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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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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

Acetic acid solution c(CH3COOH)=0.1 mol/L
Acetic acid solution c(CH3COOH)=0.1 mol/L
c(CH3COOH)=0.1 mol/L 
New
Acetic acid solution

$15.00

Sulfuric acid standard solution c(H2SO4)=0.3 mol/L
Sulfuric acid standard solution c(H2SO4)=0.3 mol/L
c(H2SO4)=0.3 mol/L 
New
Sulfuric acid standard solution

$15.00

Sodium hydroxide standard titration solution c(NaOH)=0.06 mol/L
Sodium hydroxide standard titration solution c(NaOH)=0.06 mol/L
c(NaOH)=0.06 mol/L 
New
Sodium hydroxide standard titration solution

$15.00

1,2-Cyclohexanediamine tetraacetic acid disodium standard solution c(CDTA-2Na)=0.05000 mol/L
1,2-Cyclohexanediamine tetraacetic acid disodium standard solution c(CDTA-2Na)=0.05000 mol/L
c(CDTA-2Na)=0.05000 mol/L 
New
1,2-Cyclohexanediamine tetraacetic acid disodium standard solution

$95.00

Sodium acetate standard solution c(CH3COONa)=0.025 mol/L
Sodium acetate standard solution c(CH3COONa)=0.025 mol/L
c(CH3COONa)=0.025 mol/L 
New
Sodium acetate standard solution

$15.00

Standard titration solution of sodium nitrite c(NaNO2)=0.03 mol/L
Standard titration solution of sodium nitrite c(NaNO2)=0.03 mol/L
c(NaNO2)=0.03 mol/L 
New
Standard titration solution of sodium nitrite

$18.00

Cobalt nitrate standard titration solution c[Co(NO3)2]=1 mol/L
Cobalt nitrate standard titration solution c[Co(NO3)2]=1 mol/L
c[Co(NO3)2]=1 mol/L 
New
Cobalt nitrate standard titration solution

$105.00

Zinc nitrate standard solution c[Zn(NO3)2]=0.02 mol/L
Zinc nitrate standard solution c[Zn(NO3)2]=0.02 mol/L
c[Zn(NO3)2]=0.02 mol/L 
New
Zinc nitrate standard solution

$22.00

TOC Standards Solution c(C)=500 ppb
TOC Standards Solution c(C)=500 ppb
c(C)=500 ppb 
New
TOC Standards Solution

$22.00

Arsenic standard stock solution c(As)=0.1 μg/mL
Arsenic standard stock solution c(As)=0.1 μg/mL
c(As)=0.1 μg/mL 
New
Arsenic standard stock solution

$22.00

Sulfate standard solution c(SO42-)=0.1 mol/L
Sulfate standard solution c(SO42-)=0.1 mol/L
c(SO42-)=0.1 mol/L 
New
Sulfate standard solution

$15.00

Chlorine ion standard solution c(Cl-)=7.5 mg/L
Chlorine ion standard solution c(Cl-)=7.5 mg/L
c(Cl-)=7.5 mg/L 
New
Chlorine ion standard solution

$11.00

Chlorine ion standard solution c(Cl-)=5 mg/L
Chlorine ion standard solution c(Cl-)=5 mg/L
c(Cl-)=5 mg/L 
New
Chlorine ion standard solution

$11.00

Chlorine ion standard solution c(Cl-)=2.5 mg/L
Chlorine ion standard solution c(Cl-)=2.5 mg/L
c(Cl-)=2.5 mg/L 
New
Chlorine ion standard solution

$11.00

Potassium ion standard solution c(K+)=100 mg/L
Potassium ion standard solution c(K+)=100 mg/L
c(K+)=100 mg/L 
New
Potassium ion standard solution

$22.00

Phosphorus standard storage solution c(P5+)=100 mg/L
Phosphorus standard storage solution c(P5+)=100 mg/L
c(P5+)=100 mg/L 
New
Phosphorus standard storage solution

$22.00

1,10-Phenanthroline solution (C12H8N2)=0.1%(wt)
1,10-Phenanthroline solution (C12H8N2)=0.1%(wt)
(C12H8N2)=0.1%(wt) 
New
1,10-Phenanthroline solution

