37116

pH 试纸

pH range 1.0-12.0

• UNSPSC代码: 41113319

属性

• 特点: non-bleeding: no; refill: no
• graduations and accuracy measuring range: accuracy: 1.0 pH unit
• pH值范围: 1.0-12.0
• 适用性: corresponds for shade of color acc. to scale
• 应用: general analytical
• 检测方法: colorimetric

说明

一般描述

Indicator papers are prepared by either direct dyes or reactive dyes. During reactive dyes procedure, pure linters are suspended in water and reactive dye is added. The mixture is made alkaline for the reaction to start. The fiber pulp is centrifuges, washed to be electrolyte-free and processed as pH paper. Paper produced in this way is bonded to plastic material in order to be used as stick or strip. Some strips are produced by impregnation which bleed, certain portion of the indicator dye dissolves in the test solution during immersion. pH strips with covalently bonded indicator dyes remain indefinitely in solution without migration or dissolution.

应用

pH indicator strip may be used during the synthesis of modified nucleotides for site-directed DNA photoaffinity labelling of RNA polymerase III transcription complexes.

特点和优势

每条都具有鉴别尺和打印的 pH 值刻度。可用于有色溶液和悬浮液，精确度高。

包装

200 条/包