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Codow - Your trusted brand of analytical reagents

Standard titration solution, indicator solution, buffer solution
Comply with international standards, ISO 9001 quality system

More than 20,000 product specifications, 50,000+ scientific researchers, 8,000+ corporate users’ common trust.

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Clean production environment

All products are produced and packaged in a clean environment
The production workshop is equipped with first-class ultrapure water and fresh air system

R&D and production systems comply with ISO 9001 quality system standards.

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Professional production and analysis equipment and instruments

Equipped with advanced production equipment and analytical instruments
Verified and calibrated by authoritative metrology institutions

More than 80 sets of production equipment, more than 30 sets of analytical instruments, and more than 2,000 square meters of analytical space.

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New Products

More than 200 products are updated every month

Ethylenediaminetetraacetic acid disodium standard titration solution c(EDTA)=0.0125 mol/L
Ethylenediaminetetraacetic acid disodium standard titration solution c(EDTA)=0.0125 mol/L
c(EDTA)=0.0125 mol/L 
New
Ethylenediaminetetraacetic acid disodium standard titration solution

$15.00

Hydrochloric acid standard solution 9+1000
Hydrochloric acid standard solution 9+1000
9+1000 
New
Hydrochloric acid standard solution

$15.00

Zinc standard titration solution c(Zn2+)=100 μg/ml
Zinc standard titration solution c(Zn2+)=100 μg/ml
c(Zn2+)=100 μg/ml 
New
Zinc standard titration solution

$11.00

Sodium oxalate solution c(Na2C2O4)=0.1 mol/L
Sodium oxalate solution c(Na2C2O4)=0.1 mol/L
c(Na2C2O4)=0.1 mol/L 
New
Sodium oxalate solution

$15.00

Zinc nitrate standard solution [Zn(NO3)2]=2%(wt)
Zinc nitrate standard solution [Zn(NO3)2]=2%(wt)
[Zn(NO3)2]=2%(wt) 
New
Zinc nitrate standard solution

$30.00

Silver nitrate standard titration solution c(AgNO3)=0.16 mol/L
Silver nitrate standard titration solution c(AgNO3)=0.16 mol/L
c(AgNO3)=0.16 mol/L 
New
Silver nitrate standard titration solution

$75.00

Silver nitrate standard titration solution c(AgNO3)=0.02 mol/L
Silver nitrate standard titration solution c(AgNO3)=0.02 mol/L
c(AgNO3)=0.02 mol/L 
New
Silver nitrate standard titration solution

$30.00

Sodium hydroxide standard titration solution c(NaOH)=0.01 mol/L
Sodium hydroxide standard titration solution c(NaOH)=0.01 mol/L
c(NaOH)=0.01 mol/L 
New
Sodium hydroxide standard titration solution

$20.00

Residual chlorine standard solution 4 mg/L
Residual chlorine standard solution 4 mg/L
4 mg/L 
New
Residual chlorine standard solution

$30.00

Residual chlorine standard solution 3 mg/L
Residual chlorine standard solution 3 mg/L
3 mg/L 
New
Residual chlorine standard solution

$30.00

Fluoride standard solution for impurity determination c(F-)=0.1 mg/L
Fluoride standard solution for impurity determination c(F-)=0.1 mg/L
c(F-)=0.1 mg/L 
New
Fluoride standard solution for impurity determination

$15.00

Residual chlorine standard solution 0.05 mg/L
Residual chlorine standard solution 0.05 mg/L
0.05 mg/L 
New
Residual chlorine standard solution

$22.00

Residual chlorine standard solution 0.1 mg/L
Residual chlorine standard solution 0.1 mg/L
0.1 mg/L 
New
Residual chlorine standard solution

$22.00

Cerium standard solution c(Ce)=1000 μg/mL
Cerium standard solution c(Ce)=1000 μg/mL
c(Ce)=1000 μg/mL 
New
Cerium standard solution

$11.00

Chlorine ion standard solution c(Cl-)=0.25 ppm
Chlorine ion standard solution c(Cl-)=0.25 ppm
c(Cl-)=0.25 ppm 
New
Chlorine ion standard solution

$15.00

Chlorine ion standard solution c(Cl-)=0.2 ppm
Chlorine ion standard solution c(Cl-)=0.2 ppm
c(Cl-)=0.2 ppm 
New
Chlorine ion standard solution

$15.00

Bromophenol blue solution (C23H18Br2O5)=1%(wt)
Bromophenol blue solution (C23H18Br2O5)=1%(wt)
(C23H18Br2O5)=1%(wt) 
New
Bromophenol blue solution

$15.00

Bromophenol blue indicator solution (C23H18Br2O5)=1%(wt)(溶剂：乙醇)
Bromophenol blue indicator solution (C23H18Br2O5)=1%(wt)(溶剂：乙醇)
(C23H18Br2O5)=1%(wt)(溶剂：乙醇) 
New
Bromophenol blue indicator solution

