酒店布草的pH值，是一个几乎没人关注、却直接影响客人体验的指标。新国标GB/T 22800-2023要求布草pH值控制在4.0-8.5之间。这个范围对应的是人体皮肤的弱酸性环境，超出这个区间，布草接触皮肤后可能引发刺痒、泛红甚至皮炎。

The pH value of hotel linens is an indicator that almost no one pays attention to, but directly affects the guest experience. The new national standard GB/T 22800-2023 requires the pH value of linen to be controlled between 4.0-8.5. This range corresponds to the weakly acidic environment of human skin. Beyond this range, contact between linen and the skin may cause itching, redness, and even dermatitis.

pH值超标，问题出在“洗”不在“造”。 布草出厂时的pH值通常没问题，但工业洗涤中使用的碱性洗涤剂如果漂洗不有效，残留的碱会让布草pH值偏高。一些洗涤厂为了追求“白度”，过量使用氧漂剂或碱性助剂，布草的pH值就可能超标。

The pH value exceeds the standard, and the problem lies in "washing" rather than "manufacturing". The pH value of linen when it leaves the factory is usually not a problem, but if the alkaline detergent used in industrial washing is not thoroughly rinsed, the residual alkali will make the pH value of linen higher. Some washing factories, in order to pursue "whiteness", excessively use oxygen bleaching agents or alkaline additives, which may cause the pH value of the linen to exceed the standard.

毛巾的pH值要求更严。 新国标对毛巾类产品的pH值要求是4.0-7.5，比床单被套的4.0-8.5更窄。原因很简单：毛巾直接接触面部和身体，且使用时会蘸水，残留物更容易通过水分接触皮肤。

The pH requirement for towels is stricter. The new national standard requires a pH value of 4.0-7.5 for towel products, which is narrower than the 4.0-8.5 range for bed sheets and duvet covers. The reason is simple: towels come into direct contact with the face and body, and when used, they are dipped in water, making it easier for residue to come into contact with the skin through moisture.

断裂强力下降和pH值超标，往往是“同一次洗涤”造成的。 工业洗涤中，氧漂剂的使用、洗涤温度的提高，不仅会加速织物强力下降，也可能带来化学残留。这意味着，洗涤流程的控制水平，同时决定了布草的“寿命”和“安全性”。

The decrease in fracture strength and excessive pH value are often caused by the same washing process. In industrial washing, the use of oxygen bleaching agents and the increase in washing temperature not only accelerate the decrease in fabric strength, but also may cause chemical residues. This means that the level of control over the washing process also determines the "lifespan" and "safety" of the linen.

采购时索要pH值检测数据，是对客人皮肤负责的基本动作。 正规供应商的检测报告会包含pH值项目。如果供应商只能提供“手感柔软”的口头描述，拿不出pH检测数据，这批布草的“亲肤性”就缺乏依据。酒店布草不是家用床品，它的安全性需要数据来证明。

Requesting pH testing data during procurement is a basic action responsible for the customer's skin. The testing report of regular suppliers will include pH value items. If the supplier can only provide a verbal description of "soft touch" and cannot provide pH test data, the "skin friendliness" of this batch of linen will lack basis. Hotel linens are not household bedding, and their safety requires data to prove.