$15.00

Acid chrome blue K c(C16H13N2NaO12S3)=5 g/L
Acid chrome blue K c(C16H13N2NaO12S3)=5 g/L
c(C16H13N2NaO12S3)=5 g/L 
New
Acid chrome blue K

$15.00

Bromocresol purple indicator solution c(C2H16Br2O5S)=0.4 g/L (含0.02 mol/LNaOH)
Bromocresol purple indicator solution c(C2H16Br2O5S)=0.4 g/L (含0.02 mol/LNaOH)
c(C2H16Br2O5S)=0.4 g/L (含0.02 mol/LNaOH) 
New
Bromocresol purple indicator solution

$22.00

Bromocresol green indicator liquid c(C21H14Br4O5S)=0.4 g/L (含0.02 mol/LNaOH)
Bromocresol green indicator liquid c(C21H14Br4O5S)=0.4 g/L (含0.02 mol/LNaOH)
c(C21H14Br4O5S)=0.4 g/L (含0.02 mol/LNaOH) 
New
Bromocresol green indicator liquid

$22.00

Sodium alizarin sulfonate solution c(C14H7NaO7S)=0.5 g/L
Sodium alizarin sulfonate solution c(C14H7NaO7S)=0.5 g/L
c(C14H7NaO7S)=0.5 g/L 
New
Sodium alizarin sulfonate solution

$7.00

Bromocresol green-methyl red indicator solution 6 g/L,1:5
Bromocresol green-methyl red indicator solution 6 g/L,1:5
6 g/L,1:5 
New
Bromocresol green-methyl red indicator solution

$15.00

Methyl violet indicator solution c(C24H28ClN3)=1 g/L
Methyl violet indicator solution c(C24H28ClN3)=1 g/L
c(C24H28ClN3)=1 g/L 
New
Methyl violet indicator solution

$15.00

Calcium-magnesium indicator c(C17H14N2O5S)=2.5 g/L
Calcium-magnesium indicator c(C17H14N2O5S)=2.5 g/L
c(C17H14N2O5S)=2.5 g/L 
New
Calcium-magnesium indicator

$30.00

Phosphate buffer solution pH=5.5(25℃)
Phosphate buffer solution pH=5.5(25℃)
pH=5.5(25℃) 
New
Phosphate buffer solution

$22.00

Tris-HCl Buffered Saline 1 M,pH=7.5(25℃)
Tris-HCl Buffered Saline 1 M,pH=7.5(25℃)
1 M,pH=7.5(25℃) 
New
Tris-HCl Buffered Saline

$22.00

Phosphate buffer 0.02 M,pH=6.8(25℃)
Phosphate buffer 0.02 M,pH=6.8(25℃)
0.02 M,pH=6.8(25℃) 
New
Phosphate buffer

$22.00

Phosphate buffer solution 20 mM(含0.6 mol/L NaCl)
Phosphate buffer solution 20 mM(含0.6 mol/L NaCl)
20 mM(含0.6 mol/L NaCl) 
New
Phosphate buffer solution

$18.00

Phosphate buffer 10 mM,pH=7.0(25℃)(含0.1 M NaCl,1 mM EGTA,2 mM MgCl2)
Phosphate buffer 10 mM,pH=7.0(25℃)(含0.1 M NaCl,1 mM EGTA,2 mM MgCl2)
10 mM,pH=7.0(25℃)(含0.1 M NaCl,1 mM EGTA,2 mM MgCl2) 
New
Phosphate buffer

$37.00

10x Phosphate Buffered Saline 0.1 M,pH=6.8(25℃)
10x Phosphate Buffered Saline 0.1 M,pH=6.8(25℃)
0.1 M,pH=6.8(25℃) 
New
10x Phosphate Buffered Saline

$15.00

10x Phosphate Buffered Saline 0.1 M,pH=8.0(25℃)
10x Phosphate Buffered Saline 0.1 M,pH=8.0(25℃)
0.1 M,pH=8.0(25℃) 
New
10x Phosphate Buffered Saline

$15.00

sodium acetate buffer 0.4 M,pH=4.5(25 ℃)
sodium acetate buffer 0.4 M,pH=4.5(25 ℃)
0.4 M,pH=4.5(25 ℃) 
New
sodium acetate buffer

$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

$30.00

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

$11.00

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