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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

Ferric chloride standard titration solution c(FeCl3)=0.05 mol/L
Ferric chloride standard titration solution c(FeCl3)=0.05 mol/L
c(FeCl3)=0.05 mol/L 
New
Ferric chloride standard titration solution

$22.00

Nitric acid standard titration solution c(HNO3)=0.05 mol/L
Nitric acid standard titration solution c(HNO3)=0.05 mol/L
c(HNO3)=0.05 mol/L 
New
Nitric acid standard titration solution

$22.00

Sodium dodecyl sulfate standard titration solution c(C12H25SO4Na)=0.05 mol/L
Sodium dodecyl sulfate standard titration solution c(C12H25SO4Na)=0.05 mol/L
c(C12H25SO4Na)=0.05 mol/L 
New
Sodium dodecyl sulfate standard titration solution

$22.00

Chloride ion standard titration solution c(Cl-)=0.00055 mol/L
Chloride ion standard titration solution c(Cl-)=0.00055 mol/L
c(Cl-)=0.00055 mol/L 
New
Chloride ion standard titration solution

$15.00

Chloride ion standard titration solution c(Cl-)=0.0055 mol/L
Chloride ion standard titration solution c(Cl-)=0.0055 mol/L
c(Cl-)=0.0055 mol/L 
New
Chloride ion standard titration solution

$15.00

Standard titration solution of sodium oxalate c(Na2C2O4)=0.001 mol/L
Standard titration solution of sodium oxalate c(Na2C2O4)=0.001 mol/L
c(Na2C2O4)=0.001 mol/L 
New
Standard titration solution of sodium oxalate

$15.00

Nitric acid standard titration solution c(HNO3)=0.75 mol/L
Nitric acid standard titration solution c(HNO3)=0.75 mol/L
c(HNO3)=0.75 mol/L 
New
Nitric acid standard titration solution

$22.00

Silver nitrate standard titration solution c(AgNO3)=0.05 mol/L
Silver nitrate standard titration solution c(AgNO3)=0.05 mol/L
c(AgNO3)=0.05 mol/L 
New
Silver nitrate standard titration solution

$40.00

Zinc standard solution c(Zn)=0.02 mol/L(含硝酸)
Zinc standard solution c(Zn)=0.02 mol/L(含硝酸)
c(Zn)=0.02 mol/L(含硝酸) 
New
Zinc standard solution

$22.00

Lead standard solution c(Pb2+)=1000 μg/mL(溶剂:5%硝酸)
Lead standard solution c(Pb2+)=1000 μg/mL(溶剂:5%硝酸)
c(Pb2+)=1000 μg/mL(溶剂:5%硝酸) 
New
Lead standard solution

$30.00

Ammonium ion standard solution c(NH4+)=10 ppb
Ammonium ion standard solution c(NH4+)=10 ppb
c(NH4+)=10 ppb 
New
Ammonium ion standard solution

$15.00

Iron standard solution c(Fe3+)=100 mg/mL
Iron standard solution c(Fe3+)=100 mg/mL
c(Fe3+)=100 mg/mL 
New
Iron standard solution

$22.00

Molybdenum standard solution c(Mo)=1000 μg/mL(介质：5%硝酸)
Molybdenum standard solution c(Mo)=1000 μg/mL(介质：5%硝酸)
c(Mo)=1000 μg/mL(介质：5%硝酸) 
New
Molybdenum standard solution

$22.00

Phosphorus standard solution c(P)=1000 μg/mL(介质：5%硝酸)
Phosphorus standard solution c(P)=1000 μg/mL(介质：5%硝酸)
c(P)=1000 μg/mL(介质：5%硝酸) 
New
Phosphorus standard solution

$22.00

Lithium standard solution c(Li+)=1000 μg/mL(介质：1%硝酸)
Lithium standard solution c(Li+)=1000 μg/mL(介质：1%硝酸)
c(Li+)=1000 μg/mL(介质：1%硝酸) 
New
Lithium standard solution

$137.00

Potassium standard solution c(K+)=1000 μg/mL(介质：1%硝酸)
Potassium standard solution c(K+)=1000 μg/mL(介质：1%硝酸)
c(K+)=1000 μg/mL(介质：1%硝酸) 
New
Potassium standard solution

