Neutral red pH indicator solution pH:6.8(RED)-8.0(YELLOW) 553-24-2 C₁₅H₁₇ClN₄ 288.78 g./mol ฿320.00 View
Xylenol Blue pH indicator solution pH:1.2(RED)--2.8(YELLOW) 125-31-5 C₂₃H₂₂O₅S 410.48 g./mol ฿324.00 View