EN420防护手套CE认证怎么办理？

en420防护手套ce认证怎么办理？

防护手套ce认证en420标准

防护手套出口到欧盟销售是要做en420标准测试的，下面小编就简单介绍一下en420标准一般要求和测试方法等内容，大家可以做一个参考。

en 420: 2003 + a1: 2009

protective gloves. generalre and test methods

en 420：2003 + a1：2009

防护手套en420标准一般要求和测试方法

this standard is designed to ensurethat the gloves themselves do not cause harm to the wearer and arecomfortable to wear. tests and re include the ph andchrome vi content of leather plus water vapour transmission andabsorption of materials. also procedures to examine the sizing ofthe glove and its effect on finger dexterity are covered plusgeneral re for the information to be supplied with andmarked on the glove.

该标准旨在确保手套本身不会对佩戴者造成伤害，而且佩戴舒适。测试和要求包括皮革的ph和六价铬含量，以及材料的水汽传输和吸收性能。此外，还包括检查手套尺寸及其对手指灵活性的影响，以及手套标示和随附信息的一般要求。

length 长度 

the length of the glove is measured bysuspending it from the middle finger with a graduated rule having arounded tip designed to fit the tip of the finger. the glove ismanipulated to remove any wrinkles or   folds and theminimum length is recorded. en 420 includes a list of minimumlengths for each glove size, however, gloves for special purposeare permitted to be below the minimum length but in such situationsthe manufacturer must demonstrate that they are fit for specialpurpose by a statement in the user instructions.

专门用于测量手套长度的量尺为圆柱形，一端为圆形，以配合手套指尖的形状。将手套中指套在量尺上垂直悬挂，可以测得其长度。测量时，要整理手套，不得有任何皱纹或折叠，记录至小长度。en420中列出了每种手套尺码的至小长度，不过，对于特殊用途的手套，允许低于至小长度，但在这种情况下，制造商必须在使用说明书中声明它们的特殊用途。

sizing / dexterity 尺码/ 灵巧性

gloves are fitted on a hand of thesize that they are intended to fit and comments are made regardingcomfort and fit. the wearer will then try to pick up pins ofvarying size to provide an indication of dexterity. five pins aredefined of diameter from 5 mm to 11mm, clearly the smaller thediameter that can be picked up the greater the dexterityresult.

将手套佩戴在对应尺码的手上，对舒适性和贴合性做出评论。然后佩戴者将尝试拾取不同尺寸的金属小圆柱，了解其灵巧性。小圆柱的直径分布为5mm到11mm，显然，可以拾取的圆柱直径越小，灵巧性结果越也越好。

ph value ph值

the determination of ph value of bothleathers and textiles on a glove is re this ph value shallbe greater than 3.5 and less than 9.5. the test samples are takenfrom the palm of the glove, if other part of the glove containsdifferent material, these materials shall be tested separately. aprepared test sample is extracted in water by mechanical shaking;the aqueous extract is then decanted and the ph value determined bya ph meter. an excessive amount of acid or   alkali in amaterial has been linked to skin dermatitis and may indicate poorprocess control.

要求测定手套上皮革和纺织品的ph值，应大于3.5且小于9.5。从手套的手掌部位取样，如果手套的其他部位含有不同的材料，则应分别测试。通过机械摇动将制备的测试样品在水中进行提取，然后将水提取物倒出来，用ph计测定ph值。如果材料中酸或碱过量，会引起皮炎，可能表明制程控制不良。

chrome vi 六价铬

each type of leather on a glove shallbe tested separately and comply with the re of less than3mg/kg of chromium vi. two samples require testing from eachleather type; these two samples shall be taken from differentgloves. the soluble chromium vi is leached from the leather in aphosphate buffer. the chromium vi in the extract is then oxidizedto produce a red/violet colour; this can then be by a uvspectrophotometer. chromium vi is a restricted substance as well asbeing a known allergen.

手套上的每种皮革应单独测试并符合六价铬低于3mg /kg的要求。每种皮革要测试两个样品，并分别从不同的手套上取样。在磷酸盐缓冲液中，可溶性六价铬会从皮革中滤出。提取物中的六价铬会氧化，呈红/紫色;然后可以通过uv分光光度计测定其含量。六价铬是已知的过敏原，也是限用物质。