$22.00

1,10-phenanthroline-ferrous indicator liquid (C12H8N2·H2O)=0.1%(wt)
1,10-phenanthroline-ferrous indicator liquid (C12H8N2·H2O)=0.1%(wt)
(C12H8N2·H2O)=0.1%(wt) 
New
1,10-phenanthroline-ferrous indicator liquid

$22.00

Methyl red indicator solution c(C15H15N3O2)=0.025 g/L
Methyl red indicator solution c(C15H15N3O2)=0.025 g/L
c(C15H15N3O2)=0.025 g/L 
New
Methyl red indicator solution

$15.00

Methyl orange solution c(C14H14N3SO3Na)=0.01 mol/L
Methyl orange solution c(C14H14N3SO3Na)=0.01 mol/L
c(C14H14N3SO3Na)=0.01 mol/L 
New
Methyl orange solution

$22.00

DNS solution c(C7H4N2O7)=10 g/L
DNS solution c(C7H4N2O7)=10 g/L
c(C7H4N2O7)=10 g/L 
New
DNS solution

$30.00

Methyl red-methylene blue indicator solution 0.1%,2:1
Methyl red-methylene blue indicator solution 0.1%,2:1
0.1%,2:1 
New
Methyl red-methylene blue indicator solution

$15.00

Methyl orange solution (C27H30O5S)=0.025%(wt)
Methyl orange solution (C27H30O5S)=0.025%(wt)
(C27H30O5S)=0.025%(wt) 
New
Methyl orange solution

$11.00

Bromothymol blue indicator solution (C27H28Br2O5S)=0.025%(wt)
Bromothymol blue indicator solution (C27H28Br2O5S)=0.025%(wt)
(C27H28Br2O5S)=0.025%(wt) 
New
Bromothymol blue indicator solution

$0.00

Methylene blue indicator solution 1.5 g/L
Methylene blue indicator solution 1.5 g/L
1.5 g/L 
New
Methylene blue indicator solution

$37.00

PBS buffer solution 10 mM,pH=7.4(25 ℃)
PBS buffer solution 10 mM,pH=7.4(25 ℃)
10 mM,pH=7.4(25 ℃) 
New
PBS buffer solution

$22.00

Tris-HCl Buffer Solution 0.05 mol/L,pH=8.6(25 ℃)
Tris-HCl Buffer Solution 0.05 mol/L,pH=8.6(25 ℃)
0.05 mol/L,pH=8.6(25 ℃) 
New
Tris-HCl Buffer Solution

$22.00

Acetic acid-sodium acetate buffer solution 0.1 M,pH=4.2(25 ℃)
Acetic acid-sodium acetate buffer solution 0.1 M,pH=4.2(25 ℃)
0.1 M,pH=4.2(25 ℃) 
New
Acetic acid-sodium acetate buffer solution

$22.00

Acetate buffer pH=4.65(25 ℃)
Acetate buffer pH=4.65(25 ℃)
pH=4.65(25 ℃) 
New
Acetate buffer

$22.00

Potassium dihydrogen phosphate - disodium hydrogen phosphate buffer solution pH=5.8(25 ℃)
Potassium dihydrogen phosphate - disodium hydrogen phosphate buffer solution pH=5.8(25 ℃)
pH=5.8(25 ℃) 
New
Potassium dihydrogen phosphate - disodium hydrogen phosphate buffer solution

$22.00

Acetic acid-sodium acetate buffer solution pH≈5.5(25 ℃)
Acetic acid-sodium acetate buffer solution pH≈5.5(25 ℃)
pH≈5.5(25 ℃) 
New
Acetic acid-sodium acetate buffer solution

$40.00

hepes buffer 1 M,pH=7.4(25 ℃)
hepes buffer 1 M,pH=7.4(25 ℃)
1 M,pH=7.4(25 ℃) 
New
hepes buffer

$22.00

Phosphate buffer solution 0.01 M,pH=7.0-7.2(25 ℃)
Phosphate buffer solution 0.01 M,pH=7.0-7.2(25 ℃)
0.01 M,pH=7.0-7.2(25 ℃) 
New
Phosphate 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

$70.00

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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