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防護(hù)手套CE認(rèn)證EN420標(biāo)準(zhǔn)

防護(hù)手套出口到歐盟銷售是要做EN420標(biāo)準(zhǔn)測(cè)試的，下面小編就簡(jiǎn)單介紹一下EN420標(biāo)準(zhǔn)一般要求和測(cè)試方法等內(nèi)容，大家可以做一個(gè)參考。

EN 420: 2003 + A1: 2009

Protective gloves. General requirements and test methods

EN 420：2003 + A1：2009

防護(hù)手套EN420標(biāo)準(zhǔn)一般要求和測(cè)試方法

This standard is designed to ensure that the gloves themselves do not cause harm to the wearer and are comfortable to wear. Tests and requirements include the pH and chrome VI content of leather plus water vapour transmission and absorption of materials. Also procedures to examine the sizing of the glove and its effect on finger dexterity are covered plus general requirements for the information to be supplied with and marked on the glove.

該標(biāo)準(zhǔn)旨在確保手套本身不會(huì)對(duì)佩戴者造成傷害，而且佩戴舒適。測(cè)試和要求包括皮革的pH和六價(jià)鉻含量，以及材料的水汽傳輸和吸收性能。此外，還包括檢查手套尺寸及其對(duì)手指靈活性的影響，以及手套標(biāo)示和隨附信息的一般要求。

Length 長(zhǎng)度 

The length of the glove is measured by suspending it from the middle finger with a graduated rule having a rounded tip designed to fit the tip of the finger. The glove is manipulated to remove any wrinkles or   folds and the minimum length is recorded. EN 420 includes a list of minimum lengths for each glove size, however, gloves for special purpose are permitted to be below the minimum length but in such situations the manufacturer must demonstrate that they are fit for special purpose by a statement in the user instructions.

專門用于測(cè)量手套長(zhǎng)度的量尺為圓柱形，一端為圓形，以配合手套指尖的形狀。將手套中指套在量尺上垂直懸掛，可以測(cè)得其長(zhǎng)度。測(cè)量時(shí)，要整理手套，不得有任何皺紋或折疊，記錄最小長(zhǎng)度。EN 420中列出了每種手套尺碼的最小長(zhǎng)度，不過，對(duì)于特殊用途的手套，允許低于最小長(zhǎng)度，但在這種情況下，制造商必須在使用說明書中聲明它們的特殊用途。

Sizing / Dexterity 尺碼/ 靈巧性

Gloves are fitted on a hand of the size that they are intended to fit and comments are made regarding comfort and fit. The wearer will then try to pick up pins of varying size to provide an indication of dexterity. Five pins are defined of diameter from 5 mm to 11mm, clearly the smaller the diameter that can be picked up the greater the dexterity result.

將手套佩戴在對(duì)應(yīng)尺碼的手上，對(duì)舒適性和貼合性做出評(píng)論。然后佩戴者將嘗試拾取不同尺寸的金屬小圓柱，了解其靈巧性。小圓柱的直徑分布為5mm到11mm，顯然，可以拾取的圓柱直徑越小，靈巧性結(jié)果越也越好。

pH Value pH值

The determination of pH value of both leathers and textiles on a glove is required. This pH value shall be greater than 3.5 and less than 9.5. The test samples are taken from the palm of the glove, if other part of the glove contains different material, these materials shall be tested separately. A prepared test sample is extracted in water by mechanical shaking; the aqueous extract is then decanted and the pH value determined by a pH meter. An excessive amount of acid or   alkali in a material has been linked to skin dermatitis and may indicate poor process control.

要求測(cè)定手套上皮革和紡織品的pH值，應(yīng)大于3.5且小于9.5。從手套的手掌部位取樣，如果手套的其他部位含有不同的材料，則應(yīng)分別測(cè)試。通過機(jī)械搖動(dòng)將制備的測(cè)試樣品在水中進(jìn)行提取，然后將水提取物倒出來，用pH計(jì)測(cè)定pH值。如果材料中酸或堿過量，會(huì)引起皮炎，可能表明制程控制不良。

Chrome VI 六價(jià)鉻

Each type of leather on a glove shall be tested separately and comply with the requirement of less than 3mg/kg of chromium VI. Two samples require testing from each leather type; these two samples shall be taken from different gloves. The soluble chromium VI is leached from the leather in a phosphate buffer. The chromium VI in the extract is then oxidized to produce a red/violet colour; this can then be quantified by a UV spectrophotometer. Chromium VI is a restricted substance as well as being a known allergen.

手套上的每種皮革應(yīng)單獨(dú)測(cè)試并符合六價(jià)鉻低于3mg / kg的要求。每種皮革要測(cè)試兩個(gè)樣品，并分別從不同的手套上取樣。在磷酸鹽緩沖液中，可溶性六價(jià)鉻會(huì)從皮革中濾出。提取物中的六價(jià)鉻會(huì)氧化，呈紅/紫色; 然后可以通過UV分光光度計(jì)測(cè)定其含量。六價(jià)鉻是已知的過敏原，也是限用物質(zhì)。

以上就是小編介紹的防護(hù)手套CE認(rèn)證EN420標(biāo)準(zhǔn)的一般要求和測(cè)試方法，如果您有產(chǎn)品辦理CE認(rèn)證可以直接聯(lián)系我們：021-33637866；400-618-3600；