$15.00

Bromocresol green-methyl red indicator solution 3 g/L,1:5,(溶剂：氢氧化钠)
Bromocresol green-methyl red indicator solution 3 g/L,1:5,(溶剂：氢氧化钠)
3 g/L,1:5,(溶剂：氢氧化钠) 
New
Bromocresol green-methyl red indicator solution

$22.00

Phenolphthalein indicator solution c(C20H14O4)=1 g/L(溶剂：无水乙醇)
Phenolphthalein indicator solution c(C20H14O4)=1 g/L(溶剂：无水乙醇)
c(C20H14O4)=1 g/L(溶剂：无水乙醇) 
New
Phenolphthalein indicator solution

$11.00

Ammonium iron sulfate saturated indicator solution 饱和
Ammonium iron sulfate saturated indicator solution 饱和
饱和 
New
Ammonium iron sulfate saturated indicator solution

$37.00

Chlorine ion indicator (K2CrO4)=10%(wt)
Chlorine ion indicator (K2CrO4)=10%(wt)
(K2CrO4)=10%(wt) 
New
Chlorine ion indicator

$22.00

Bright cresol blue indicator solution c(C34H42Cl4N8O2Zn)=1 g/L
Bright cresol blue indicator solution c(C34H42Cl4N8O2Zn)=1 g/L
c(C34H42Cl4N8O2Zn)=1 g/L 
New
Bright cresol blue indicator solution

$15.00

Phenanthroline indicator (C12H8N2·H2O)=5%(wt)
Phenanthroline indicator (C12H8N2·H2O)=5%(wt)
(C12H8N2·H2O)=5%(wt) 
New
Phenanthroline indicator

$15.00

1×PBS phosphate buffered solution 0.05 M,pH=7.8(25℃)
1×PBS phosphate buffered solution 0.05 M,pH=7.8(25℃)
0.05 M,pH=7.8(25℃) 
New
1×PBS phosphate buffered solution

$22.00

Acetic acid sodium acetate buffer pH=5.6(25 ℃)
Acetic acid sodium acetate buffer pH=5.6(25 ℃)
pH=5.6(25 ℃) 
New
Acetic acid sodium acetate buffer

$22.00

Acetic acid-sodium acetate buffer solution 0.2 M,1:1(v/v),pH=4.5(25℃)
Acetic acid-sodium acetate buffer solution 0.2 M,1:1(v/v),pH=4.5(25℃)
0.2 M,1:1(v/v),pH=4.5(25℃) 
New
Acetic acid-sodium acetate buffer solution

$22.00

Potassium chloride-hydrochloric acid buffer solution 0.2 M,25:67(v/v),pH=1.0(25℃)
Potassium chloride-hydrochloric acid buffer solution 0.2 M,25:67(v/v),pH=1.0(25℃)
0.2 M,25:67(v/v),pH=1.0(25℃) 
New
Potassium chloride-hydrochloric acid buffer solution

$15.00

Acetic acid-ammonium acetate buffer 0.1 M,pH=5.5(25℃)
Acetic acid-ammonium acetate buffer 0.1 M,pH=5.5(25℃)
0.1 M,pH=5.5(25℃) 
New
Acetic acid-ammonium acetate buffer

$22.00

Potassium phosphate buffer 1 M pH=7.0(25℃)
Potassium phosphate buffer 1 M pH=7.0(25℃)
1 M pH=7.0(25℃) 
New
Potassium phosphate buffer

$30.00

Acetate buffer solution pH≈3.5(25℃)
Acetate buffer solution pH≈3.5(25℃)
pH≈3.5(25℃) 
New
Acetate buffer solution

$22.00

Acetic acid-sodium acetate buffer solution 0.1 M,pH=6.5(25℃)
Acetic acid-sodium acetate buffer solution 0.1 M,pH=6.5(25℃)
0.1 M,pH=6.5(25℃) 
New
Acetic acid-sodium acetate buffer solution

$22.00

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Hot Products

Quality verified by over 50,000 users, high quality and low price

Copper sulfate solution c(CuSO4)=20 g/L
Copper sulfate solution c(CuSO4)=20 g/L
c(CuSO4)=20 g/L 
Hot
Copper sulfate solution

$8.00

Silver nitrate standard titration solution c(AgNO3)=0.1 mol/L
Silver nitrate standard titration solution c(AgNO3)=0.1 mol/L
c(AgNO3)=0.1 mol/L 
Hot
Silver nitrate standard titration solution

$33.00

Sulfuric acid standard titration solution c(1/2H2SO4)=0.1 mol/L
Sulfuric acid standard titration solution c(1/2H2SO4)=0.1 mol/L
c(1/2H2SO4)=0.1 mol/L 
Hot
Sulfuric acid standard titration solution

$9.00

Sodium hydroxide standard titration solution c(NaOH)=0.1 mol/L
Sodium hydroxide standard titration solution c(NaOH)=0.1 mol/L
c(NaOH)=0.1 mol/L 
Hot
Sodium hydroxide standard titration solution

$7.00

Dimethyl yellow indicator solution 中国药典,1 g/L
Dimethyl yellow indicator solution 中国药典,1 g/L
中国药典,1 g/L 
Hot
Dimethyl yellow indicator solution

$11.00

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