environmental conditions are indicated, the testing environment can be varied to simulate the performance of admixtures in mortars at different temperatures. Such variations are reported as indicated in Section 11.1.1 This is a laboratory test method that covers the determination of the time of setting of hydraulic-cement mortars containing additives for shotcrete for comparison with control mixes containing no additives or to compare the performance of shotcrete mixtures which contain additives that produce rapid setting or rapid stiffening of shotcrete.1.2 The values stated in SI units (see IEEE/ASTM SI 10) are the standard.This standard may involve hazardous materials, operations, and equipment. 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.

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5.1 The purpose of this test method is to establish whether a cement complies with a specification limit on Gillmore time of setting.1.1 This test method covers the determination of the time of setting of hydraulic-cement paste by means of the Gillmore needles.1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.3 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. (Warning—Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.)21.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 515元 / 折扣价： 438 元 加购物车

5.1 This test method determines whether Huber needles are designed and manufactured such that they will not produce a core during simulated implantable port access.5.2 If a needle produces a core during actual use, leaking of the implantable port may occur. Also, the core may be flushed into the port’s reservoir and subsequently into the patient’s body.1.1 This test method covers the qualitative measurement of Huber-type needles’ potential to remove septum material during implantable port access (1).21.2 This test method does not address other issues that may include, but are not limited to, force measurement during the perforation/withdrawal, septum integrity, and any safety issues.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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 590元 / 折扣价： 502 元 加购物车

5.1 This test method provides a means of assessing the penetration force of a surgical needle through the chosen media.5.2 The needle is passed through a chosen medium at a chosen speed and path which applies a force on the load cell that reflects the needle’s resistance to penetration as a function of its shape and coating.1.1 This test method describes the procedure for penetration testing sharp and blunt needles used for the placement of surgical sutures. It only describes the test procedures (Phase 1) and does not define a test medium at this time. Test media will be address in the next phase (Phase 2) of this test method’s evolution.1.2 This test method applies to straight and curved surgical needles.1.3 This test method does not intend to address the value of the test with respect to actual conditions of use.1.4 In this test method, it is assumed the needles used for this test have passed all applicable quality standards and have no physical malformation that would inappropriately influence the test results.1.5 This test method quantifies the force required for a needle to pass through a medium and its ability to do so multiple times.1.6 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.1.7 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.

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This terminology covers the general definitions of terms specific to stainless steel surgical suture needles.1.1 This terminology covers general definitions for surgical needles.1.2 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 515元 / 折扣价： 438 元 加购物车

This specification provides the performance requirements and associated test procedures for the puncture resistance of materials used in the construction of containers for discarded medical needles and other sharps. It shall establish the average and minimum value of puncture force that the container materials must withstand under controlled laboratory conditions and normal room temperature when following the test procedure described herein. Materials meeting the specified performance requirements will be considered puncture resistant, but this specification will not evaluate the construction of, or provide pass/fail criteria for, sharps containers.1.1 The purpose of this specification is to provide a test procedure and performance requirement for the puncture resistance of materials used in the construction of containers for discarded medical needles and other sharps. This test specification will establish (1) the average puncture force and (2) a minimum value of puncture force that container material(s) must withstand when following the test procedure described in Section 6. This specification shall be applicable to regions of uniform material and thickness, and needle contact areas as defined in 3.1.7 and 3.1.9. Materials meeting the performance requirements of Section 4 shall be considered “puncture-resistant.” This specification does not evaluate the construction of, or provide pass/fail criteria for, a sharps container.1.2 This specification provides a test procedure to determine if all regions of one container meet the material puncture resistance requirements. It does not define the number of additional test containers required to achieve a statistically valid sample of a manufacturing lot or process. An appropriate sampling plan shall be determined by the test requester, as this depends upon the manufacturing process variability, manufacturing lot size, and other factors, such as end-user requirements.1.3 This specification is intended to evaluate the performance of materials used in the construction or manufacture of sharps containers under controlled laboratory conditions, and at normal room temperature (see 6.1). (Warning—This specification only characterizes material puncture resistance at normal room temperatures. Applications of sharps containers outside the range of 23 ± 2°C (such as usage in emergency vehicles) require further material characterization by the product specifier to determine suitable use.)1.4 The values stated in inch/pound are to be regarded as the standard. The SI values given in parentheses are for information only.1.5 The following hazard caveat pertains only to the test procedure portion, Section 6, of this specification.1.6 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.

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This test method provides a means of assessing the yield moment and maximum moment of a surgical needle.The needle is bent against a platform or knife edge, and it is bent at the approximate location where a pair of needle holders would grip it. This simulates the actual bending of a needle while in surgical use.1.1 This test method describes the procedure for bend testing needles used for the placement of surgical sutures.1.2 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.

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