定价： 796元 / 折扣价： 677 元 加购物车

定价： 345元 / 折扣价： 294 元 加购物车

定价： 345元 / 折扣价： 294 元 加购物车

Specifies optical character recognition (OCR) inks by their spectral characteristics for different users with the OCR community. It includes definitions, test methods, and information needed to apply this standard.

定价： 570元 / 折扣价： 485 元 加购物车

定价： 1475元 / 折扣价： 1254 元 加购物车

3.1 Zinc oxide functions as both a chemical and a pigment. It is used in a variety of applications including rubber, paint, reprography, glass, chemicals, etc. In paint, it contributes to mildew protection, ultraviolet absorption, hiding power, and neutralization of acids formed upon oxidation of the paint film.AbstractThis specification establishes the properties and requirements for the pigment commercially known as "zinc white" or zinc oxide, which may be purchased either in the dry or paste in oil forms. Dry pigments, which may be processed either by the French process or American process, shall conform individually to required compositions of zinc oxide, total sulfur, moisture and other volatile matter, total impurities (including moisture and other volatile matter), and coarse particles (total residue retained on a No. 325 sieve). Conversely, pigments in the paste in oil form shall adhere to required composition of the pigment, linseed oil, moisture and other volatile matter, and coarse particles and skins (total residue retained on a No. 325 sieve). Pigments shall also be tested for tinting strength, and oil absorption by Gardner-Coleman and spatula rub-out methods.1.1 This specification covers the pigments commercially known as “zinc white” or zinc oxide. The pigments may be purchased in the dry form or as a paste in oil.NOTE 1: Zinc oxides are used in many industries. For additional information, see Classification D4295 and Test Methods D4315 for descriptions of zinc oxide use in rubber compounding.1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.1.3 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

定价： 1475元 / 折扣价： 1254 元 加购物车

定价： 1756元 / 折扣价： 1493 元 加购物车

定价： 1475元 / 折扣价： 1254 元 加购物车

定价： 1475元 / 折扣价： 1254 元 加购物车

This test method covers the determination of bitumen content in materials containing at least 25 % bitumen. The sample shall be representative, and if it contains more than 2 % of water it shall be dehydrated. The procedures for the determination of bitumen content in materials are presented in details.1.1 This test method covers the determination of bitumen content in materials containing at least 25 % bitumen. Bitumen content may usually be expeditiously and accurately determined by Procedure No. 1, Section 7. However, some bituminous materials containing finely divided mineral matter may clog the filter or the mineral residue may not be easily retained, in which cases Procedure No. 2, Section 8, shall be followed.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 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 and regulatory limitations prior to use. For specific precautionary information, see Section 4.1.4 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： 515元 / 折扣价： 438 元 加购物车

3.1 An indication of the susceptibility to initiation of localized corrosion in this test method is given by the potential at which the anodic current increases rapidly. The more noble this potential, obtained at a fixed scan rate in this test, the less susceptible is the alloy to initiation of localized corrosion. The results of this test are not intended to correlate in a quantitative manner with the rate of propagation that one might observe in service when localized corrosion occurs.3.2 In general, once initiated, localized corrosion can propagate at some potential more electropositive than that at which the hysteresis loop is completed. In this test method, the potential at which the hysteresis loop is completed is determined at a fixed scan rate. In these cases, the more electropositive the potential at which the hysteresis loop is completed the less likely it is that localized corrosion will occur.3.3 If followed, this test method will provide cyclic potentiodynamic anodic polarization measurements that will reproduce data developed at other times in other laboratories using this test method for the two specified alloys discussed in 3.4. The procedure is used for iron-, nickel-, or cobalt-based alloys in a chloride environment.3.4 A standard potentiodynamic polarization plot is included. These reference data are based on the results from five different laboratories that followed the standard procedure, using specific alloys of Type 304 stainless steel, UNS S30400 and Alloy C-276, UNS N10276.3 Curves are included which have been constructed using statistical analysis to indicate the acceptable range of polarization curves.3.5 The availability of a standard test method, standard material, and standard plots should make it easy for an investigator to check his techniques to evaluate susceptibility to localized corrosion.1.1 This test method covers a procedure for conducting cyclic potentiodynamic polarization measurements to determine relative susceptibility to localized corrosion (pitting and crevice corrosion) for iron-, nickel-, or cobalt-based alloys in a chloride environment. This test method also describes an experimental procedure which can be used to check one's experimental technique and instrumentation.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 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： 702元 / 折扣价： 597 元 加购物车

1.1 Scope of Z299.0 1.1.1 This Guide explains the intent and compares the increasing comprehensiveness and sophistication of the four Quality Assurance Program Standards in the CAN3-Z299 series. Guidance is provided for selecting appropriate Standard

定价： 410元 / 折扣价： 349 元

定价： 7007元 / 折扣价： 5956 元

定价： 319元 / 折扣价： 272 元