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Published TCIMAIL newest issue No.202 | Product Document Searching Made Easy by 2D Code! | TCI Life Science News August 2026 | [Product Highlights] Easy-to-Use Membrane Protein... | Various analytical charts can be searched on each product detail page and Product Document Search (The kinds of analytical charts differ by product)

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pH Measurement Reagents

The arrangement is in the order of the ranges in color change.
The color notation is abbreviated as follows;
B=Blue, Br=Brown, C=Colorless, G=Green, Gy=Gray, O=Orange, P=Pink, R=Red, V=Violet, Y=Yellow, s=slightly

	Product No.	Product Name	Ranges of color change
	G0177	Methyl Violet	(Y)0.1-3.2(V)
	B0781	Benzopurpurine 4B	(B)1.0-4.0(R)
	M0490	Acid Yellow 36	(R)1.2-2.3(Y)
*	M0074	m-Cresol Purple	(R)1.2-2.8(Y)
	S0045	m-Cresol Purple Sodium Salt	(R)1.2-2.8(Y)
*	X0016	p-Xylenol Blue	(R)1.2-2.8(Y)
*	T0235	Thymol Blue	(R)1.2-2.8(Y)
	S0049	Thymol Blue Sodium Salt	(R)1.2-2.8(Y)
	A0576	Aniline Yellow	(R)1.2-3.0(Y)
	P0631	Pentamethoxy Red	(RV)1.2-3.8(C)
	B0425	Benzyl Orange	(R)1.9-3.3(Y)
	D0109	2,4-Dinitrophenol (wetted with ca. 20% Water)	(sY)2.6-4.0(Y)
*	D0231	Methyl Yellow	(R)2.9-4.0(Y)
	T0039	Tetrabromophenol Blue	(YG)3.0-4.6(B)
*	B0574	Bromochlorophenol Blue	(Y)3.0-4.6(V)
*	B0631	Bromophenol Blue	(Y)3.0-4.6(BV)
	S0043	Bromophenol Blue Sodium Salt	(Y)3.0-4.6(BV)
*	C0550	Congo Red	(V)3.0-5.0(RO)
*	M0489	Methyl Orange	(R)3.1-4.4(OY)
	E0155	Ethyl Orange	(R)3.4-4.8(Y)
	A5107	TBPE	(YG)3.4-5.4(BV)
	E0054	4-Ethoxychrysoidine Hydrochloride	(R)3.5-5.5(Y)
*	B0578	Bromocresol Green	(Y)3.8-5.4(B)
	S0041	Bromocresol Green Sodium Salt	(Y)3.8-5.4(B)
	D0841	2,5-Dinitrophenol (wetted with ca. 20% Water)	(sY)4.0-5.8(Y)
*	M0421	Methyl Red	(R)4.2-6.2(Y)
	M0424	Methyl Red Sodium Salt	(R)4.2-6.2(Y)
	L0079	Lacmoid	(P)4.4-6.6(V)
*	N0220	4-Nitrophenol	(sY)4.8-7.6(Y)
*	C0245	Chlorophenol Red	(Y)5.0-6.6(R)
	C0247	Chlorophenol Red Sodium Salt	(Y)5.0-6.6(R)
	N0223	4-Nitrophenol Sodium Salt Dihydrate	(sY)5.0-7.6(Y)
*	B0580	Bromocresol Purple	(Y)5.2-6.8(V)
	B0632	Bromophenol Red	(Y)5.2-6.8(R)
*	B0657	Bromothymol Blue	(Y)6.0-7.6(B)
	S0044	Bromothymol Blue Sodium Salt	(Y)6.0-7.6(B)
	B0998	Bromoxylenol Blue	(Y)6.0-7.6(B)
*	N0315	Neutral Red	(R)6.8-8.0(Y)
	A0598	Pararosolic Acid	(O)6.8-8.0(VR)
*	P0100	Phenol Red	(Y)6.8-8.4(R)
	P0102	Phenol Red Sodium Salt	(Y)6.8-8.4(R)
	N0222	2-Nitrophenol Sodium Salt	(sY)6.8-8.6(Y)
*	N0031	α-Naphtholphthalein	(O)7.0-8.6(B)
*	C0406	Cresol Red	(Y)7.2-8.8(R)
	S0046	Cresol Red Sodium Salt	(Y)7.2-8.8(R)
*	M0074	m-Cresol Purple	(Y)7.4-9.0(V)
	S0045	m-Cresol Purple Sodium Salt	(Y)7.4-9.0(V)
	B0817	Ethyl Bis(2,4-dinitrophenyl)acetate	(C)7.5-9.1(B)
*	P0094	Phenolphthalein	(C)7.8-10.0(P)
*	T0235	Thymol Blue	(Y)8.0-9.6(B)
	S0049	Thymol Blue Sodium Salt	(Y)8.0-9.6(B)
*	X0016	p-Xylenol Blue	(Y)8.0-9.6(VB)
*	C0404	o-Cresolphthalein	(C)8.0-9.8(P)
*	T0237	Thymolphthalein	(C)8.6-10.5(B)
*	A0579	Mordant Orange 1	(YO)10.0-12.0(OR)
*	A0578	Alizarin Yellow GG	(Y)10.0-12.0(BrY)
	R0010	Tropaeolin O	(Y)11.0-12.8(R)
	T0496	1,3,5-Trinitrobenzene (wetted with ca. 40% Water)	(C)11.5-14.0(O)
*	I0214	Indigo Carmine	(B)11.6-14.0(Y)