This specification covers zinc metal made from ore or other material by a process of distillation or by electrolysis in five grades as follows: LME grade, special high grade, high grade, intermediate grade, and prime western grade. The zinc metal shall be tested and conform to the chemical composition requirements of lead, iron, cadmium, aluminum, copper, tin, and non-zinc metals prescribed in this specification. The material shall be free of surface corrosion and adhering foreign matter. Representative samples from the molten metal during casting, and all part of these samples may be cast into shapes suitable for use in spectrochemical methods.1.1 This specification covers zinc metal made from ore or other material by a process of distillation or by electrolysis in five grades as follows:1.1.1 LME Grade1.1.2 Special High Grade1.1.3 High Grade1.1.4 Intermediate Grade1.1.5 Prime Western GradeNOTE 1: Certain continuous galvanizing grades are specified in Specification B852. Other continuous galvanizing and controlled lead grades are not included in this specification but are covered by specific user purchasing specifications.1.2 This specification does not cover zinc produced by “sweating” or remelting of secondary zinc.1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.1.5 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.

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定价： 2317元 / 折扣价： 1970 元 加购物车

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本标准规定了饲料添加剂维生素B6产品的要求、试验方法、检验规则、标签、包装、运输和贮存、保质期。 本标准适用于合成法制得的维生素B6,在饲料工业中作为维生素类饲料添加剂。 化学名称:6-甲基-5-羟基-3,4-吡啶二甲醇盐酸盐 分子式:C8H11NO3·HCl 相对分子质量:205.64(按1999年国际相对原子质量) 化学结构式:

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本标准规定了食品中维生素B6的测定方法。
第一法　液相色谱串联质谱法适用于食品中维生素B6的测定。
第二法　液相色谱质谱法适用于添加维生素B6(吡哆胺、吡哆醛和吡哆醇)作为营养强化剂的调制乳粉、特殊膳食用食品、即食谷物、焙烤食品和饮料中的维生素B6(吡哆胺、吡哆醛和吡哆醇)的测定。
第三法　高效液相色谱荧光检测法适用于添加维生素B6(吡哆胺、吡哆醛和吡哆醇)作为营养强化剂的调制乳粉、特殊膳食用食品(特殊医学用途食品除外)、即食谷物、焙烤食品和饮料中的维生素B6(吡哆胺、吡哆醛和吡哆醇)的测定。
第四法　微生物法适用于食品中维生素B6的测定。

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This standard specifies requirements, test method, inspection rule, label, packaging, transport, storage and shelf life of vitamin B6 (pyridoxine hydrochloride).
This standard is applicable to feed additive vitamin B6 (pyridoxine hydrochloride) which is manufactured by chemical synthesis method.

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本标准规定了饲料添加剂维生素B6（盐酸吡哆醇)产品的技术要求、试验方法、检验规则及标签、包装、运输、贮存和保质期。本标准适用于以化学合成法制得的饲料添加剂维生素B6（盐酸吡哆醇)。化学名称：6甲基5羟基3，4吡啶二甲醇盐酸盐结构式： 分子式：C8H11NO3·HCl相对分子质量：205.64（按2007年国际相对原子质量)

定价： 31元 / 折扣价： 27 元 加购物车

本标准规定了食品中维生素B6的测定方法。
本标准第一法为高效液相色谱法适用于添加了维生素B6的食品测定；第二法为微生物法适用于各类食品中维生素B6的测定。

定价： 31元 / 折扣价： 27 元 加购物车