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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

Sulfuric acid standard titration solution c(1/2H2SO4)=0.4940 mol/L
Sulfuric acid standard titration solution c(1/2H2SO4)=0.4940 mol/L
c(1/2H2SO4)=0.4940 mol/L 
New
Sulfuric acid standard titration solution

$15.00

Bromine standard titration solution c(1/2Br2)=0.02 mol/L
Bromine standard titration solution c(1/2Br2)=0.02 mol/L
c(1/2Br2)=0.02 mol/L 
New
Bromine standard titration solution

$25.00

Potassium brominate-potassium bromate standard solution c(1/2Br2)=0.5 mol/L
Potassium brominate-potassium bromate standard solution c(1/2Br2)=0.5 mol/L
c(1/2Br2)=0.5 mol/L 
New
Potassium brominate-potassium bromate standard solution

$30.00

Nitric acid standard titration solution c(HNO3)=0.063 mol/L
Nitric acid standard titration solution c(HNO3)=0.063 mol/L
c(HNO3)=0.063 mol/L 
New
Nitric acid standard titration solution

$15.00

Barium hydroxide standard titration solution c[Ba(OH)2]=0.005 mol/L
Barium hydroxide standard titration solution c[Ba(OH)2]=0.005 mol/L
c[Ba(OH)2]=0.005 mol/L 
New
Barium hydroxide standard titration solution

$15.00

Disodium ethylenediaminetetraacetate standard solution c(EDTA)=0.15 g/mL
Disodium ethylenediaminetetraacetate standard solution c(EDTA)=0.15 g/mL
c(EDTA)=0.15 g/mL 
New
Disodium ethylenediaminetetraacetate standard solution

$22.00

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

$22.00

Phosphate buffer c[(PO43)-]=0.008 mol/L
Phosphate buffer c[(PO43)-]=0.008 mol/L
c[(PO43)-]=0.008 mol/L 
New
Phosphate buffer

$22.00

Silver ion standard solution c(Ag+)=1 mg/mL
Silver ion standard solution c(Ag+)=1 mg/mL
c(Ag+)=1 mg/mL 
New
Silver ion standard solution

$22.00

Lead ion standard solution c(Pb2+)=100 μg/mL
Lead ion standard solution c(Pb2+)=100 μg/mL
c(Pb2+)=100 μg/mL 
New
Lead ion standard solution

$22.00

Lead standard solution c(Pb2+)=1.0 μg/mL
Lead standard solution c(Pb2+)=1.0 μg/mL
c(Pb2+)=1.0 μg/mL 
New
Lead standard solution

$22.00

Total iron standard solution 100 mg/L
Total iron standard solution 100 mg/L
100 mg/L 
New
Total iron standard solution

$15.00

Free residual chlorine standard solution 1 mg/L
Free residual chlorine standard solution 1 mg/L
1 mg/L 
New
Free residual chlorine standard solution

$15.00

Free residual chlorine standard solution 1000 μg/mL
Free residual chlorine standard solution 1000 μg/mL
1000 μg/mL 
New
Free residual chlorine standard solution

$45.00

Residual chlorine standard solution 2 mg/L
Residual chlorine standard solution 2 mg/L
2 mg/L 
New
Residual chlorine standard solution

$30.00

Potassium ferrocyanide standard solution c{K4[Fe(CN)6]}=50 μg/mL
Potassium ferrocyanide standard solution c{K4[Fe(CN)6]}=50 μg/mL
c{K4[Fe(CN)6]}=50 μg/mL 
New
Potassium ferrocyanide standard solution

$15.00

Chrome black T indicator liquid (C20H12N3NaO7S)=0.2%(wt)
Chrome black T indicator liquid (C20H12N3NaO7S)=0.2%(wt)
(C20H12N3NaO7S)=0.2%(wt) 
New
Chrome black T indicator liquid

