PH廣範圍試紙1-14 80片

SKU: S657
$20.00
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SKU: S657 Category:

尺寸:70*50mm

描述

檢驗溶液酸堿度的“尺子”是“廣泛pH試紙”,這是壹種現成的試紙.

使用時,撕下壹條,放在表面皿中,用壹支幹燥的玻璃棒蘸取壹滴待測溶液,或用膠頭滴管吸取溶液滴在試紙中部,再根據試紙的顔色變化與標准比色卡比對就可以知道溶液的酸堿性度,十分方便。pH試紙分爲精密試紙和廣泛試紙。精密pH試紙的比色卡和廣泛試紙的比色卡不同。廣泛pH試紙的比色卡是隔壹個pH值壹個顔色,精密pH試紙按測量精度上可分0.5級、0.3級、0.2級或更高精度。

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