$11.00

Methylene blue indicator solution c(C16H18N3ClS)=10 g/L
Methylene blue indicator solution c(C16H18N3ClS)=10 g/L
c(C16H18N3ClS)=10 g/L 
New
Methylene blue indicator solution

$22.00

Crystalline ammonium purple violet staining agent (C25H31N3)=0.1%(wt)
Crystalline ammonium purple violet staining agent (C25H31N3)=0.1%(wt)
(C25H31N3)=0.1%(wt) 
New
Crystalline ammonium purple violet staining agent

$18.00

Rose-red acid solution 1%
Rose-red acid solution 1%
1% 
New
Rose-red acid solution

$37.00

Bromocresol purple indicator solution c(C21H16Br2O5S)=0.05 g/L
Bromocresol purple indicator solution c(C21H16Br2O5S)=0.05 g/L
c(C21H16Br2O5S)=0.05 g/L 
New
Bromocresol purple indicator solution

$11.00

Methylrosanilinium Chloride Solution c(C24H28ClN3)=0.01 g/mL
Methylrosanilinium Chloride Solution c(C24H28ClN3)=0.01 g/mL
c(C24H28ClN3)=0.01 g/mL 
New
Methylrosanilinium Chloride Solution

$18.00

Methyl orange indicator solution (C14H14N3SO3Na)=0.001%(wt)
Methyl orange indicator solution (C14H14N3SO3Na)=0.001%(wt)
(C14H14N3SO3Na)=0.001%(wt) 
New
Methyl orange indicator solution

$15.00

Phenolphthalein indicator solution (C20H14O4)=1.6%(wt)
Phenolphthalein indicator solution (C20H14O4)=1.6%(wt)
(C20H14O4)=1.6%(wt) 
New
Phenolphthalein indicator solution

$15.00

Acetic acid-sodium acetate buffer solution 0.2 M,pH=4.0(25 ℃)
Acetic acid-sodium acetate buffer solution 0.2 M,pH=4.0(25 ℃)
0.2 M,pH=4.0(25 ℃) 
New
Acetic acid-sodium acetate buffer solution

$15.00

Tris hydrochloric acid buffer 0.05 mol/L,pH=7.0(25℃)
Tris hydrochloric acid buffer 0.05 mol/L,pH=7.0(25℃)
0.05 mol/L,pH=7.0(25℃) 
New
Tris hydrochloric acid buffer

$15.00

Phosphate buffer solution 10 mM,pH=7.2(25℃)(含0.6 mol/LNaCl)
Phosphate buffer solution 10 mM,pH=7.2(25℃)(含0.6 mol/LNaCl)
10 mM,pH=7.2(25℃)(含0.6 mol/LNaCl) 
New
Phosphate buffer solution

$25.00

Phosphate buffer solution 10 mM,pH=7.2(25 ℃)
Phosphate buffer solution 10 mM,pH=7.2(25 ℃)
10 mM,pH=7.2(25 ℃) 
New
Phosphate buffer solution

$22.00

pH standard buffer solution pH=10.21(25℃)
pH standard buffer solution pH=10.21(25℃)
pH=10.21(25℃) 
New
pH standard buffer solution

$22.00

Acetic acid-sodium acetate buffer solution 0.01 M,pH=5.5(25℃)
Acetic acid-sodium acetate buffer solution 0.01 M,pH=5.5(25℃)
0.01 M,pH=5.5(25℃) 
New
Acetic acid-sodium acetate buffer solution

$22.00

Acetic acid-sodium acetate buffer solution 0.01 M,pH=4.5(25℃)
Acetic acid-sodium acetate buffer solution 0.01 M,pH=4.5(25℃)
0.01 M,pH=4.5(25℃) 
New
Acetic acid-sodium acetate buffer solution

$22.00

Acetic acid-ammonium acetate buffer 0.1 M,pH=3.6(25℃)
Acetic acid-ammonium acetate buffer 0.1 M,pH=3.6(25℃)
0.1 M,pH=3.6(25℃) 
New
Acetic acid-ammonium acetate buffer

$15.00

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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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